How Much Power Do Speakers Need? | Home Theater Basics
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- Опубликовано: 18 дек 2017
- *****Correction 105dB THX is a peak value, not a sustained volume. Home Theater Basics series returns with this great video! Figure out how much power your speakers need. All values collected and spoken about are in reference to a peak value. THX continuous value is 85dB.
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I'm 66 years old and have been a music lover from my Beach Boy days, still like a lot of what's on the market. I never knew what you taught today, so Big thanks. I'm retired and have a Sony receiver 7.1 rated at 125 watts per channel powering 5 speakers on surround sound, but I use only the 2 front Polk's on music setting. I sit 8 feet away. Speaker are rated at 89 sensitivity, so thanks to you I now understand I'm good for what I need in an apartment. ( Polk 10" subwoofer needs to be kept down till neighbors leave. LOL
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Techno Dad love the way you use slides to present the information it makes it so easier to comprehend and to follow up step by step as you explain. You're a true Professor! Keep up the good work brother. 😀
THANK YOU SO MUCH FOR THIS VIDEO!!! I loved how you explained it all in detail and was easy to understand.
That was actually informative, good job.
Thanks Wookie!
The very best video on this speaker info I’ve seen yet.thanks for putting so much effort and time into the research dude your a bloody legend.
This was really helpful, thank you!
you are the guy! I wachted soooo many videos that explain this, but they get waaay too geeky, your explanation is soo easy to understand, thanks for the work!
Great video! I have the same speaker setup and knew the klipsch had a high sensitivity rating but didn’t really have clue what that meant. Can’t wait for the next video.
Just found your channel. Dude, you are very talented at making complicated concepts easy to understand. Bravo!
Thank you so much Kent!
Nice job breaking it down for us. Thank you!
Congrat on your 100,000 man. It's stand with reason, this was one of your best video I've seen from you. You have some great videos in general but this time you actually hit another target of listeners,.I would say a notch above amateur audiophile. I think if you keep your videos simple and with the usual quality we are used to from you and bring-in the more advance audiophiles listeners with topics that actually interests these people you will certainly gain a broader audience in the process. Don' t get too technical but do keep your slides coming in with specs, we love that lol. Cheers Al
Thank you so much Al! I am definitely trying to get better with every video!
I really appreciate this video it helps me understand why the sound field on different surround settings can seem really good or total junk . i am not a pro so this bit of knowledge really opens my eyes personally on how to better calibrate the output of my receiver instead of just cranking up the volume and making my receiver get hot because i lack understanding of what i expect my speakers to do thank you very much.
Hi! No problem! I'm glad you like the video!
Thank you so much for your informative videos, I don’t really know that much about all the numbers and technical information for home theater systems but I really learn a lot every time I watch your videos. Subscribed and following your channel, please keep up the good work!
Hi! Thanks! I'm glad the videos have help you learn something new. Thanks for watching and subscribing!
You nailed it with the distance to dB reduction test! Just the piece of puzzle I was missing..thanks a lot!
Awesome!! Glad you found the video!
Awesome video!! Thanks for the info. You da man!
Thanks a lot for these figures. Loved the video.
You're a man after my own heart. Presenting info in a clear way, really helping people make informed choices! Awesome!
Thank you so much! I truly appreciate the kind words. Thank you for watching.
Awesome explantion of science of sound. Well explained clean and crisp
Being new to understanding home theatre you videos have helped me understand a lot ! Thank you
You're very welcome Dianna!
Thanks a lot, that was really informative. I have learnt a lot.
Very helpful video!
Incredible information here! Taught me a lot!
Awesome! Thank you for letting me know!
Hi sir I got most part of your vdo, but I have one serious doubt and its bothering me a lot,so you mentioned a low sensitivity speaker will have around 88db@1w@1mtr,
91db@2w,
94db@4w,
97db@8w,
100db@16w,
So the same speaker Will have 6ohm,10watt on the backside,does that mean it will produce 97-100db(lies between 8w-16w from the above chart) at 10watt at 1mtr distance.
very helpful, thanks!
Very helpful video bro. Thank you
You’re welcome!!
I will never understand why anyone would give this a thumbs down. This was the best explanation & demonstration i have seen yet and one of my favorite Techno Dad videos. You mention at the end your going to do a follow up which how to decide which amp for a given speaker, did you ever get around that?
Hi Brandon, thank you so much! I'm glad you liked the video. I have not made that follow up. I guess this is a good time to do it then. Be on the look out my friend!
Well done, another excellent video. Very informative and bad ass t-shirt 👍
Thank you!
Excellent video; I like it so much that I subscribe to this channel. Very informative and I like the charts. It makes things easy to understand. Thank you and God bless.
Thank you for watching Kenny! I'm glad you liked the video!
Excellent presentation....
Keep the teaching going..u rock
Excellent video, I never knew the sensitivity rating but I quickly started looking at them...Elac vs Martin Logan where it’s 85/86 vs 92. Still it seems for small rooms/dens you probably can cut a few corners and be fine with a set of Elac B6.2 as an example.
Thanks for the video, very interesting.
You're welcome!
Just awesomely explained .
Glad you liked it!
Great Explanation!!!!!!!
Great video.I was just thinking the other day about getting a amp, but didnt really know if I needed one.
Thanks! Maybe, maybe not. I still think I need one...
Very very helpful info. As per ur say we need good sensitivity speaker than a high power receiver or amp.
WOW!! Very very enlightening!! Thank You! I'm completely NEW to home theater and you have save me TONS of cash even though I have NOT even purchased anything yet!!
Hi! Thanks for watching! It can be VERY confusing but at least they give us stats that we can use like speaker sensitivity. That's really the only way we will know how loud the speakers can get and how much power we need to send to them.
Can you give me the title and author and where I can get the SONG that you use in the JUMP portion of all your videos? I LOVE it and want to own load it.
New to your channel. Like the breakdown you do
Welcome aboard! Thank you so much!
All hail klipsch RP sensitivity ratings. Rp6000f&500SA's coming later today. Then 2 pb 2000s later in the week. I've been on stereo bookshelves for a few weeks now while I wheel and deal to get a more appropriate setup. My first setup was whatever I could afford. This is round 2. I got some great deals over black Friday (rp500c for 289) man going from the reference aluminum tweeters to these titanium ones...theres such an unbelievable difference. I actually had the rp500c on for a few days with some older reference bookshelves, and it blew everything else away. It was like my center channel was operating on another level of clarity, and once you hear it, you need it.
Anyway. Thanks man
Nice!! Thanks!
The biggest problem with this is sensitivity rating seem wildly inaccurate from a lot of speaker companies. Good thing you RUclips guys are here to give the real ratings. Thanks for the video
Yeah, that sensitivity thing can be an issue.
This is where Cerwin Vega speakers excel. They have amazing sensitivity ratings. I have several vintage sets. Can't beat the way they look IMO. And if your too heavy on the volume knob, they are fused. Win win
Yup! I remember replacing a few fuses in the past, lol!
FYI I’ve watched this video 5 separate times... great vid man
Thank you so much! I’m glad you like the video.
Nice explanation 👍
Thanks!
thanks for this video I save my dollar dollar buying a new amp..I just got Paradigm Prestige 85F and Im using my old amp thats push "85w" per channel Pionner Elite SX-S30 I love how it sound and they go pretty loud on 80% volume which I dont really do on regular basis..But im on the market on buying a new amp and I came across with your video. I guess I dont need it anymore..
Really helpfull, thanks a lot!
You’re welcome!!
Great explanation
Thank you!
Hi Techno Dad, thank you very much for the video! I saw your other video about the benefits of adding an external amp. If you have high efficiency speakers, like the Klipsh in your video, and are getting 105 dB with 16 watts at your listening position, do you still need an external amp for your receiver? It seems that any midrange AVR should be able to do the job, although the power would be less than the RMS power spec for those Klipshs. I have a 5.1.2 set up with Klipsh reference speakers and a Yamaha Rx-A770, and thinking about upgrading to denon 3700h with an external amp. Any feedback would be appreaciated!!
The best explanation!, Thank you Techno Dad!
You're welcome!
nice video dude. internet is immersed with videos about wattage and ohm resistances but lack of sensitivity explanation, where this vid shine.
Thank you! I’m glad you found the video informative.
Wow!!....thank you so much!....I've never known this!...nobody has ever explained it this way as I now understand! This is awesome info especially given the wattage of the receivers I'm looking at! In the past I would just look for the biggest wattage rating of any particular speaker I was buying...I know understand why it's very important to know the sensitivity.
Hello again! Glad you got some good information for my video!
@@TechnoDad yeah...lol!...I'm trying to learn as much as I can and your helping me alot!...thanks
No problem! Feel free to shoot me an email anytime: technodad55 at gmail
Very nice info thanks, i just returned my Klipsch 820Fs. I replaced them with KEF Q750, these are paired with Def Techs. Rears are BPX, Sides are BP7006s. Center is CLR 3000, and towers are now KEF Q750 towers. All powered by Denon 2600H receiver. Very happy now, would you recommend a second amp to power the towers separate? I have two extra amps not being used
Great Video. I am now clear on the DB sensitivity rating. Do you have any video on how to match impedance on the speakers with the receivers?
Very good informative vid
Thanks!!
I love your tutorials mostly cause are simple to understand.I am gonna buy the sony dn1080 avr and the monitor audio mr6 floorstandind speakers and it would be awesome if you can make a tutorial how we bi-wire and bi-amp speakers and the menu settings.Keep up the great work!
bi-wire is pointless(same amp), bi-amp for this u need 2 amplifiers ,u can custom your sound how u like !
holy shit, I can not tell you how hard it has been for me to find this information. thanks for explaining this.
Hi! You're very welcome!
Awesome video ... for this reason, I just bought a 2019 Marantz AVR with rated 50 watt (page 10 of manual says 70 x 7 channels and does not mention ohms). Anyway, I found that indeed, 50 or 70 watts was plenty of power to hit the same volume as I had with my 90 watt/ch Yamaha. My speakers are 90db sensitivity in-walls. Let me see if I can understand this a little more: in your case, you get 99db @ 1 meter and lose about 3db per meter beyond that for the same wattage at the couch. I wonder what wattage it was to get those numbers? Was it 1 watt @ 1 meter, 2 watts @ 2 meters, and approximately 4 watts at the couch? I'm thinking you would have to double the wattage for every meter you are beyond the speaker ... 3 meters away so double wattage twice. I am thinking in terms of how much wattage needs to be applied - and sound intensity is what I'm after. By this then, if you double the distance (1 meter to 2 meters) then you cut the sound intensity to 93db at the microphone and at 3 meters it should about 89db at the couch with the same applied wattage of 1. To get from 89db up to 92db at the couch you would need to double the power to 2 watts, up to 95db would be 4 watts, 98db would be 16 watts, and 101db at the couch would be 256 watts. 101db to 105db sounds about right - I really like the empirical measurements you took with the meter. In real life, a quality 50 watt or 70 watt is plenty of power - the more would give more headroom, but my rule is in lower watts, go with quality watts. Thanks for the vid!
Hi, Thank you so much for your informative videos keep going . may I have some advice about my speakers I ve just planned to change from stereo to a new 5.1.2 configuration klipsch RP600M . for right and left as for the rears , RP500C center, RP500SA for atmos and subwoofer tge SPL150 . so my question how to get get the best from those speakers since im confused about how much power do a need in a receiver or I need to add a power amplifier also .
Cheers,
O yes, it helped me a lot, thank you again. 🤘🏻👍🏻
No problem!!!
I was initially looking for some polk audio rti a7 or a9. But this helped me so much to understand that they are quite powerhungry speakers. I think I roll with Klipsch :) any thoughts about Polk speakers?
Just bought few days ago my klipsch bookshelf speakers. They sound amazing 😍 especially around and above 70-75 db's, they really come alive. Since I don't have the space right now, I'm using these just for stereo setup right now . Once I move in to my next apartment, I'll be using these as my rear surround.
dayum! thats lot of wattage! haha thank you for the video. Im currently creating a home theatre.
Interesting, thanks
excellent video, I would like you to give me your opinion. I have a pair of klipsch r-15M and a central r-52c connected to my onkyo tx nr575 but I feel that it lacks power, according to onkyo specs it has 80 w per channel to 8 ohms but the specifications of the klipsch are higher. So I need an amp with more power per channel? 100w at least?
Thanks for the info! I am currently saving and researching surround sound. Ready to upgrade from my 7.1 soundbar. Just not cutting it for me.
I totally get it! I have a whole series on Home Theater Basics you should check out: bit.ly/TDHTBS
Techno Dad thanks will do! You mind if I run my speakers and reciever through you before I buy it to get your opinion ??
Yeah, no problem! Email me: technodad55@gmail.com
Techno Dad thanks
first thank you for the informative video. you also helped me go with oled c8 😎Ever since reading conflicting opionions, im stressing about what amp would be best for me. Klipsch Rp160m 2 channel for now with plans to add add Klipsch center and surrounds when I eventually move. Originally looking at Yamaha rxa670/770 for $260/330. 80/95 watts at 8ohm at 2 channels Medium sized room. A little less than ten feet away. In your opionion, or should I step it upto a pre amp out set up like a marantz.$650 with 100 watt at 2 channels 8 ohm.. both are 7.2 capable but I'm only interested in 5.2 max
Nice thanks
Very informative. I live in an apartment and obviously my Klipsch 7.2 setup is near my ideal sitting position, so no trouble reaching enough power from my 80 watts per channel Denon AVX receiver. However, what is your opinion in investing in an amplifier in terms of possibly gaining fidelity? Hope your Dog had ear plugs too :)
Hi Chana, I am from australia and I have been watching your home theatre series and I really like it. I purchased klipsch RP 6000F along with Denon AVC-X3700H for my new soon to be ready house. I am planning for 5.2.4 My room size is about 5mts height 3.4 mts width and 2.7 height. My preferred seating is at 3.5mts. 105dB THX reference level is way too high for me. I would only need 75dB at my seating position. I have few questions. As per your video do you think I would need an external amplifier? As per my calculations each speaker will need less than one watt. Is that correct? So, doI need to do the same calculations for the surround speakers as well?
Never new this.
Thanks
No problem!
I did not know that very good video
nice video, I also tested the DB level at where i sit while watching a movie, doing all the math with the sensitivity of my speakers and how far i sit ect... i came to the conclusion that for 90% of my listening levels, im probably using less than 6 watts most of the time. Its funny at actually how few watts im probably using and sometimes bigger isn't always better or even needed.
Very true. I like having extra for those big dynamic shifts in content. But for the most part, 10 - 20 watts should do if you have efficient speakers.
Thanks nice video!
Thank you too!
6:29 The inverse square law estimates -6db for every doubling of distance from the source.
I'm no audio scientist but is the smaller amount of loss, measured with an SPL meter, due to reflections adding to the sound levels as opposed to an anechoic environment?
did you leave the dog when you tested lol!
Lol! The dog added 1 dB!!!
Awesome T SHIRT AWESOME TUTORIAL
This is so interesting. Im about to get the klipsch 8000f. And i sit about 12 feet away from screen. At a really loud point ive measured 85db listening level creeping to 90db. Im running a yamaha rx660 which measures 80w 8 ohms 20/20 2 channel Driven. Except of course im running it at 5.1 so i have no idea the 5.1 power output. Going back the klipsch am i correct in assuming all i need is 2 to 4 watts to run the klipsch st 85db max?
Thank you, for my understanding you don't need expensive setup(amplifier) to drive those high-quality speakers as long avr can produce enough power and if you won't crank it up to thx levels, I'm alright with an oomphf level sounds and enjoy movies in sort of theater quality, thank you once again
Yep! I run klipsch reference speakers for my system
Very instructive video however the THX value is all over the place. Let us say we have a 5 channel system with speakers of 87 db sensitivity. and placed 1m around the listener. This means that at THX continuous we need less than 5 watts to power the entire system, right? And in the case of THX peak value we need an amplifier/av receiver with 320 W of total power. And if the speakers are placed at 3m around the listener the values move to 20w continuous and ~1300 watts for THX peark value? Am I missing something?
Thanks for this video Channa, I thought I was going to blow up my fuse if I get a outlaw 7000x to power up my front left,right and center high sensitivity klipsch speakers using the biamp method...
Where can I find the sensitivity db?
My jamo speaker mention only ohms and watts in short term and long term
Hi sir. plz suggest best av receiver, for klipsh r26f- 100w, rc52ii 125w
How to match speakers and amplifiers video? Cant find it, did you make a follow up video to this as you promised?
Hi .. i am using the same Klipsch RP 280F and RP 450 C Speakers .. But My DEDICATED Home theatre Room is 12 feet Width x 28 feet Approx 9 meters Length .. How much power do i need ?? And Which power Amp do i use ???
Hi bro, I'm first time building a speaker on my own. I have 100w 2.0 Apm that will power 50w/channel. for 3 way crossover i chosen:
woofer - 40w
mids - 15w
tweeter - 15w
all are 8ohms (i have option to go for 4ohms)
What do you think, in total 60w for speakers is too much or how should i choose mids and tweeter power?
Can i pair pioneer fs 52 or Polk tsx440 to my Denon 2300? Pls guide.
Great content thank you, I would just like to understand Something which confuses me abit, I know what you mean about the efficiency of the speaker, but some people say if you driving say the klipcsh RP600m which is 100 RMS book shelf speakers, they've recommended a 50whatt or 75whatt system, should 100RMS output amp not be the best option???? Hence that's what it can take.
Or the Klipsch RP-8000F being a 150w rms speaker. If only being able to get say a 120w per channel amp possibly put strain on the amp, or what's best rated. More rms output from reciver than what the speaker can take or other way around for being safe??? Is there a rule of thumb for pairing up RMS speaker sizes to RMS rated output of receivers?????
I've been binge watching your videos :) I am looking to convert my unfinished 3rd floor into a home theater. I want to use a Denon AVR-S950H 7.2 Channel (185w X 7 ) receiver to push a 5:2:2 speaker setup. Speakers are going to be: FR, CEN, FL Elac IW-DC51 (in-wall) ATOMS and RR and RL Speakers = Elac Debut IC-DT61-W x 2 (in-ceiling) Klipsch R-12SW Subs x 2 From my research, almost everything I read encourages going with a separate power amp for best performance. However, I'm not using big floor standing speakers, will I be okay with the power provided by Denon AVR-s950h? Thanks!
75 - 80 db is my comfort zone!
Ordered Yamaha 4950u 5.1 system with 110v. Going to use 220v socket. Still confused and don't know how much wattage 110v to 220v converter do I need?
Now I understand this, but then I question what's the volume setting we set to hit that 88db or 98 db?
My yamaha avr usually have this negative setting and i usually listen at -30db
HI ,what did you say at 6.07?
what did you play your flack through or on?
just got my rp280f ,and shitting myself that i need to spend more money on the extra amp cos my yamaha rx v473 might not be enought
Thanks
I need your help.
I have two rp26 klipsch towers, rp440 center, r3650wii side surround and 2 back surround and 2 atmos with 2 svs subs - so 7.2.2 Atmos
Running them on marantz sr7012. I am trying to buy power amp emotiva a-5175 - do you think that is worth it for more power?
Thanks!!
Sir i have kenwood da-1100ex stero integrated amplifiers but tell me what type of spekrs can run on my amp perfectely amp watts is 320 power consumption
My old LG LFS-U850 speakers (only paid $5 for them at goodwill) have an SPL of 82db ( they're rated at 160w 6ohm), my Micca MB42X has a sensitivity of 88DB ( rated at 75w 4-8ohm).
What power amp would you recommend for a stereo pair of 87db speakers?
I am considering buying the Elac uni- fi 2 un52 speakers. Can you help me select a good AV receiver and subwoofer to match these speakers. I am looking for a 2.1 system. My room is 5m x 7m x3m height.
Rockin' a COVID cut 3 years ahead of everyone else. Nice vid.
LOL, thanks!
Hi Techno Dad, can you do a video on sound bar for TV movies. I like your videos for the technical details (chart and all). I know you have done exhaustive research in the subject matter you are dealing with, be it TV or Speakers or a Projector review. By the way, nice hairstyle dude!
Hi! Thanks! I don't really have a detailed explanation on a soundbar, but I do have this video: ruclips.net/video/Q6U5pFaHIms/видео.html
(for home application) if we use an active subwoofer will it still draw power from the amplifier and still have to formulated first or just plug it in into a pairs of the socket (back L & R maybe) since it already have it own power source??
Hi! So you plug the sub to the subwoofer pre-out on the back of the AVR, you aren't powering the sub from the AVR, it's just sending a signal through an RCA cable. The sub needs to be plugged into power. I explain all that in this video: ruclips.net/video/AkHYDvvX29A/видео.html
Sorry to dig an old post. But ML spec sheet threw a wrench in what I learned here.
My specs are listed at 94db@2.83 volts per 1 meter. Not the usual 1/1 ratio. So at 10ft. How would I compute this?
Something that wasn't mentioned in the video was if during his test if he used only one speaker or if two or more are actually playing. That would have an impact in the readings right? Several speakers playing will sound louder than just one speaker right?