Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Scsoul on August 03, 2019, 02:33:06 pm

Title: Gibson exaplore ga15rvt
Post by: Scsoul on August 03, 2019, 02:33:06 pm
My 15rvt reverb was being awful noisy when I checked the re erb transformer which has 2 clip that connect the transformer to the pan those clips on to of trany had slipped right out of the reverb transformer  i do have some fender reverb tranys  on hand wondering if I can just use them
Title: Re: Gibson exaplore ga15rvt
Post by: sluckey on August 03, 2019, 02:59:29 pm
The GA15RVT schematics I can find don't have a reverb transformer. Can you post a schematic of your amp? Better yet, post a pic of the actual reverb transformer.

Title: Re: Gibson exaplore ga15rvt
Post by: Scsoul on August 04, 2019, 03:48:43 pm
Cant seem to post a pix but mines the exsplorer it has a choke and  a trans for the phase inverter and the reverb trans plus pt and opt. 5 transformer, I'll look for correct schamatic,  and figure how to post a pix
Title: Re: Gibson exaplore ga15rvt
Post by: shooter on August 04, 2019, 03:54:51 pm
Quote
figure how to post a pix
keep file size below 1024k
email it to yourself 1st - usually gets resized, use a image viewer that allows for resizing
Title: Re: Gibson exaplore ga15rvt
Post by: sluckey on August 04, 2019, 04:15:25 pm
I believe you. Gibson is well known for lack of technical documentation. I can find pics of your amp but I cannot find a proper schematic. Without a correct schematic it's just a WAG if the fender transformer will work. Can you draw a simple schematic that shows the driver tube and it's connection to the transformer?
Title: Re: Gibson exaplore ga15rvt
Post by: Scsoul on August 04, 2019, 04:36:03 pm
This one I think
Title: Re: Gibson exaplore ga15rvt
Post by: sluckey on August 04, 2019, 04:54:18 pm
Nope.


Nope.


Are you Mark Enger?

Title: Re: Gibson exaplore ga15rvt
Post by: 2deaf on August 04, 2019, 04:59:19 pm
This one?

Title: Re: Gibson exaplore ga15rvt
Post by: sluckey on August 04, 2019, 05:13:08 pm
Where did you find that?

Title: Re: Gibson exaplore ga15rvt
Post by: 2deaf on August 04, 2019, 05:22:05 pm
Where did you find that?

I have a folder on my computer where I collect schematics that I haven't seen before.  Somebody somewhere around the forums posted that, but I've long since forgotten who.

Looks like a Fender reverb transformer will work as long as it's driving an 8 Ohm tank.
Title: Re: Gibson exaplore ga15rvt
Post by: shooter on August 04, 2019, 06:18:03 pm
Quote
I have a folder on my computer
just updated my folder, thx  :laugh:
Title: Re: Gibson exaplore ga15rvt
Post by: davidwpack on August 04, 2019, 08:35:56 pm
Is T3 an interstage PI transformer?
Title: Re: Gibson exaplore ga15rvt
Post by: Scsoul on August 05, 2019, 07:23:07 am
 Yeah Steve its mark, and yes this thing does have trans for a pi. Thanks guys
Title: Re: Gibson exaplore ga15rvt
Post by: sluckey on August 05, 2019, 07:53:39 am
That schematic has been added to Hoffman's schematic library. THX 2deaf.