Loved my Epicure EP-100's best sounding 2-way I've ever heard...8" woofer, tweeter brightness control on the rear....after 10 years, blew the tweeters but my Sansui 771 had a mic input and I was plugging my Fender Stratocaster in for years
Liked Infinity speakers back in the 80's. Was more of a Emit tweeter guy. The polycell tweeters didn't do it for me. Even had Kappa series speakers with Emits in my 86 Mustang. The ribbon tweets sounded super crispy and clean. Very bright and forward sounding. Ended up moving into ADS speakers for more smoothness and clarity.
I would be checking out the crossovers for electrolytic capacitors and testing them to see if they are still in spec. I'd also be looking at the hi and mid freq pots, giving them a squirt of lube-fader or at least giving them a twist back and forth to get rid of any oxidation.
Love this video! My first set of speakers were Infinity SM-115s that I bought at The Good Guys (remember them?) in 1995. Paired them with a Denon AVR from the same vintage and they rocked my dorm room and several apartments after that. I still have them and they are currently my garage speakers driven by a 70s Kenwood KR-2600 receiver that puts out like 15 watts of power. That’s all the Infinitys need. Those 15 watts will drive them loud enough for the entire neighborhood to hear. I think they sound great, and they can thump but the bass is sloppy. I will never get rid of them until the foam disintegrates. And even then I might re-foam them.
Back in the day, when I was going off to school, my dad sent me off with a Harmon Kardon receiver and a pair of Panasonic thrusters. It was great for my room size. Later I swapped the Panasonics for a pair of Pioneer three way boxes. From there I moved to the Sound Dynamics 10S, which for the late 80s was really a great sound. My big move in the early 90s was to the Definitive Technology BP10 B, which is IMO one of the best tower designs ever made. My son still runs them in his home and won’t give them up.
I have a pair of Infinity Column II's, bought new in 1977. The midrange driver is in its own internal enclosure. There are 2 piezo tweeters, one forward firing, one backward firing. The two 12" woofers, one firing forward, one down, seem powerful enough to lift these heavy tower speakers off of the ground. They are very efficient, fused, and rated for 15 to 250 watts of power. I chose these over a pair of JBL centuries, which were about the same price at the time, after several hours of listening tests - no regrets.
I saw the thumbnail and immediately thought they looked like my old SM-120s from High-School and college days. I actually had THREE of the SM-120s and used one for a "center Channel" running mixed-mono mode from an older Kenwood Receiver. I vaguely remember using both positive speaker outputs for the center. The cabinets were destroyed in a flood, so I rebuilt some cabinets out of Ply-Wood and they became my outdoor party speakers. I use Infinity Beta 50s in my Home theater now.
Yeah. They look like replacements. These videos are useless if they don't take the speakers apart and show us the guts. Any speaker with an aftermarket driver is more likely to have some alteration to the crossover. There is about a 95% chance something was done wrong.
First pair of hifi speakers were the SM125’s. Loved em! Recently bought a pair of Beta 50’s in mint condition. Found the matching cc and they sound amazing!
I have the RS6000 Infinity's I bought for $100. They were originally released in 1988 for $850 (today that's around $2400). I expected to just turn them around and sell them, but now they are my everyday speaker. Infinity nailed it IMHO, for my listening preference. Yes, a bit heavy on the bass, but I like that and with the ribbon tweeter, I can get a full range. I have Klipsch KG4's, I have Paradigm Studio 100's v3, I have Infinity Alpha 40's and several bookshelf speakers, but these Infinity's are awesome. Paired with my Arcam 250 and Technics MK1200 with a Vincent 700 Phono Amp, I couldn't be more happier with what I paid for. Also have the WiiM Ultra into a SMSL DL200 for streaming. Loud and clean. Metal, Classic, Country, Classical all sound good....Of course I could do better, but as a budget setup over my high end, it is my preference at home. Do more reviews on the older stuff, welcome to come to my home too :)
Still have my Infinity SM 152's with the 15" woofers. Also owned the 12" SM 125's and the bookshelf SM's, but sold when I moved out to California from Milwaukee. Still use the Infinity SM 152's in another media room and they still rock 30 years after purchasing them. Had to replace the woofer surrounds on both speakers and a couple of mid-range speakers from kids throwing balls through them, but everything still kicks and I still love the Polycell tweeters. Not as good as the old EMIT tweeters but still great for rock and metal. Infinity used to make really good speakers, home and automotive, and I love their sound signature. Upgraded my SM's in the mid to late 2000's to Infinity Beta fronts, center, and 4 surrounds with a second pair of front Infinity Classica's and 20 years later they're still magnificent. It's really too bad that Infinity got bought out and their high end speakers were discontinued. They had great speakers and sound!
Bought a pair of SM152s at a BX in Korea in 1992 while stationed there. I loved em, though not quite as much bas as you would expect from a pair of 15 inch woofers. Still mad the wife made me get rid of them
@@stephanieeakins2982 Then you didn't have them position correctly. Positioned for base, you will knock things off walls in other rooms. Or you weren't driving them with enough power. I still own a pair of 152s.
I bought a new pair of SM80s in 1990 ($210) and added a new pair of SM122s in 1993 ($900) and they are the only main and surround speakers I have had since. VERY efficient and loud with no distortion and I’ve had them at ear bleeding levels in the past. Still sound great with a couple of re-foams all around and a couple tweeters in the SM80s replaced with NOS tweeters over the years. They don’t get a lot of love out there but I’ve never been let down by them.
Thx for doing this review. My dad had a pair of these and gave them to me when I was in high school. I destroyed them playing Pantera on 11 12hrs a day. I wanted to buy a pair but couldn’t find the model anywhere. Now I know what they are !! Thx so much.
Had RS3 a or b. Awsome! Had to sell them as I moved together with my wife in a new apartment. Found a guy in Switzerland who bought and refurbished them properly.
These are all late 80s-90s vintage. This is from the post Arni Nudell era. The older ones are better, but this vintage is good. Andrew Jones was designing for them in the late 90s and put out some very good hard to find gems. I have picked up a lot of Infinity speakers in thrift shops for cheap needing refoaming
Try listening to the RS 2.5’s. I’ve had many speakers over the last 30 years, old and new. Don’t think I’ll ever let the Infinity’s go., love the channel. Cheers
My uncle is a huge fan of Infinity from that era. He has several pairs of different models. I know one pair he got where driver surrounds were toast and tears in cone material. He rebuilt the drivers and extended port length internally. I am not too sure of other mods but those are his favorite pair. Probably because of the personal work he put into them.
I had a pair of Infinity Quantum 2 speakers I bought when they came out in the late 70s. GREAT speakers. They each had a 12" Infinity Dual-Drive Woofer, a 4" mid-bass coupler, 2 1.5" dome midranges, and 3 EMIT tweeters. Frequency response from 24 HZ - 32 kHZ +- 3 DB, 4 Ohms. 49" tall. I had them for about 25 years, until the woofer surrounds fell apart. Drove them with a pair of GAS Son of Ampzilla amps (bi-amped). Bought the speakers and amps thru the US Army audio-photo store in Germany when I was stationed there, so I saved about 30% over normal retail. That was my dream system, but nothing lasts forever. The amps eventually died as well. Oh well... Infinity made some amazing speakers. I had a question about hooking up the GAS amps to the speakers, so I wrote to Infinity, and Arne Nudell answered personally! Blew me away...
If you still have those excellent Quantum 2s, you may want to contact Watkins Engineering. They can rebuild the Infinity Watkins Dual-Drive woofers, but you'll need to remove and ship them to Watkins Engineering. Those great speakers are worth the effort!
Bought a pair of SM 112's in '93 as part of my first stereo, along with a Yamaha receiver, CD player, and dual cassette deck. $1200 in '93 = about $2600 today. Still have all the pieces; all but the cassette deck still work and get regular use. Although I have collected a modest, but very nice group of vintage gear in good shape, I could easily live with that original system no problem. It still sounds good and it got me off to a great start in the hobby. The only thing I have done to any of the pieces is to replace the bulb in the display on the receiver after a couple of years, a 10 minute job. That's it. Haven't even had to refoam the speakers yet. These days the gear consists of a McIntosh MA 5100, Marantz 2285b w/ WC22, Sansui 8080DB, Yamaha CR-1020, Onkyo A7, and a couple of T9's, Pioneer SA 9100, Technics SL 1600, series 1 Klipsch Cornwalls, among others. As good as all that sounds, which is fantastic, that original system doesn't pale by comparison. Those SM112's were 20 years old before I got the itch to upgrade. They also play nicely with any amp/receiver you power them with. No need to contend with the magic/curse of component synergy. Yes, the mids and woofers in the 112's in the video are not original and the trim rings are missing. The 125's look to be in pretty good shape. If a person needs a pair of speakers, you could do way, way worse than these, even if they need foam and a recap, as those are easy and inexpensive fixes that you can use as a gateway to the DIY side of the hobby. Rock on everybody, thanks cheapaudioman.
had a pair of SM120's. drove them with a 2ch Carver m1.5t that had crazy headroom and would drive them to insane levels for short periods of time. they were just fun, and sounded pretty damn good too.
My first "decent" speakers were a pair of SM120s that I got at the AAFES BX in Babbenhausen, Germany back in the 80's. I've moved on to horns since then, but I'll always have a special fondness for the Infinity SM line.
Listening to my SM112 now! Purchased in early 80’s. Had the woofers refoamed by Midwest Speaker Repair in Minneapolis last year. I also have Infinity center channel and Infinity wooden bookshelf speakers for my rear surround speakers. Like to find an original Infinity sub woofer to round out my 5.1 set up. Great old vintage still sounding great for my old ears!
There was a time when I couldn't stop thinking at all. Not now. In silence I can hear the sound of air that's not there. No thoughts involvement....you can't stay there. You can go there.🙏🏻
I still have a my SM 152s I bought when I was 15 (brand new) and I have a couple of bookshelf versions SM 65 and SM 85. The 152s have 15" woofers, 2 mids, and the single polycell. They are not the most efficient speakers, but if powered they will rock... The initial ones were real wood, these you're looking at are second generation and are particle board.
The SM series was after Harmon Corp. bought Infinity. The las of the OG Infinities were the Kappa. They are on another level beyond JBL, Klipsch, etc. I have Kappa 8.1 sii, 6.1 sii, 5,1 sii, RSM's and have resorted many Infinities.....It's a West Coast thing....Randy, grab some of the OG Kappas while they are still available. They are on another level.
Other than being plagued with polydome rot, the Kappas are incredible speakers and worth the money. .The 6,7 and 8 models are fairly reasonable but the 9 series are pushing 2500 to 3000 because of the rarity of good condition units available. If I am correct the 9's had a reputation of being amp killers because they dipped well below 4ohms on peaks IMO Harman did a great job of taking the top end Infinity technology and brought it down their line but simultaneously got away from continuing to push the limits of high end. As a result Infinity just became a name recognition marketing tool and not the storied manufacturer it started as.
Being born in the early 80s, i didn't experience the high points of Infinity, but even towards the end of their home audio production and deep into the Kardon group ownership, they were still great speakers. I have a pair of Alpha 20s i bought new in the early 00s and they are wonderful bookshelf speakers. I frequently cruise Craigslist for old Infinitys and the SM series frequently turns up at very reasonable prices.
I have a pair of Infinity Kappa 8 paired to a Audio Research SP9 MKII preamp and a Harmon Kardon Citation 16A power amp. I love it my Neghibor across the street yelled at me "Trun Up The Music" he must like Thin Lizzy as much as I do.
I picked up a set of SM-125 in near perfect condition for $80 in an ebay auction. The secret is to sort nearest to farthest. My distance was 10 miles. II was the first bid at $80, with my high bid set to $200. I think the $250 shipping cost scared all others away, causing me to be the only bidder.
A good set of speakers will last you a lifetime. I have some Sansui Sp-27 Still have. Probably my age. Got new Whalfedales now which are very good. But will keep the Sansui. Nice post.
I had a set for surround sound I bought in the late 90's. SM155,SM65, and SM Center. I had them paired with a Pioneer VSX-906. The one with the mosfett and they rocked the house. Ended up going to bookshelf sub combo for surround and kept the SM155 in the weight room. I got rid of them a few years ago since they took up far too much space and I put some Polk TSi100 and a Polk 10" powered sub to replace them. I do miss them though. You just can't beat the sound that comes out of a large floor standing speaker. And when you want to listen to some loud rock and roll, you can't beat a pair of Infinity SMs.
Oh man... I will always find room in my house for my stereo gear. I like Polk but I never liked their subwoofers. I could never understand why they couldn't pull of a decent sub. But your right. A little bookshelf speaker can't do what a big ol boy of a floor stander can do even though they have gotten a lot closer.
I have the SM 155s, I can vouch for the 70s receiver claim. I use a Harman Kardon HK 505 integrated amp powering them and it sounds great and will get beyond loud. It’s the closest thing to Rock Concert in your living room I’ve ever experienced. They’re crazy efficient. 60 watts will split molecules
I found a pair of Infinity Qe studio monitors a few years ago still with their original box and all packing and papers, paid around $150 for them, the Emit tweeters are interesting and as reviewed, they're good speakers, especially for what I paid.
Back when I was a younger man, I ended up with a pair of SM100 since they were the only thing I could afford . I wanted the SM150 with those giant 15" woofers, but those had to wait. I ended up getting them, but was only able to buy them one at a time. Still have both pairs to this day. Those SM112 woofers were re-coned, if they are even Infinity drivers...same as the mids. They should look exactly like the SM125's. Over time the foam surround dries out and ends up disintegrating if you decide to try and use them...even if you took fairly decent care of them...ask me how I know :) This series, well the original versions, were initially available as SM80, SM100, SM120 and SM150 denoting the size of the woofer. The SM80 were the only bookshelf, all others were floor standers. Infinity came out with the Kappa series which got rave review, but I hated them due to their excess mid-range...to my ears.
When I was just a little awkward strange teenage boy in the 90's I use to drool over the Infinity speakers at Service Merchandise and Silo's. I felt they were like a step or two above Cerwin Vega in my opinion. By the time I was working though I had got a job part time at a much higher end store. They dealt with brands such as Polk, Kef, Definitive Tech, Velodyne, Adcom, Mac, and so forth and I was buying that kind of stuff used. We didn't carry Infinity but someone wanted to use a pair as trade in and I told the sales guys I would buy them if they took them in. Mine had a 15 inch woofer and were just like that 2nd pair you showed us. Them speakers took so much abuse and lived through a 16 year old boy blasting Master of the Puppets on 11.
I wasn't a huge fan of that model in that series, but I had a set of the book shelfs SM 65's they were still are awesome. I noticed that yours is missing the port. I loved the smoothnes of the treble. They seriously rocked the house.
I found a set about that size and I had to replace the woofers and the mids in them. They originally had the plastic/vynil midranges and woofer with the foam crap surounde. They also have the Emit tweeters that sound surprisingly good still. The replacement speakers sounded better than the originals did. I paid 40 bucks for them probably 20 years ago knowing they were hurt because I also knew how good they were. I had a buddy who owned a raw speaker shop so I knew we'd find something that would be as good or better than the factory ones. I use them for the rear channels because I have a 8 inch 3 way set I built in the early 80s and have loved since. Soft dome midranges and tweeters, and Gefco long throw rubber suround woofers. I also have a decent cheap powered sub😁
The SM series came after Sid Harmon aquired the company, 1984 or so. Arnie Nudell frowned on the SM series but it was a profit center for the company. Arnie was right, the polycell tweeter is nothing compared to Arnies EMIT design, but emit was expensive to manufacture.
@@crimlarksSteve Fantastic, yes, but hard to manufacture & could not handle volumes of power. They worked well for Arnie's line source designs which were superb.
I'm still using my '94 mint SM-125s in rotation, still getting too loud too easily. Will never forget the dancing gal in a pink mini-skirt on the front of the sales brochure that had absolutely nothing to do with me buying them. Nothing has degraded. I refoamed the surrounds on my small bookshelf '94 RS-125s and they sound beautiful with a sub. Cabinets are on the RS-125s are thicker than a snicker.
The RS3, RSa, C3007, and Kappas with the Emit tweeter are the series to go for. These poly dome tweeters actually disintegrate cause theyre foam. Im very familiar and theres a reason the online consensus is these arent sought after. But if they sound good to you have fun until you to have to replace that tweeter foam lol
In 95’ I bought my first decent pair of speakers. They were Infinity speakers from Circuit City. I replaced them a couple years later with Polk and almost immediately missed those Infinity’s.
I had the little brother of these, the SM-110s. The tweeters are stupid delicate, and if you get a set with intact tweeters, get some kind of fusing system on the tweeters. But they do sound good.
There's a lot of great speakers from 70's and 80's too if you can find them. Advents, Dalquist, Infinitys and Klipsch legacy speakers. And some others too.
Those only part infinity, they have mixed replacement drivers, Infinity's version of Cerwin Vega party speakers. The woofers and Midrange are replaced with who knows what !
Awesome video.... THanks !i'd love to see a comparison between those vintage speakers up against the latest and greatest of today... in fact, generate some ULTRA HD audio of various sorts on UDIO and use that copyright free music to do an A-B comparison hanging off your A10 Classic !
@robertbynon7189 I agree 👍 they used high quality crossover components, built there own drivers, used butyl rubber surround and was one of the first companies to use a computer crossover simulator. I found a pair of ads 2 way with a 10" woofer for $75 at a thrift shop near me and I slept on them because I am a diy speaker builder and I have more than I need. But the next day I wanted to buy and use as something to reference to and they were gone. Someone got a great deal. They were built in the town I live in. Not that it has to do with anything. I just think they were some of the best speakers of that time and still can out perform most speakers out there.
Polycell tweeters were used on several models, and sounded amazing. All of the top end models of Infinity speakers used EMIT tweeters and EMIM midranges since the 70's. Polycell tweeters were used on all of the lower end models, but sounded just as good in many ways as the ribbons. The SM models were in the 'Studio Monitor' series of speakers. Specifications were: 3 way, 3 driver loudspeaker system. Frequency Response: 32Hz to 27kHz. Recommended Amplifier: 10 to 200W. Crossover Frequencies: 750, 5500Hz. Impedance: 8Ω. Sensitivity: 100dB. Hell of a bargain finding them in this condition for that price. SM 112's were identical in terms of sensitivity and impedance, but their frequency range was 59Hz - 25kHz, and they had a higher crossover point between the woofer and midrange.
Love watching your stuff, have for a while. Just wanted to chime in on these seeing as how I have collected numerous pairs of SM line Infinity speakers. Including SM-150, SM-112, SM-120, SM-122, SM-65, among others. My current set are SM-150 mint condition with original cardboard boxes, love them with some upgrades. What I wanted to say was, those drivers are wrong. They should have the Polycell High Output tweeter. But the Midrange and woofer are not original to those speakers. They should have a poly coated (shiny) black driver. Black and gold trim rings, with a typical foam surround on both. Infinity logo on the dust cap of the woofer. Happy hunting, you should aquire the originals. They sound much better I'd assume. Look into some internal cabinet bracing, poly fill on the inside, standoffs for the bottom and binding posts for the back. The SM-125's there look to be correct!
I have infinity beta 50. Set with my denon, using audyssey, they sounded very good the last time i used them. From my memory they sounded better than my JBL studio 580 but because i finally got the JBL where i like them, i haven't changed them back. I do remember the biggest weakness on the infinity beta 50s, are the bass was a bit muddy in my small room. If you don't have room correction don't even bother with them, though. They have shreeking upper mids if they aren't room corrected.
H/K receivers of that era had the best amp sections of any mainstream receivers. I had a 435. Very strong, high-current amplifiers. A 75 WPC rating was comparable to 130 WPC from most others. The 7550HD had two power supplies, one for the front L/R and one for the other 5 channels so you could properly bi-amp the fronts if you wanted to. A few other brands did the same with their top-tier avr's back in the day as well. As for Infinity speakers, I'll take the Danish produced Infinity Kappa 200, 400 or 600 ($$$) or the more common IL series over SM's. 🙂
When I was a little kid, maybe 10 years old, I remember my uncle was really into hifi and had the original JBL L100s. I have a picture of them in the background in his apartment. I wonder if he even still has them and if they are worth restoring.
Yeah, those mids and bass driver are replacements. Infinity sm-122, Birthday present 92-93. I think parents bought them for $225-250 at either Cicuit City or similar stere. Still in great shape minus the surrounds on the 10"woofers. I do remember the bass was lacking and tweeter control having no real effect. One of these day's I will refoam and try a few mods to improve them. I am in no hurry though.
all twelve possible combinations of a pair of the four speakers, taking in account they all sound different ( and so the panoramization and frequency responses of both the room and your ears) 1 left 2right 1 left 3 right 1 left 4 right 2 left 1 right 2 left 3 right 2 left 4 right 3 left 1 right 3 left 2 right 3 left 4 right 4 left 1 right 4 left 2 right 4 left 3 right
Infinity hadda swell line of speakers in the later 1970's. Models Qe, Qa, Qb and the big boys like the Reference Standard ll. Good sound for the money. Employing their EMIT tweeters. A friend had the Qb's powered by a Pioneer SX-850 and they could get loud and stay clean-n-clear. Very impressive systems. Your SM-125's are from late 1990's. As long as you like'em, that's what counts.
I own a pair of SM-112 that i enjoy on a daily basis in my home office hooked up to my 90's Denon PMA-915R integrated amplifier, and streaming from Spotify on my PC by way of the SMSL SU-1 dac. The original 10" woofer and 4.5" midrange on your son-in-law's SM-112's have been replaced with some off-brand inferior products for sure. The factory midrange would look identical to the one on the SM-125 he has, and the woofer would look identical to that SM-125 12" woofer as well, but the 10" version.
Oh man... I had a nice set of Infinity back in the day... they were so 'solid' in the tone... fit my room perfect. Seems I had a automotive infinity that were great as well. My jems are Klipsch KG-4 , Bose 301 Series II, and Mission (bookshelf speaker) from England. The Bose 301 do not work for my current room, but I've had them tuned into a space properly and love the tones and surprised by the load they could take... coupled them with the Klipsch KG-4 in one perfect space. *Note foam replaced - source from "Nashville speaker guy" -- mostly powered by Marantz 2285B. Looking at your channel for another amp head (Marantz tubes and lights replaced, but the input channels have decayed). Memories.... I swear a buddy let me borrow these for a while. Infinity had some great cones... really solid tone on the ones I've enjoyed. Good share !
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
I still have my 1976 Harmon Kardon 430 twin powered receiver with Epicure 10 speakers. It still sounds great to this day.
Loved my Epicure EP-100's best sounding 2-way I've ever heard...8" woofer, tweeter brightness control on the rear....after 10 years, blew the tweeters but my Sansui 771 had a mic input and I was plugging my Fender Stratocaster in for years
Love my HK 430 twin too.
Proud owner of 430 and 730 ,😂both recapped
Man been on the hifi crazy train since late 60's, AR, JBL, Advent, CV, RTR, KLH, Infinity all sweet treats. Nice to see still appreciated,
Liked Infinity speakers back in the 80's. Was more of a Emit tweeter guy. The polycell tweeters didn't do it for me. Even had Kappa series speakers with Emits in my 86 Mustang. The ribbon tweets sounded super crispy and clean. Very bright and forward sounding. Ended up moving into ADS speakers for more smoothness and clarity.
I would be checking out the crossovers for electrolytic capacitors and testing them to see if they are still in spec. I'd also be looking at the hi and mid freq pots, giving them a squirt of lube-fader or at least giving them a twist back and forth to get rid of any oxidation.
Or figure the value and just replace them with a resistor. Hell, redo the whole crossover.
I would throw them away...
@@marcodevos3565 It is not a difficult job with some research and learning for the novice - oh - and a decent soldering iron and quality solder.
You just made some people very happy. Many of these have been on the market forever.
It was great to see some vintage equipment. Also fun to see what normal people use for their stereo systems.!
Normal people? You mean other than audiophiles?
Love this video! My first set of speakers were Infinity SM-115s that I bought at The Good Guys (remember them?) in 1995. Paired them with a Denon AVR from the same vintage and they rocked my dorm room and several apartments after that. I still have them and they are currently my garage speakers driven by a 70s Kenwood KR-2600 receiver that puts out like 15 watts of power. That’s all the Infinitys need. Those 15 watts will drive them loud enough for the entire neighborhood to hear. I think they sound great, and they can thump but the bass is sloppy. I will never get rid of them until the foam disintegrates. And even then I might re-foam them.
I bought a pair of SM 112s sometime around 1986. Paired with a Carver M 500t amp. Loved the combination. Still have the Carver.
Do more vintage gear shows! WE LUV THIS.
I had a pair of SM150s back in the mid eighties. These things were amazing.
Back in the day, when I was going off to school, my dad sent me off with a Harmon Kardon receiver and a pair of Panasonic thrusters. It was great for my room size. Later I swapped the Panasonics for a pair of Pioneer three way boxes. From there I moved to the Sound Dynamics 10S, which for the late 80s was really a great sound. My big move in the early 90s was to the Definitive Technology BP10 B, which is IMO one of the best tower designs ever made. My son still runs them in his home and won’t give them up.
My Hifi journey started in 1985 when I bought some Infinity RS10 bookshelf speakers. I have very fond memories of them.
I have a pair of Infinity Column II's, bought new in 1977. The midrange driver is in its own internal enclosure. There are 2 piezo tweeters, one forward firing, one backward firing. The two 12" woofers, one firing forward, one down, seem powerful enough to lift these heavy tower speakers off of the ground. They are very efficient, fused, and rated for 15 to 250 watts of power. I chose these over a pair of JBL centuries, which were about the same price at the time, after several hours of listening tests - no regrets.
I have the same. Great speakers!
Almost all of my speakers, including my home theater are Infinity. Ive been in love with the brand since I was a teenager in the 90s.
I bought a pair of these for my parents when they first came out....mum still has them and listens to them everyday....mine is in much better shape
I saw the thumbnail and immediately thought they looked like my old SM-120s from High-School and college days. I actually had THREE of the SM-120s and used one for a "center Channel" running mixed-mono mode from an older Kenwood Receiver. I vaguely remember using both positive speaker outputs for the center. The cabinets were destroyed in a flood, so I rebuilt some cabinets out of Ply-Wood and they became my outdoor party speakers. I use Infinity Beta 50s in my Home theater now.
The mids and wofers in the sm 112 speakers aren't original
I was thinking the same thing
Yeah. They look like replacements. These videos are useless if they don't take the speakers apart and show us the guts. Any speaker with an aftermarket driver is more likely to have some alteration to the crossover. There is about a 95% chance something was done wrong.
Definitely replacements.
Not to mention some are asking for $3000 for a 50 watt speaker, forget about it !
@@davidkornegay1813 Correct. They are not original and the beauty rings are missing.
First pair of hifi speakers were the SM125’s. Loved em! Recently bought a pair of Beta 50’s in mint condition. Found the matching cc and they sound amazing!
I have the RS6000 Infinity's I bought for $100. They were originally released in 1988 for $850 (today that's around $2400). I expected to just turn them around and sell them, but now they are my everyday speaker. Infinity nailed it IMHO, for my listening preference. Yes, a bit heavy on the bass, but I like that and with the ribbon tweeter, I can get a full range. I have Klipsch KG4's, I have Paradigm Studio 100's v3, I have Infinity Alpha 40's and several bookshelf speakers, but these Infinity's are awesome. Paired with my Arcam 250 and Technics MK1200 with a Vincent 700 Phono Amp, I couldn't be more happier with what I paid for. Also have the WiiM Ultra into a SMSL DL200 for streaming. Loud and clean. Metal, Classic, Country, Classical all sound good....Of course I could do better, but as a budget setup over my high end, it is my preference at home. Do more reviews on the older stuff, welcome to come to my home too :)
Still have my Infinity SM 152's with the 15" woofers. Also owned the 12" SM 125's and the bookshelf SM's, but sold when I moved out to California from Milwaukee. Still use the Infinity SM 152's in another media room and they still rock 30 years after purchasing them. Had to replace the woofer surrounds on both speakers and a couple of mid-range speakers from kids throwing balls through them, but everything still kicks and I still love the Polycell tweeters. Not as good as the old EMIT tweeters but still great for rock and metal. Infinity used to make really good speakers, home and automotive, and I love their sound signature. Upgraded my SM's in the mid to late 2000's to Infinity Beta fronts, center, and 4 surrounds with a second pair of front Infinity Classica's and 20 years later they're still magnificent. It's really too bad that Infinity got bought out and their high end speakers were discontinued. They had great speakers and sound!
I had a pair of the Infinity SM152s with the 15-in woofers...😂 Back in the '80s.
Bought a pair of SM152s at a BX in Korea in 1992 while stationed there. I loved em, though not quite as much bas as you would expect from a pair of 15 inch woofers. Still mad the wife made me get rid of them
@@stephanieeakins2982 Then you didn't have them position correctly. Positioned for base, you will knock things off walls in other rooms. Or you weren't driving them with enough power. I still own a pair of 152s.
Back in the 1980s, I aspired to afford the Infinity Kappa 9 in ROSEWOOD, and now own a pair of Kappa 8's. Incredible speakers!
I bought a new pair of SM80s in 1990 ($210) and added a new pair of SM122s in 1993 ($900) and they are the only main and surround speakers I have had since. VERY efficient and loud with no distortion and I’ve had them at ear bleeding levels in the past. Still sound great with a couple of re-foams all around and a couple tweeters in the SM80s replaced with NOS tweeters over the years. They don’t get a lot of love out there but I’ve never been let down by them.
Thx for doing this review. My dad had a pair of these and gave them to me when I was in high school. I destroyed them playing Pantera on 11 12hrs a day. I wanted to buy a pair but couldn’t find the model anywhere. Now I know what they are !! Thx so much.
I used to have those infinity speakers in 1986. As far as I remember they were efficient but very V curved sounding.
Who better to help you set up a system than Randy himself. Love that you are enjoying your time with your family.
Love my SM-120's. I did a mod on mine adding internal braces to reign in some of the boominess.
In 93 I got 2 6.5" 2way bookshelf speakers at Circuit City and absolutely loved em! But I had subs so combined they were excellent!
Had RS3 a or b. Awsome! Had to sell them as I moved together with my wife in a new apartment. Found a guy in Switzerland who bought and refurbished them properly.
These are all late 80s-90s vintage. This is from the post Arni Nudell era. The older ones are better, but this vintage is good. Andrew Jones was designing for them in the late 90s and put out some very good hard to find gems. I have picked up a lot of Infinity speakers in thrift shops for cheap needing refoaming
My Kappa 8.1 from late 90s are still my go too. I may rotate is various others on occasion but always find myself back to my 8.1's
Try listening to the RS 2.5’s. I’ve had many speakers over the last 30 years, old and new. Don’t think I’ll ever let the Infinity’s go., love the channel. Cheers
My uncle is a huge fan of Infinity from that era. He has several pairs of different models. I know one pair he got where driver surrounds were toast and tears in cone material. He rebuilt the drivers and extended port length internally. I am not too sure of other mods but those are his favorite pair. Probably because of the personal work he put into them.
I had a pair of Infinity Quantum 2 speakers I bought when they came out in the late 70s. GREAT speakers. They each had a 12" Infinity Dual-Drive Woofer, a 4" mid-bass coupler, 2 1.5" dome midranges, and 3 EMIT tweeters. Frequency response from 24 HZ - 32 kHZ +- 3 DB, 4 Ohms. 49" tall. I had them for about 25 years, until the woofer surrounds fell apart. Drove them with a pair of GAS Son of Ampzilla amps (bi-amped). Bought the speakers and amps thru the US Army audio-photo store in Germany when I was stationed there, so I saved about 30% over normal retail. That was my dream system, but nothing lasts forever. The amps eventually died as well. Oh well... Infinity made some amazing speakers. I had a question about hooking up the GAS amps to the speakers, so I wrote to Infinity, and Arne Nudell answered personally! Blew me away...
If you still have those excellent Quantum 2s, you may want to contact Watkins Engineering. They can rebuild the Infinity Watkins Dual-Drive woofers, but you'll need to remove and ship them to Watkins Engineering. Those great speakers are worth the effort!
Bought a pair of SM 112's in '93 as part of my first stereo, along with a Yamaha receiver, CD player, and dual cassette deck. $1200 in '93 = about $2600 today. Still have all the pieces; all but the cassette deck still work and get regular use. Although I have collected a modest, but very nice group of vintage gear in good shape, I could easily live with that original system no problem. It still sounds good and it got me off to a great start in the hobby.
The only thing I have done to any of the pieces is to replace the bulb in the display on the receiver after a couple of years, a 10 minute job. That's it. Haven't even had to refoam the speakers yet.
These days the gear consists of a McIntosh MA 5100, Marantz 2285b w/ WC22, Sansui 8080DB, Yamaha CR-1020, Onkyo A7, and a couple of T9's, Pioneer SA 9100, Technics SL 1600, series 1 Klipsch Cornwalls, among others. As good as all that sounds, which is fantastic, that original system doesn't pale by comparison. Those SM112's were 20 years old before I got the itch to upgrade. They also play nicely with any amp/receiver you power them with. No need to contend with the magic/curse of component synergy.
Yes, the mids and woofers in the 112's in the video are not original and the trim rings are missing. The 125's look to be in pretty good shape. If a person needs a pair of speakers, you could do way, way worse than these, even if they need foam and a recap, as those are easy and inexpensive fixes that you can use as a gateway to the DIY side of the hobby.
Rock on everybody, thanks cheapaudioman.
Really enjoyed this content. I’d love to see more videos exploring other peoples home systems.
Keep in mind the speakers sensitivity is around 102 db, you could power these speakers with anything. They are vinyl over mdf.
had a pair of SM120's. drove them with a 2ch Carver m1.5t that had crazy headroom and would drive them to insane levels for short periods of time. they were just fun, and sounded pretty damn good too.
I'm an Indiana kid. Love all the Colts swag.
My first "decent" speakers were a pair of SM120s that I got at the AAFES BX in Babbenhausen, Germany back in the 80's. I've moved on to horns since then, but I'll always have a special fondness for the Infinity SM line.
Listening to my SM112 now! Purchased in early 80’s. Had the woofers refoamed by Midwest Speaker Repair in Minneapolis last year. I also have Infinity center channel and Infinity wooden bookshelf speakers for my rear surround speakers. Like to find an original Infinity sub woofer to round out my 5.1 set up. Great old vintage still sounding great for my old ears!
There was a time when I couldn't stop thinking at all.
Not now. In silence I can hear the sound of air that's not there. No thoughts involvement....you can't stay there. You can go there.🙏🏻
I still have a my SM 152s I bought when I was 15 (brand new) and I have a couple of bookshelf versions SM 65 and SM 85. The 152s have 15" woofers, 2 mids, and the single polycell. They are not the most efficient speakers, but if powered they will rock...
The initial ones were real wood, these you're looking at are second generation and are particle board.
Still rocking mine 35 years after buying them.
The SM series was after Harmon Corp. bought Infinity. The las of the OG Infinities were the Kappa. They are on another level beyond JBL, Klipsch, etc. I have Kappa 8.1 sii, 6.1 sii, 5,1 sii, RSM's and have resorted many Infinities.....It's a West Coast thing....Randy, grab some of the OG Kappas while they are still available. They are on another level.
This man speaks the truth!
Other than being plagued with polydome rot, the Kappas are incredible speakers and worth the money. .The 6,7 and 8 models are fairly reasonable but the 9 series are pushing 2500 to 3000 because of the rarity of good condition units available. If I am correct the 9's had a reputation of being amp killers because they dipped well below 4ohms on peaks IMO Harman did a great job of taking the top end Infinity technology and brought it down their line but simultaneously got away from continuing to push the limits of high end. As a result Infinity just became a name recognition marketing tool and not the storied manufacturer it started as.
Infinity Qb, Qa, Qe. Also exceptional speakers.
I had a pair of these in the 80’s when I was in college. They were the two way version and they rocked. My neighbors hated me😂
Being born in the early 80s, i didn't experience the high points of Infinity, but even towards the end of their home audio production and deep into the Kardon group ownership, they were still great speakers. I have a pair of Alpha 20s i bought new in the early 00s and they are wonderful bookshelf speakers. I frequently cruise Craigslist for old Infinitys and the SM series frequently turns up at very reasonable prices.
I have a pair of Infinity Kappa 8 paired to a Audio Research SP9 MKII preamp and a Harmon Kardon Citation 16A power amp. I love it my Neghibor across the street yelled at me "Trun Up The Music" he must like Thin Lizzy as much as I do.
Ahhhh.....I still have my sm-152's that I bought in '91. Still rocking!
I picked up a set of SM-125 in near perfect condition for $80 in an ebay auction. The secret is to sort nearest to farthest. My distance was 10 miles. II was the first bid at $80, with my high bid set to $200. I think the $250 shipping cost scared all others away, causing me to be the only bidder.
I have the infinity SM-152s , and I can say they are great sounding speakers. A little bass heavy with the 15" woofers, but I like that.
A good set of speakers will last you a lifetime. I have some Sansui Sp-27 Still have. Probably my age. Got new Whalfedales now which are very good. But will keep the Sansui. Nice post.
I had a set for surround sound I bought in the late 90's. SM155,SM65, and SM Center. I had them paired with a Pioneer VSX-906. The one with the mosfett and they rocked the house. Ended up going to bookshelf sub combo for surround and kept the SM155 in the weight room. I got rid of them a few years ago since they took up far too much space and I put some Polk TSi100 and a Polk 10" powered sub to replace them. I do miss them though. You just can't beat the sound that comes out of a large floor standing speaker. And when you want to listen to some loud rock and roll, you can't beat a pair of Infinity SMs.
Oh man... I will always find room in my house for my stereo gear. I like Polk but I never liked their subwoofers. I could never understand why they couldn't pull of a decent sub. But your right. A little bookshelf speaker can't do what a big ol boy of a floor stander can do even though they have gotten a lot closer.
That was a lot of fun thanks CAM!looking forward to how this may end up.
I'm a fan on Infinity. All my cars have always had Infinity Coaxials.
I have the SM 155s, I can vouch for the 70s receiver claim. I use a Harman Kardon HK 505 integrated amp powering them and it sounds great and will get beyond loud. It’s the closest thing to Rock Concert in your living room I’ve ever experienced. They’re crazy efficient. 60 watts will split molecules
I found a pair of Infinity Qe studio monitors a few years ago still with their original box and all packing and papers, paid around $150 for them, the Emit tweeters are interesting and as reviewed, they're good speakers, especially for what I paid.
Back when I was a younger man, I ended up with a pair of SM100 since they were the only thing I could afford . I wanted the SM150 with those giant 15" woofers, but those had to wait. I ended up getting them, but was only able to buy them one at a time. Still have both pairs to this day.
Those SM112 woofers were re-coned, if they are even Infinity drivers...same as the mids. They should look exactly like the SM125's. Over time the foam surround dries out and ends up disintegrating if you decide to try and use them...even if you took fairly decent care of them...ask me how I know :)
This series, well the original versions, were initially available as SM80, SM100, SM120 and SM150 denoting the size of the woofer. The SM80 were the only bookshelf, all others were floor standers. Infinity came out with the Kappa series which got rave review, but I hated them due to their excess mid-range...to my ears.
When I was just a little awkward strange teenage boy in the 90's I use to drool over the Infinity speakers at Service Merchandise and Silo's. I felt they were like a step or two above Cerwin Vega in my opinion. By the time I was working though I had got a job part time at a much higher end store. They dealt with brands such as Polk, Kef, Definitive Tech, Velodyne, Adcom, Mac, and so forth and I was buying that kind of stuff used. We didn't carry Infinity but someone wanted to use a pair as trade in and I told the sales guys I would buy them if they took them in. Mine had a 15 inch woofer and were just like that 2nd pair you showed us. Them speakers took so much abuse and lived through a 16 year old boy blasting Master of the Puppets on 11.
I wasn't a huge fan of that model in that series, but I had a set of the book shelfs SM 65's they were still are awesome. I noticed that yours is missing the port. I loved the smoothnes of the treble. They seriously rocked the house.
I found a set about that size and I had to replace the woofers and the mids in them. They originally had the plastic/vynil midranges and woofer with the foam crap surounde. They also have the Emit tweeters that sound surprisingly good still. The replacement speakers sounded better than the originals did. I paid 40 bucks for them probably 20 years ago knowing they were hurt because I also knew how good they were. I had a buddy who owned a raw speaker shop so I knew we'd find something that would be as good or better than the factory ones. I use them for the rear channels because I have a 8 inch 3 way set I built in the early 80s and have loved since. Soft dome midranges and tweeters, and Gefco long throw rubber suround woofers. I also have a decent cheap powered sub😁
The SM series came after Sid Harmon aquired the company, 1984 or so. Arnie Nudell frowned on the SM series but it was a profit center for the company. Arnie was right, the polycell tweeter is nothing compared to Arnies EMIT design, but emit was expensive to manufacture.
EMITs were fantastic
@@crimlarksSteve Fantastic, yes, but hard to manufacture & could not handle volumes of power. They worked well for Arnie's line source designs which were superb.
I'm still using my '94 mint SM-125s in rotation, still getting too loud too easily. Will never forget the dancing gal in a pink mini-skirt on the front of the sales brochure that had absolutely nothing to do with me buying them. Nothing has degraded. I refoamed the surrounds on my small bookshelf '94 RS-125s and they sound beautiful with a sub. Cabinets are on the RS-125s are thicker than a snicker.
The RS3, RSa, C3007, and Kappas with the Emit tweeter are the series to go for. These poly dome tweeters actually disintegrate cause theyre foam. Im very familiar and theres a reason the online consensus is these arent sought after.
But if they sound good to you have fun until you to have to replace that tweeter foam lol
I recall Infinity made highly regarded speakers for car audio back in the 80s!
In 95’ I bought my first decent pair of speakers. They were Infinity speakers from Circuit City. I replaced them a couple years later with Polk and almost immediately missed those Infinity’s.
Love those Infinity polycell tweeters! They're excellent. Tried desperately to acquire some nice Infinity speakers in 2024 and failed miserably.
I had the little brother of these, the SM-110s. The tweeters are stupid delicate, and if you get a set with intact tweeters, get some kind of fusing system on the tweeters. But they do sound good.
There's a lot of great speakers from 70's and 80's too if you can find them. Advents, Dalquist, Infinitys and Klipsch legacy speakers. And some others too.
Those only part infinity, they have mixed replacement drivers, Infinity's version of Cerwin Vega party speakers. The woofers and Midrange are replaced with who knows what !
I totally had a pair of these for over 10 years. Wonder where they are now.
Awesome video.... THanks !i'd love to see a comparison between those vintage speakers up against the latest and greatest of today... in fact, generate some ULTRA HD audio of various sorts on UDIO and use that copyright free music to do an A-B comparison hanging off your A10 Classic !
ADS is the vintage speaker you want to find. Manly the 3 way with the dome mid.
I have a pair of ADS L880s that I'll never part with. Damn fine speakers.
@robertbynon7189 I agree 👍 they used high quality crossover components, built there own drivers, used butyl rubber surround and was one of the first companies to use a computer crossover simulator. I found a pair of ads 2 way with a 10" woofer for $75 at a thrift shop near me and I slept on them because I am a diy speaker builder and I have more than I need. But the next day I wanted to buy and use as something to reference to and they were gone. Someone got a great deal. They were built in the town I live in. Not that it has to do with anything. I just think they were some of the best speakers of that time and still can out perform most speakers out there.
@robertbynon7189 the l 880 are hard to beat with that dome midrange. Don't ever sell them
Polycell tweeters were used on several models, and sounded amazing. All of the top end models of Infinity speakers used EMIT tweeters and EMIM midranges since the 70's. Polycell tweeters were used on all of the lower end models, but sounded just as good in many ways as the ribbons. The SM models were in the 'Studio Monitor' series of speakers. Specifications were: 3 way, 3 driver loudspeaker system. Frequency Response: 32Hz to 27kHz.
Recommended Amplifier: 10 to 200W. Crossover Frequencies: 750, 5500Hz. Impedance: 8Ω. Sensitivity: 100dB. Hell of a bargain finding them in this condition for that price. SM 112's were identical in terms of sensitivity and impedance, but their frequency range was 59Hz - 25kHz, and they had a higher crossover point between the woofer and midrange.
At 100db these are perfect for low powered tubes, which would also help to tame that treble.
I had those paired with a Sony back in the day. It was sweet set up when I was high school.
Ok I have to ask why the heck you didn't just connect the speakers to a receiver to listen to them?
Love watching your stuff, have for a while. Just wanted to chime in on these seeing as how I have collected numerous pairs of SM line Infinity speakers. Including SM-150, SM-112, SM-120, SM-122, SM-65, among others. My current set are SM-150 mint condition with original cardboard boxes, love them with some upgrades.
What I wanted to say was, those drivers are wrong. They should have the Polycell High Output tweeter. But the Midrange and woofer are not original to those speakers.
They should have a poly coated (shiny) black driver. Black and gold trim rings, with a typical foam surround on both. Infinity logo on the dust cap of the woofer.
Happy hunting, you should aquire the originals. They sound much better I'd assume.
Look into some internal cabinet bracing, poly fill on the inside, standoffs for the bottom and binding posts for the back.
The SM-125's there look to be correct!
I've had Infinity reference 31i speakers for 5 years now, and I'm about to buy another pair of them. I paid them a ridiculous €140.
I have infinity beta 50. Set with my denon, using audyssey, they sounded very good the last time i used them. From my memory they sounded better than my JBL studio 580 but because i finally got the JBL where i like them, i haven't changed them back. I do remember the biggest weakness on the infinity beta 50s, are the bass was a bit muddy in my small room.
If you don't have room correction don't even bother with them, though. They have shreeking upper mids if they aren't room corrected.
I had a pair for years ran them on 6” stands with a Adcom 555 mark 2 and Adcom GTP400 preamp. Concert levels sound
H/K receivers of that era had the best amp sections of any mainstream receivers. I had a 435. Very strong, high-current amplifiers. A 75 WPC rating was comparable to 130 WPC from most others. The 7550HD had two power supplies, one for the front L/R and one for the other 5 channels so you could properly bi-amp the fronts if you wanted to. A few other brands did the same with their top-tier avr's back in the day as well. As for Infinity speakers, I'll take the Danish produced Infinity Kappa 200, 400 or 600 ($$$) or the more common IL series over SM's. 🙂
When I was a little kid, maybe 10 years old, I remember my uncle was really into hifi and had the original JBL L100s. I have a picture of them in the background in his apartment. I wonder if he even still has them and if they are worth restoring.
Yeah, those mids and bass driver are replacements. Infinity sm-122, Birthday present 92-93. I think parents bought them for $225-250 at either Cicuit City or similar stere. Still in great shape minus the surrounds on the 10"woofers. I do remember the bass was lacking and tweeter control having no real effect. One of these day's I will refoam and try a few mods to improve them. I am in no hurry though.
all twelve possible combinations of a pair of the four speakers, taking in account they all sound different ( and so the panoramization and frequency responses of both the room and your ears)
1 left 2right
1 left 3 right
1 left 4 right
2 left 1 right
2 left 3 right
2 left 4 right
3 left 1 right
3 left 2 right
3 left 4 right
4 left 1 right
4 left 2 right
4 left 3 right
I have the Infinity SM-122, with the 12" woofer. They're very efficient and loud, but sound nice enough.
Ive been rocking Infinity Kappa 8's, 7's and 6's for close to a decade. Not much out there can beat them.
No matter how high the intention. It's what the result is for that means something. Among the meaning.
We shall live vicariously through your son in law! I haven't heard bad things about infinity. Paul McGowan era possibly?
Infinity SM65 speakers I my bedroom atm. Love em 😍
Infinity hadda swell line of speakers in the later 1970's. Models Qe, Qa, Qb and the big boys like the Reference Standard ll. Good sound for the money. Employing their EMIT tweeters. A friend had the Qb's powered by a Pioneer SX-850 and they could get loud and stay clean-n-clear. Very impressive systems. Your SM-125's are from late 1990's. As long as you like'em, that's what counts.
Love infinity back then. Opted for Boston acoustics hd8 in 1990. Current classics I have advent legacy iii’s
I love the infinity brand. They are great. And if you get these with the planar tweeter they are even better. Infinity is very nice
I own a pair of SM-112 that i enjoy on a daily basis in my home office hooked up to my 90's Denon PMA-915R integrated amplifier, and streaming from Spotify on my PC by way of the SMSL SU-1 dac. The original 10" woofer and 4.5" midrange on your son-in-law's SM-112's have been replaced with some off-brand inferior products for sure. The factory midrange would look identical to the one on the SM-125 he has, and the woofer would look identical to that SM-125 12" woofer as well, but the 10" version.
Oh man... I had a nice set of Infinity back in the day... they were so 'solid' in the tone... fit my room perfect. Seems I had a automotive infinity that were great as well. My jems are Klipsch KG-4 , Bose 301 Series II, and Mission (bookshelf speaker) from England. The Bose 301 do not work for my current room, but I've had them tuned into a space properly and love the tones and surprised by the load they could take... coupled them with the Klipsch KG-4 in one perfect space. *Note foam replaced - source from "Nashville speaker guy" -- mostly powered by Marantz 2285B. Looking at your channel for another amp head (Marantz tubes and lights replaced, but the input channels have decayed). Memories.... I swear a buddy let me borrow these for a while. Infinity had some great cones... really solid tone on the ones I've enjoyed. Good share !
First pair of speakers Infinity 1001a back in the seventies. Pioneer receiver and turntable
Had a pair of those back in the late 80s to early 90s they were great.
I have SM125 bought them new in 1996 love it sounds amazing I still use them with my Yamaha AS2200. My speakers are like new like came out of box.
I have owned the SM-125 and they sound a lot like Cerwin Vegas. I paired them with Klipsch heresys and they sounded very nice together.
FYI, when I look up infinity SM 112 I see drivers that look different than the midrange and woofer you show in your video.