Leslie 32H Amplifier Fix
October 13th, 2014 posted under Amps.Beautifully made Leslie 32H amplifier was in the shop for new capacitors and a clean-up. This has 4x6L6’s and two rectifier tubes.
Pictures from The Bench
July 28th, 2014 posted under Amps, Effects, Other Stuff.
Sure we love hand-wired amps, but this Marshall 1959 100W Super Lead is a great example of how PCB’s can be done nicely.
Fostex PH-50 headphone amp came in to get some pots and jacks fixed.
New tubes and biasing a Fender blackface Deluxe Reverb.
I rebuilt this pre-war National amp that came in very rough. The outside is still very rough, but now it sounds great!
Krank amps Krankenstein with a nice hand written “dimebag rules” message hidden inside.
This was a customer-built Dumble clone that came in for a check over.
A customer wanted to use his old 16MM projector as a guitar amp, so we added a switch to turn off the projector’s motor.
Tube retainers added to a silverface Princeton Reverb, these tubes ain’t goin’ nowhere now.
Gibson Medalist 4/10 in the shop!
June 24th, 2014 posted under Amps.This was a very interesting amp to work on. The Gibson Medalist 4/10 is a very big amplifier with four 10″ speakers and has the power amplifier and transformers at the bottom of the cabinet. At the top of the cabinet is the pre-amp section with reverb and tremolo and then as a 3rd separate unit is the control panel located at the top. Each of these 3 sections is connected with a large connector and bundles of cable, similar to a jukebox or pinball machine even.
Made only a few hours from here in Kalamazoo Michigan, this amp is beautiful and sounds great once the work was completed on it.
The best part about this amp is that it goes to 12, that’s two louder!
Gibson GA-40
April 18th, 2014 posted under Amps.
This beautiful Gibson GA-40 came in barely working, lots of buzzing hissing and crackling. After opening it up, there was a few large power capacitors that had leaked black goop all over the inside, including coating the rectifier tube socket.
We replaced all of those capacitors with Sprague Atoms.
Most of the other capacitors in the amp were shot, a few were split right in half. Those were replaced with Mallory caps, and a few cold solder joints were fixed.
After giving everything a clean, the amp sounded amazing with great deep tremolo.
Rivera designed Fender Concert fix
March 27th, 2014 posted under Amps.This Rivera designed Fender Concert came in for new power tubes and biasing. After opening it up to give everything a check over, we noticed a large piece of metal floating around in the chassis! We removed this before it could be come a (very messy) problem. Once everything was cleaned up and biased, the amp sounded great. This is a point to point handwired amp, but a very complicated design with tube driven effects loop and channel switching. We also replaced a fraying power cord with a new one, just to make sure our customer stays alive to enjoy his killer amp.
Dusty Mesa-Boogie with blown-up preamp tube
March 27th, 2014 posted under Amps.This Mesa-Boogie Nomad came onto the bench because one of the Master Volume knobs wasn’t working. After replacing the potentiometer, we noticed a blown-up preamp tube and replaced that. The inside also got a nice cleaning and so did all of the potentiometers and jacks. The amp sounded killer, very well designed inside.
