Vintage 1965 Fender Twin Reverb...Can it do HEAVY METAL???
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- Опубліковано 23 лис 2023
- In this video we'll answer the age-old question...can a Blackface Fender Twin Reverb AB763 play METAL? We'll show several mods you can make to your vintage Fender Twin Reverb to get MASSIVE amounts of overdrive, distortion, and high gain tones.
[RE: Reverb Bypass "Super Ice Cube" Overdrive Mod]
Since publishing this video, some have asked whether the Reverb Bypass Overdrive Mod will smoke the reverb transformer by changing the load. Let's address that. First, the Input tank transducer is about 77 ohms DC resistance. That DC resistance isn't going away when you short the jacks to bypass the tank. You're bypassing the tank with the AC signal, but you are not removing the DC load the transformer secondary is seeing at any point. It's still there, and it's being put into parallel with the grid leak resistor from the recovery tube, but if you do the math, it doesn't change the DC resistance the transformer secondary sees between its leads. Using ohm's law, the parallel resistance of 77 ohms and 220K ohms is still 76.9731 Ohms. The only way the tank would see a drastically different DC load is if someone turned the mod pot into the "Bypass" position and then unplugged the reverb tank from the "Reverb Output" jack on the amp. This would suddenly remove the 77 ohms of DC resistance on the transformer secondary and it would see 220K ohms instead. So one should be cautious not to do this as I don't know what the outcome would be in that case. Probably nothing if you didn't leave it long, but might smoke the transformer if you did.
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1:10 Introduction & Inspection
2:55 Talk with amp owner
5:56 Capacitor Inspection and Change
15:36 Discussion of Mesa-Boogie Simul-Class Circuit Mod
17:11 First Power On with Variac, Tube Failure
23:02 Tube Testing with Hickok 6000A
33:50 7027A Tube sub for 6L6GC Socket Mod
35:31 More on the Mesa-Boogie Simul-Class
37:50 Master Volume Mod
44:08 6G6 Bassman Presence Control Mod
48:28 Normal Channel Reverb and Mixing Mod
53:51 DISASTER! 7027A won't work!
1:01:38 Super Ice Cube Reverb Bypass Mod
1:05:05 First Tone Test with Cigar Box Guitar
1:08:22 Bias Soviet Russian 6P3S (6N3C) Tubes
1:10:34 How to operate the amp with new mods
1:17:22 DEMO w/ FULL BAND Zio Meteorite
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#electronics #guitar #repair - Наука та технологія
Check out the part I had to edit out of this video over on Locals: theguitologist.locals.com/post/4918182/fender-twin-noise-troubleshooting-unedited-locals-exclusive
Pure entertainment Brad, thank you! I am sat here bunged up with bad cold. That was great medicine.
Glad you enjoyed it!
Couple of those recorded tracks sounded very Iron Maiden-like. Badass work and playing as usual Brad!
Killer demo @ the end. You're really improving on the drums man! Great job on this one. Some pretty versatile mods right there. 😎
Thanks for watching!
You stole my thoughts, really !..! !..! That is a killer amp !!!!
Damn I wish you were not 2000 miles away, I ain’t never heard a twin do that!!!😳😅
And with single coils no less!
Amazing, the mad amp scientist, as usual, Brad, seriously time to build a guitoligist custom head!
SMOKIN’
I've finally realized Brad is the Jack of all trades and the master of all!👍
Brad, this is YOUR MOMENT that changed your fortune!!! I have a factory Fender Evil Twin and it never sounded ANYTHING like this no matter what I tried!!! It's the reason it's buried under other amps and pedals in my living room corner for several years after I bought it and gave up on tube distortion from a Fender amp. GREAT JOB Brad...your future is now secured and only going upwards and onwards!!! Dan G. :):):)
Twin reverb on steroids. Your understanding of schematics is mind warping. Especially liking this mod because the amp can at anytime revert to its classic fender twin settings/sounds. The demos you made absolutely prove this, and was a real treat for me, watching the video. Great to see you back, in any of your incarnations.
Wow! This is the video I've been hoping you'd make for years dude. Always knew the Twin could do it all with a few mods but I've never seen this particular combination of mods together and BOY do they work a treat! Thank you so much for sharing this content Brad. Going to spend all day tomorrow modding my old SF.
Wow! Just Wow! That in impressive as hell, from the great opening to the clear explanation of the internals of the amp, the mods and the honest inclusion of your errors-and their reason along with your great humor this has to be my favorite video of yours to date. This should be at or near the top of "The List of The Greatest UA-cam Videos" The amp and musical demo at the end way the best topper too, You included many great styles of my favorites (Black Sabbath, Ozzy, Iron Maiden, Metallica Rainbow, Dio etc.) From lawn equipment to amp magic you always impress. Thank You. 🤯💯👍👏
Also I must add I think it's great you don't hide your mistakes
We all human at least most of us lol
It's all about learning
Thanks for all the knowledge
You ruined it... I love it.
The end multitrack music was the best part of this video! That fender amp is hot and alive.
Nice... glad you got back together with you're friend. Just fun times. See you next time Brad.
Those gold GE's are way cool. Have seen them a number of times while servicing 1960-65 fenders. Cheers
That next to last jam sounded like Foghat doing Voodoo by Sabbath.
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Oh, you are alive. It's about time you made a damn video brother. Seriously, we need some amp repair/mod videos. You and Uncle Doug are my mentors and the genesis of me having the balls to man up and start messing with tube guitar amps. Get your Sugar Honey Iced Tea together.
Dude, I'm blown away. That sounds magnificent! -So did the playing. -If one could footswitch that gain in, that'd be veritable sliced bread.
What a beast of an amp. Thanks for all you do on your channel.
once played a twin reverb with some kind of high gain mod in a friends almost empty warehouse. needless to say it was absolutely glorious
Intro reminds me of going to see robocop as a kid in the dollar theater...thank you for that...
The Lindsey twins Evil twin mod slays! Nice work Brad! Was like watching a Frankenstein movie with you as the mad doctor creating life! LoL
Badass Brother. You're a genius and very talented. Although I own quite a few amps in my music room, I don't own any Fender Amps currently. Fender makes amazing amps, no doubt, just not for me. My favorite types of amps are Plexi's and Modded Plexi Amps....Friedman, Marshall, and Metropoulos, along with Soldano SLO's and a Mark V Series Mesa Boogie. My favorite amp Fender made, that is no longer available to buy is a Fender Prosonic with dual cascading gain. It was badass, sounded amazing, and was Fender's answer to Marshall. My favorite all time speakers to play through are UK Made Greenbacks.....The best speakers to play Plexi/Modded Plexi Amps through, imho. My favorite speaker cab combination is 2 UK Made Greenbacks on Top, with 2 Vintage 30's on the bottom. Combination of those 2 speakers sounds killer. Much Love and Respect From Sonny in New Orleans, Louisiana.
That jam at the end is fire
The amp sounded great but when you played along with the drums that was killer! Great job Brad.
Thanks Ron.
Damn Brad, that was some great playing at the end man...really enjoyed the entire video, your a genius with tube amps and can jam too. Thats awesome.
your demos at the end were great. massive tone.
Dude, your technical prowess is only surpassed by your musical talents. It's a pleasure to watch both, and for someone like me who has been with you since day one, the growth on the chops is very fun to follow. Whenever I see a cool lick or phrase from ANY guitarist I bookmark the video into a special folder so I can go back, watch it in quarter speed and figure out what's happening. I probably have a dozen of your videos in there so far. This one's going into the bin as well!
That's kind of you to say. Thanks! I can honestly say I am a better musician today than I have ever been, and I hope to keep improving until the day I die.
@@TheGuitologist \m/ O_o \m/
Holy Shit! Someone's been practicing them drums! this amp mod was cool, now it's a crazy good sounding amp. Great video Brad. Happy Holiday bud!
I cringed when you mentioned that you put "more robust" tubes in... was hoping that you didn't drop in 7027A's, as they can require wiring modification to the tube sockets. If going for a direct drop-in that is more robust than a 6L6GC (@35W per tube), go with 7581A's. I run a set of those in my 1978 Peavey Mace head, biased them up at about 60%, and it sounds glorious! I will say that the advantage of 7027A's is that they can withstand higher plate voltages, up to 600V per tube. Keep up the awesome videos, my man!! Love it!
They would work fine if I wanted to rewire that Pin 1 and Pin 6. But it's just too much to put in 4x terminal strips just for that purpose. Still kicking myself that I didn't see that Pin 6 tied to Grid 1. Really stupid oversight. Won't happen again, I assure you that.
@@TheGuitologist Oh yeah, they would absolutely work fine with just little bit of rewiring on the sockets, I 100% agree. Being as I've experimented heavily with output tubes and such, it just kinda made me cringe for a minute there when you put in the 7027A's, then you got "the pop" (arc over)... I've been there and done that too, man. It was an honest mistake. The amp came out top notch, and your drumming is solid!
Cool vid...I have a mid 70's Ampeg V2 that runs 7027A's...from what I've heard,the extra pin is to spread out or dissipate the heat which is good because they run at ridiculously high voltages on this particular model...the original Magnavox/Sylvania tubes are STILL running strong..a testament to the quality of those tubes
Pure joy those videos! Congrats from Brazil!
Glad you like them!
Best video in a long time! You were in your wheelhouse.
wonderful! I do miss these amp vids. Made my day.
awesome footage and very cool guitar ...
Great video Brad, really effective mods and a great demo. I wondered why the green 💚 screen behind you but watching the the Linsey twins playing drums and guitar though a truly Twin Reverb was priceless. Maybe another relative on bass? :) 👍
I’ve never opened an amp. The most I’ve ever done is pull a power tube. I just play ‘em. However, I do enjoy these videos. If it would ever come up, maybe I won’t be entirely ignorant on the subject.
You made a twin reverb sound very similar to my sovtek mig 100h when it's cranked. That's amazing! Great work man!
Glad you like it! Share with someone who has a Twin.
Nice one. Those have always been known as clean and loud. Nice mods.
I really love your playing Brad. You definitely have your own sound.
Great video. Thanks for the info. I’ll definitely incorporate some of the mods in my twin.
Excellent video Brad bloody epic mate! Even your intro video! Must have taken some effort to get even THAT sorted! Impressive!
Great bunch of mods you incorporated into that Twin Reverb, to give players rock concert levels of crunch & distortion at bedroom level volumes. Just brilliant mate!
I predict this video will get referenced by many guitar amp techs in the future!
Loved the sparking & farking arcing incident! Like seeing a thunderstorm going on inside the valve! Glad you caught that on video!
Masterful playing in the end demo too! Not only guitar but drums too? And then I'm sure I heard the warbling of a bass guitar as well! I don't even know the demo songs you were playing but geez they sounded great! And all at bedroom volume! Whohoo! 😃👍
You're a phenomenon!
Thanks for the kind words. I appreciate you watching, brutha!
Man that rig sounds huge , you ve really created an awesome mod. Very cool playing at the end.
Glad to see you in my feed again.
Holy mother of god......🤣 that one day an amp messiah will come...
has come, brad your percussion capabilities have elevated to that
whole other level, so yes i`ve enjoyed this a tiny bit 🙃😉👍
Thanks, Brad! Hope your Thanksgiving was a good one!
It sure was. A bountiful meal with the people I love most in the world...what's not to like?
@@TheGuitologistyou're winning friend!
Great job! Very interesting mods. The engineering part of my aging gray matter enjoyed this and you're taking time to explain. My SuperReverb has been modded a small bit, taking it from the silver face to a black face way of working. (Thanks to Steve W.) Will have to find your other video outlet. Thank you for doing this! Hope to run into you some day.
Nice vid! And I’ll check out those strings, been wanting to try my own custom sets, gonna have fun making a mix mash and see what works.
The Poltergeist living in my home
Could be a friend or foe
The Poltergeist living in my home
Could be a friend for life, or a foe until the night I die
King Diamond rules !!!
Stay heavy !!!! 🤟🤟🤟🤟
Awesome job, Brad!!! Can not wait to test out, thanks!😛😊
12:27 Original pots?! They don't make 'em Like that anymore. 😕
I bought a cheapie, low end Fender amp for practice a while ago and the pots started to go crackly after about a year or two of light use.
Oh, and I loved the "twins" playing at the end of the video!! 😃
Yes!!! Haven't watched it yet but I know this will definitely kick ass!
You know it.
Finally got through video after many usual life distractions. The cherry is you jamming at the end!
Keep it up bud!!
How would you say this modded twin fairs in contrast to the (evil) red knob 90s twin for it's drive?
I've owned 2 and love them for their growl.
Ps nice work on the skins!!
Great ending Jam!
Kinda really want one!😂 always loved those amps, and know ppl would mod em to sound heavier, didn’t know t could go that heavy! super cool mods man!
Hey Brad! Nice jam with your drummer buddy! Sounds great! Take care!
Thanks Brad for another great video.
Happy Holidays.
God Bless
i think ive just found the mods for my pro reverb 1970..great work brad
Stay tuned for the 'UNLOAD BOX!' I can't wait for 'Room Temperature super conductor speakers'! Talk about bliss. Imagine that sound of a '64 Gibson GA5 Skylark blasting a full stack!!!
Love the music!!!!❤ and amp thing also but your playing is beyond so many current bands Just Bravo!!!!
Thanks so much! Glad you dig it.
Total respect for your skills and talent !!!
Great video brad mis these type of vids. I build a amp for audio I'm running those 6n6c tubes there a great tube they were very cheap to purchase those soviet era tubes are well built so they could use them in military applications thanks bro hope all is good
Great to see you on UA-cam, I seem to struggle for bandwidth on the local stuff.
"Excellent video Brad 💯% awesome content again.*
I put a triode switch on my 70s Twin Reverb years ago. Worked quite well.
Great show dude love the shit you do ,keep up the good work
Outstanding!
I played Metal with a Twin Reverb w/ 15" speaker into fender 2x 15" cab. Maxon SD-1 distortion pedal in front. To my ears it sounded like Celtic Frost!
Thanks Brad!
Katzenjammerz! I think you covered all aspects and gave that Twin some usable options! My first amp was a '65 Twin back in 1978. If it was good enough for Johnny Funders it's plenty for me. It was loud but too clean so I had a Ratco Rat box.
Loved all those love ballads at the end Brad.
have you heard of Thunderous Fonzie
I remember Johnny Funder's Gang!
What a great video..I believe Ted Nugent would know a thing about Fender twin breakup...
Brad nailed it.
(That's what she said)
A joy too watch
I have seen those GE dry electrolytic caps in blackface Bassman and Bandmaster amps from the Mid-late 60's (circa 66-68). They could have been replacements from service back in the day but as you saw the date codes, seems to be period correct. Due for replacement fer sure regardless. Those xfmr brackets are pretty sketchy.....ya never know what you might run into.....I've seen worse and wielder things...keeps life interesting don't it!?. Good job! Cheers!
Awesome video! Thanks!
These are the videos I love!
I have a 6000a. Its been my workhorse for years.
Awesome
Loved watching this .
I have 2 red knob evil twins and they are fucking amazing. Rivera designed and they with peel paint off the walls one of the most beautifully underrated amps ever.
I swear I have ESP. The Guitologist pops into my head every once in a while so I do a search and sure enough there's a recently posted video. Good thing since UA-cam never sends me a notification.
I have numbers in mind for my videos and I have taken to refusing to post again until a video reaches that number.
Holy cow dude!!! I passed out after watching scar my guitar live show tonight woke up about the end of this video when you were showing some of the sounds the amp could do which are stellar and then all the sudden you start cranking at the end and I was like holy cow!!!😮 I've never watched one of your videos ever dude but I absolutely will be checking out your channel from now on!!! I'm super impressed with your playing!
Oh I recently picked up a '93 Blues DeVille... Will these mods work on it???
I'm going to go back and watch the whole video while I am awake lol.
Thanks for watching. Haven’t looked at the Blues Deville lately. Not sure what mods I’d recommend on that one.
The Guys Lonesome . He's got someone to talk with !
it sounds better on my speakers than "Keith Richards’ Amp Builder" Amplifier.
It's SO GOOD tp see endangered American Craftsmen working on GOOD OL' AMERICAN TUBE AMPS of Loveliness! LOVING IT!! I have a High-Powered TWIN I'd Love to do this to!! And DANG!!! It sounds HELLIFYIN' TOO!! Never had a Fender tht sounded quite like THAT!! But I want one! Nice JOB!!! Wonderin' what that set the custie back??? PS: Diggin' the red axe too. Stylin'!
Amazing stuff
nice work sounds great
Ive seen those GE caps in lots of fender amps . Always on youtube vids. But they were fairly common
Great originals at the end I enjoyed that.
I made such an aluminium strap on a 1975 sf twin (a little better I swear). the choke ears were broken and it was bouncing under the chassis. The customer played the amp in this condition several gigs before bringing it to my workshop. Funny story. Love your videos!
Thank you for another awesome journey into the world of classic tube amps. Btw 6п3с pronounce like 6p3s
Thanks for the info!
Ghost Brad!
...i dig the lights around the bass drum!
Thanks man! that LED light string was made for going around a cornhole board. It's been repurposed.
Marshall gain on a Twin Reverb. Pretty damn cool Brad. I also tend to install 1-ohm resistors on cathode to ground, especially on EL34s as they have a nasty habit of shorting cathode to ground when the tube craps out. The 1-ohm resistor has two functions. First it provides an easy measurement point for cathode current, like you said. Second, it works like a fuse, which you just provided a phenomenal example of. Better than burning up wires, resistors, etc. which does happen.
True on the fuse function. Many amps have actual fused cathodes on the output tubes, which is very nice indeed.
What an incredible sounding out that thing is. I wish my twin sounded like that when it was cranked up.😊
Quite the fire breathing Dragon you have created. And totally docile if you want as well. Pure Alchemy brother Brad...
I have ice cubes. I used them with my deluxe reverb for a clean boost and took the tank out. I used an adm 256 for verb and delay back then. I pretty much had a steel player rig but with a guitar and a Fender 1x12 instead of a Nashville 400. I was obsessed with learning steel parts but never got into the benders.
1:17:22 Nice drumming. I love how they played drums back in the days. There was so much going on.
Nice enjoyable video!
Hey, you kind of Rock pretty hard at the end there. I like it!
This is so awesome!
BRAD ! BRAD ! and You just finished saying you are not going to experiment with Your clients amps. I was pretty damn sure a 7027 is not the same as a 6L6. OMG so You in all likelihood destroyed a beautiful quad of 7027's !!!! AAAaarrrrggghh! Great way to sdestroy an Output Transformer !
Were you not entertained?
very Richie Blackmore... damn good ending to some nice work Brad
Dude, you are amazing!
Multi talent man love it.