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The OLDEST Piece of Tube Guitar Amp History I've Ever Restored!
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- Опубликовано: 7 ноя 2019
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The Speaker Workshop: bit.ly/RECONE
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In this video, we'll service and electronically restore the oldest guitar amp I've ever featured on this channel - a vintage, near-antique 1941 National-Dobro Tweed Model 75 which predates VALCO and Fender! This Model 75 came to me in relatively poor shape. It had not been serviced in many decades. Mice had at one time taken up residence inside the cabinet and chassis, and the speaker was dry-rotting before our very eyes. We'll send the speaker off to Tom Colvin at The Speaker Workshop in Fort Wayne, Indiana and even enlist the help of my wife to sew a ripped grill cloth. We'll troubleshoot an issue with no sound and briefly demo the tone. This is a long one, so grab a coffee or a beer and settle in for a fine and important piece of guitar history!
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Anyone hoping or expecting to see a SPF vid, here's last week's SPF BONUS vid from Channel 2: ruclips.net/video/q35GP5OTCfg/видео.html
You need to do a SPF on the latest Guitar Center Catalog for the holidays.
Brad see this www.ebay.com/itm/1940-National-Dobro-Corp-Model-75-Vintage-Tube-Guitar-Amplifier-Tweed-1x12-6L6-/193096838123
Hey Brad , is this the schematic for that amp? www.oldfrets.com/Valco/Schematics/national-dobro_75.pdf
Nevermind it's not the same one.
Brad that's a cool little amp. This was a great one to share as seeing the historical guitars and amps (any musical instrument really) is always an education
The year my dad was born. He has the same patina and is need of a little restoration work himself, I'll ship him to Brad in the morning.
ruclips.net/video/PU5xxh5UX4U/видео.html
@@TheGuitologist OK Boomer
Brad said, "Address Unknown"! Lol
Maybe he just needs a new cord and his pots cleaned
@@yqwgjsg I need my pots cleaned too. Darn hard water buildup ya see.
Poplar 2960 was their phone number. I was born in Philly. Long time ago;)
Wow
Bill Miller I was born in 1967 in a different state and even I remember that method of phone number assignment. My family’s number was Elmwood 0621.
I was wondering if it was a phone number, before area codes.
Hey Brad, I am so glad there are people like you who care so much about the details of restoring and preserving historic equipment like this.
This Reminded me of Uncle Doug even before you mentioned him. I also enjoy watching his channel.
Nice clean sound from this old amp.
Greetings from not too far away from Peter Jensen's place of birth.
This amplifier is without a doubt a real “National” treasure, all pun intended! :)
The odd number on the labels was probably the phone number for one of the two phone companies that Philly used to have.
Just loved hearing Tom Colvin talking about his craft and background of learning it. Would love to see more content like this, be it cabinet builders, speaker guys, luthiers, or collectors. Nice demo Brad.
I buy my speaker parts from Tom (good guy)
The sticker on the output tube says the amp has been serviced, probably in the 50s. The late 50s caps inside confirm it. The areas where those shops were located went downhill really quick in the 60s and repair shops were pretty much gone totally before the end of the 60s. Some relocated to better parts of town. The tubes used were found after 1940 and replaced earlier types with different bases or pinouts. Bell & Howell (also of Chicago) used these same tubes until 1954.
The quality of this era, even on a lower priced line of amps, is a testament to how far we have come. Today's quality is far lower on "cheap" amps. This may not have been considered a cheaper amp than other brands, but the attention to detail is obvious. Those input jacks have the 1930s square top instead of modern type with the bend on the tip to help hold the plug in. The label for the service shop said "Radio" only. No "TV" included in the type of service. Why?, because TV was not in every household until 20 years later. There was no TV. Brad, you did a fantastic job of this restoration. The speaker recone part of the video was great. Glad you included it. That recone shop is also fantastic! SPF was nicely sacrificed for this restoration. Thanxz
I agree. This is better, more enduring content.
You should check out some of the cheap amps that are coming out today. In the last 5 years or so they've made a huge jump in quality. Stuff like the Boss Katana for example is an amazing little thing, it manages to do the whole Line 6 thing except not god awful like Line 6 does with their spider amps, the Katana actually sounds fantastic and they have all these extra features and attention to detail to that personally I'd never use but they're very handy for a lot of people (like you can play through Bluetooth, and some of the models can be played without plugging them into a wall outlet, just running off an internal battery, which is amazing for buskers)
And you can get all these quality cheap tube heads for under $700 from several brands that sound amazing and are great for recording, as they're often something like 5 watts so you can really overdrive them and not be shot dead by your neighbours.
I was surprised too, I always was like you, I wanted vintage stuff only and if I was gonna buy an amp I'd wanna pay no less than $1500 or something like that as I believed anything cheaper would just be terrible. But things have really come along recently. Technology has improved so much. Digital technology actually sounds good now, no I'm not kidding. Plenty of guitarists now buy these things that are essentially amp simulators in a box, to play live gigs with, as they're so much smaller and lighter than amps and just plug into the P.A. system, and nobody can tell the difference in sound anymore, at least not in the mix. Digital guitar technology has been basically all awful until the last 5 years but now they've actually got a handle on it and can recreate real amps and effects so accurately that no guitarist could tell the difference in a blind test. That's pretty kind blowing to me.
Embracing the past is great, these old amps sound fantastic, that's great and all, but you've got to try out some of the new stuff that exists today as well. Use both, together.
At one time, amps like this one in the video were cutting edge technology too, and the idea of an electric guitar was some crazy childish idea that'd never catch on, it was just a fad and only acoustic guitar was the real authentic realm of guitar. The great guitarists of history never shied away from new technologies but we're the first to embrace them, look at Hendrix for example. If he was alive today he'd probably be making electronic music on a computer like Bowie did a lot of and Paul McCartney has done.
I think that might be survivorship bias. Cars are maybe a better example, there were a lot of really terrible ones but not many of them lasted to present day, so not many people really know about them anymore.
I loved the bit where the guys at Speaker Workshop showed their work. Glad they sent you the footage!!
I meant to get more, but Tom forgot to call me to capture it.
Even then man it's really cool, hopefully Brad sends you something else and you get to show off more on the next one
It is simply amazing to watch something that was built 14 years before I was born come back to life and sound that good. Can’t even imagine buying a piece of electronics today and having it still be working almost 80 years in the future. They really were the greatest generation.
When you were playing guitar, I heard a part of a song I wrote back in 96. I was like, Brad stole my song! Got my attention. Anyways, great video! I appreciate your time to make these videos. I especially liked the part about the speaker repair - that was a nice surprise.
Honestly one of the best videos I've ever watched. The detail end-to-end was just awesome. Thank you for taking us way into your process - this was rare and new territory for me and I absolutely loved it!
I do remember the name Bergdolls, from when I was a kid, advertising on the radio in Philly, but I only recognize the name. I live in the suburbs now and don’t go into downtown Philly. Many areas have been gentrified. It looks like the Girard Ave building was originally more than one home.
Loved the Video Brad! If you can, you need to do more of these full length start to finish amp restoration videos like this. Super interesting seeing it step by step and all the tube testing going on. Can wait for the next one!
Great video. Better tell Nigel Tufnel, "This one goes to twelve. "
Likes at 11 I don't to press it, even though it would be one more!
Finally! A repair vid! Love it!
...and now I know where to send any speaker repairs I may come across.
Thanks Brad.
These kind of people who keep alive the knowledge of those pioneers are worth their weight in Bit-Coin.
We need more people like this.
One of the finest vids I have had the pleasure of watching in a long time! Bravo Brad!!
What a nice modern looking 1930's guitar amp brought back from years of silence !! .....Given 1/2 way decent tubes these old amps give amazing lifespan performance....You rescued a good one !!
Finally, another amp repair video! Great job man! Definitely gonna take some speakers up to the speaker workshop.
As a new subscriber am really loving your videos. I'm a musician and reasonably technical, but I find your vintage repair uploads so interesting, relaxing and almost therapeutic! Keep going.......loving your guitar playing as well!
This was a damn nice surprize Brad! Thank you for the upload man 👍. Love the old stuff.
i've been jonesing for one of these man, i love when these go long.
Thanks for sticking through it.
Love how made USA on all components.
That amp sounds smooth 😌😌😌😌
Absolutely epic video, one of your best ever. Fantastic amp and the visit to the reconing place was great.
Logged on for SPF. Got this little gem instead :-)
Thanks for sticking around. I might try to put up some SPF type material this weekend on Channel 2. But I have several other videos in the can I need to edit and post, so we'll see...
Definitely my favorite of your vids so far, Brad! Loved it.
Brad your patients and knowledge .....just amazing . It's so obvious your passion for for anything and everything musical is of the highest standard. I'm just so impressed. I so wish I had your talent and disposition.
Kudos to you, the speaker workshop, and absolutely your wife!!! I adore this video!
And don't forget the video sponsor too, Bony Right. Without sponsors for these long-form videos, I simply couldn't keep doing them and have it make financial sense. But yeah, the wife and Tom Colvin at Speaker Workshop are the real stars of this one.
Was really interesting to see and hear the work tom did, would love to see more of that type of thing for sure, its a long lost craft for sure, great video brad!
Great video! Loved the trip to The Speaker Workshop. Nice addition.
Watching you bring this thing to life was surreal. It was like listening to a guitar through a time machine. Thanks for this.
the world is a better place when there are nutcases like you are around......respect !
I love those amps ! So cool Brad ,thanks for sharing !
From the “dawn” of the 6V6...which was introduced 1936...probably had metal 6V6s originally. IEA codes mostly came around because of the requirements of US Gov contracts in WW2
My guess on the speaker is 32nd week 1937
For me Brad this was the best video you've ever made..thank you your efforts are very much appreciated . Peace and love to you and your lovely family 👍🏻☮❤❤❤❤❤❤❤❤❤❤❤❤
Thanks. I appreciate that.
Larry and Neil are watching this and loving every minute. Awesome to see some history coming back to life.
I'm going back through your catalogue. A year ago I understood none of the terminology , etc. Now it's great to follow along. Kind of like It's a brand new video. Hope you're doing well man.
Lots of past content. Check out the playlist section on my channel homepage if you want to go through them all. Thats a good way to do it.
Very interesting video - I like to watch and listen to your thinking while troubleshooting.
Man that is an awesome SOUNDING VINTAGE AMP......WOW !!! Great job Brad, keep up the great repairs we need people such as yourself to keep the great vintage guitars and amps up and running !!!
Really great Video Brad. The passion for your work is obvious.
Thank you Brad !!! I have a speaker that they don't make anymore and I will be sending it to Tom and his company. Awesome information once again.
The part with the speaker fix was just great! Wasn't expecting that at all. Loved this video Brad, keep improving still.
This was a great watch man! I love your channel dude sit here with coffee doing my woodcarvings learning bout amps. Thanks
That was really interesting & I learned a lot, thanks. Technological/archeological investigating & troubleshooting.
Fantastic upload Brad!
Thanks for a gem of a video.
Best episode ,Brad i love this content , the sound of the amp was simply beautiful , so clean and basic , the job on the speaker was really good ,your wife just sewed that little scar , and together you bring back to life a piece of modern music history . What else ?
Regards from Spain and London
I loved every second of this video. Especially when you pulled out the tube tester and that stack of spares. Never know when you need spare parts
Awesome amp and awesome restoration. A worthy video to bump SPF. Thanks! 🙏
great video Brad; great info and history! Thanks
Cool video Brad ! Don't know much about amps, but this was definitely worth to watch. Also the speaker restore. Learned a lot. That new channel looks interesting too. Thanks as always. Greets from Belgium.
Much as I enjoy SPF, you can't beat this kind of long form in-depth feature!
Nice work, Brad!
Hey Brad :) Regarding that Berdoll's "POP. 2960" - I believe that to be the phone number for Bergdoll's business back then. I used to work for an electronic component reseller i the nineties that had been around for decades. In this area, their phone number was "CE 2-4800" for 232-4800. You would also see it printed on things as "CEdar 24800". This was a a way to help customers remember your business phone number easier by substituting the first two numeric digits with two letters and using those two letters in a common word such as cedar or possibly in this case POPular or POPpa. Strange but true :)
Wow!!! This is VERY interesting! It makes me nervous just watching you take it apart!
We formed our band in the early 60s and being poor we had some old junky amps. Wish I had them back. Good Job.
That guitar solo (start at 57:50) was awesome! Nice touch to a very interesting video. I am a very novice electronics tinkerer and these videos are so helpful in learning (vintage audio circuitry in this video). Keep up the great work!
Nice little piece of history . And good on ya for sharing it . Good vid brad 👍
Sweet! Man I enjoyed watching you bring this amp back to life.
Thanks so much for this fascinating look into the past!
Love to see antiques restored ! Nice job, Brad !
I love the detective work and the love of history here. And the satisfaction of getting this old amp to sing again. Who knows when the last time any sound was pushed through it? So great, really great job.
2 bad original tubes, c.1960 recap...could be decades.
Cool vid brad, Enjoyed the recone content etc...Sounds great!
Thank you guitologist, learned a lot about vintage amplifiers while watching this video thumbs up for you
Fascinating video. Nice refurbishment. fun stuff with the tubes. I remember seeing that kind of tube tester as a kid, when we had TV repair shops. The amp sounds very clean, good for a small room. Watched the whole thing. Cheers.
Great work; great video -- really interesting little old amp -- thanks!
This one of the coolest videos you have done, I just really enjoy these. Ever thought of building your own amp on this channel? Then put it up as a giveaway.
Ben Huhndorf Giveaways are an unsustainable model.
The Guitologist or you can sell it on reverb, I just think it be fun to see a video series of you building an amp.
Only an hour long ! it went so fast, the historical value with this
amp and most of the ones you have shown us ,thats priceless,
the tone of the restored circuit and cone are timeless ,yup i
really enjoyed this ,one time a mouse decided to explore the
pcb in my prized fender sdl 40 watter, emptied his bladder
and burned out the traces in several places ,,some acid trip !
Wow What a great Job you did on that Amp Brad, you’re a Genius Man, Yessssssss
Thanks Edgardo. I appreciate you watching.
Cool amp and learned tons on restoration. Dude! You're a great musician. Listened to the "test" twice. Honestly, moving, I have had a few but whatever, I know. Thank you
Big Uncle Doug Fan and all around good guy! I LOve all things old Radio and amps. Love what you're doing here.
Great job Brad you brought her back, the customer is probably extremely happy to have that unique amp. I'd love to hear some old P-90's through it or any old arch top.
This is awesome! I never knew there were places out there basically restoring speakers.
That was a great video. That was a nice sounding little amp after you polished it up.
I think this might be my favorite vid that you've done...love the walk-through and recommend for speaker repair...I have several 1950s 10-inch speakers that need re-coning.
I was panicking when the cone fell apart because I was scared he was going to replace the speaker. So glad he had it re-coned right, this one definitely deserved it.
I'm wondering, Is the speaker inside this Dobro also 10 inches?
Great video! Really enjoyed this!
Amazing work, Brad. Just top notch.
Complete overhaul of an antique museum piece. Nice job! Nice video!
Very nice amp and it sounds great! Thanks Brad!
Hell Yeh !! The amp repairs are back. Well done Brad.
I wish I had your knowledge, man!! Good job!! And nice licks by the way! Really good stuff at the end!!
I have a WEM combo from the 70's. When i first opened the fuse housing it had tin foil wrapped around the fuse, talk about Cowboys. I wish we had a good Amp tech in the UK like yourself that doesn't take the piss with £100 ph service fees. Their mega expensive and quite big headed. Forced me to take an electronics course at College, i just passed with flying colours. It was only a beginners course but i will be starting the intermediate course later this year, it's a few weeks longer and more expensive but from what i have learnt and repaired already makes me know it's worth it., i'm 50. You inspired me pal. God bless you Brad.
Just came across this channel now...Brad.., thankyou and Uncle Doug and the guys at the Speaker workshop for sharing the knowledge. , and restoring these beautiful gems of byetone era. ..:)) alex ( south africa ).
Really enjoyed this video love that electrodynamic speaker.
Beautiful restoration.
Wow this is A Great video Love The old Amp Thanks 🎸🎻🎸☮🎻
Very Interesting video ... Thanks for sharing !
Good one sir, and lovely playing at the end
Beautiful job,
You have the knowledge and experience with the equipment. Very impressive work. Thanks for the video. I wish you was my neighbor.
Awesome work, great work Brad!
Great video Brad! I liked the speaker shop bit too.
Great Video... This amp is vintage Cool... Nice tone
awesome video my fave so far amazing work
Uncle Doug is a master in old amp restoration ! Beautiful amp and quite in a very decent state
Very nice job. Now I know who to call when I need a vintage tube !😀
Good video.
That amplifier sounds wonderful.
Good stuff!
thats a very nice job , man .... just love it .... i wish i could send my amps to you to check them out ..cheeers
Ha. LSD balls. That's when you get old and they sag so much you start trippin over 'em.
Grandfather bollocks along with grandfather ears! Lol. And long hair from your nose & earholes & eyebrows like a Russian grandfather!
@@triplesevensix291 I resemble that remark lol.
@@LightningDogg Ha! Cheers.
And when you sit on the toilet to drop a deuce, your nuts splash the water. Getting old gargles balls.
Really cool video Brad!
Hey Brad, awesome video. When I was a little kid, probably about nine years old I inherited something similar to this from my grandpa. He had a pick up on his violin, and played in a country band and use that amplifier. It was interesting, because the amp that I inherited had a lacquer cabinet instead of the tweed. But it was very similar to this one that you were working on, grandpa always said he bought it brand new in about 1939, so if that helps there you go my friend. Keep up the good work