Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: chocopower on October 30, 2009, 06:36:03 am

Title: Reverb transformer for Gibson GA19-RVT Falcon
Post by: chocopower on October 30, 2009, 06:36:03 am

Hello from Spain!

Could i use an standard Fender reverb transformer in a Gibson Falcon like this:

http://www.schematicheaven.com/gibsonamps/ga19rvt.pdf (http://www.schematicheaven.com/gibsonamps/ga19rvt.pdf)

The original trafo is marked in another schematic as "TF-E-6400"
Regards from Spain!

Title: Re: Reverb transformer for Gibson GA19-RVT Falcon
Post by: sluckey on October 30, 2009, 06:44:56 am

I think so.

Title: Re: Reverb transformer for Gibson GA19-RVT Falcon
Post by: chocopower on October 30, 2009, 06:59:44 am

Mercury Magnetics have an original replacement, but i think 40$ is pay too much for a reverb driver....

Title: Re: Reverb transformer for Gibson GA19-RVT Falcon
Post by: HotBluePlates on October 31, 2009, 06:22:41 am

Could i use an standard Fender reverb transformer in a Gibson Falcon like this

Sure you can.

Title: Re: Reverb transformer for Gibson GA19-RVT Falcon
Post by: LooseChange on October 31, 2009, 06:37:48 am

Yes, you can use the Fender type.

I've got the same amp. It was a mess and I completely refinished it.
Can you post a picture?

Title: Re: Reverb transformer for Gibson GA19-RVT Falcon
Post by: chocopower on April 13, 2010, 10:41:03 am

Sorry.. i just have seen you reply right now..... :embarrassed:

here are the pics:
(http://lh3.ggpht.com/_dDky4c4dYsQ/S8SPiIkSlUI/AAAAAAAAAFc/dV6OPzsHv7c/s912/DSC02334.JPG)

(http://lh6.ggpht.com/_dDky4c4dYsQ/S8SPiypWOiI/AAAAAAAAAFg/BA8uTGrLsbQ/s912/DSC02335.JPG)

(http://lh4.ggpht.com/_dDky4c4dYsQ/S8SPjobt2JI/AAAAAAAAAFk/YW8iX29_wng/s912/DSC02336.JPG)

(http://i101.photobucket.com/albums/m74/chocopower/IMG_0009-2.jpg)

(http://i101.photobucket.com/albums/m74/chocopower/IMG_0008-1.jpg)

(http://i101.photobucket.com/albums/m74/chocopower/IMG_0007-2.jpg)

The only mod i have done to this baby are the usual safety ones and rise the P.I. coupling cap from 500pf to 1000pf. The original one is perfect for humbuckers, but  i use it with a Jazzmaster and need the extra punch.
Next time i opened it (what a nightmare!!) i have the idea to install a "fat" swicht to change betwen the two values (two 1000pf caps in series, shorting one of them with a swicht).
Amp was found in rubish for a friend of mine. No speaker. RCA 6V6 inside. After the cap job and others minor works is working like a charm with a Weber 12F150. Original 6V6 are ok too. 270 ohm bias resistor rise his value to 800 ohm, so bias was so cold that keep the tubes in a good condition.

Title: Re: Reverb transformer for Gibson GA19-RVT Falcon
Post by: duke of earl on April 19, 2010, 10:29:41 pm

I have one of these in great condition with the original speaker. It sounds beautiful!