Gibson reverb driver transformer

garydue · 14th September 2007, 12:56 AM

I am restoring a Epiphone Glaxie same as a Gibson Scout GA17RVT. I need a reverb driver transformer. The driver tube is a 12ax7 & the tank is RV4c-1. Does anyone know where I can get a replacement or the primary & secondary values?
Thanks

HollowState · 14th September 2007, 01:58 AM

I don't know what RV4c-1 means, but this might work if your reverb input is low impedance.
http://cgi.ebay.com/Fender-Reverb-Dr...QQcmdZViewItem

Trout · 14th September 2007, 02:17 AM

Quote:

Originally posted by garydue
I am restoring a Epiphone Glaxie same as a Gibson Scout GA17RVT. I need a reverb driver transformer. The driver tube is a 12ax7 & the tank is RV4c-1. Does anyone know where I can get a replacement or the primary & secondary values?
Thanks

That part ismight be similar to one that Mercury Magnetcs sells for Gibson replacement parts.

Mercury is the premier transformer company for guitar amp transformers.

If it were me, I would go that route in this case, Yes it is a bit more money, But experience with previous transformers from triode tells me you only get what you pay for. My junk box contains several.

http://www.mercurymagnetics.com/pages/mainframe.htm

I would give them a call, If they do not have it, I know they would make you one.

Trout

Geek · 14th September 2007, 04:10 AM

Hi,

A trick that works good on Fenders (8-10 ohm tank input Z), maybe Gibson too, is using the 35/50C5 SE audio output transformers found in all sorts of el-cheapo line opped radios of yesteryear.

Cheers!

m6tt · 14th September 2007, 09:13 PM

on a whim repairing a hammond amp, I used a SE transformer from a 50c5 radio as the previous post mentioned. No problems so far and it sounds great. Just make sure the B+ that's getting fed in isn't like 500 volts or something crazy, mine is working fine (and oversized compared to the original), and that's at 295 v.

Geek · 15th September 2007, 12:02 AM

It's the ones with the 12AT7 drivers that get fed 450-500V or something insane, IIRC .... that's why they cook cathode resistors.

14th September 2007, 12:56 AM	#1
garydue diyAudio Member Join Date: Sep 2007	Gibson reverb driver transformer I am restoring a Epiphone Glaxie same as a Gibson Scout GA17RVT. I need a reverb driver transformer. The driver tube is a 12ax7 & the tank is RV4c-1. Does anyone know where I can get a replacement or the primary & secondary values? Thanks

14th September 2007, 01:58 AM	#2
HollowState diyAudio Member Join Date: Aug 2006 Location: Taxland, New Jersey	I don't know what RV4c-1 means, but this might work if your reverb input is low impedance. http://cgi.ebay.com/Fender-Reverb-Dr...QQcmdZViewItem __________________ "The human race is just a chemical scum on a moderate-sized planet orbiting round a very average star in the outer suburb of one among a hundred billion galaxies." ~Stephen Hawking

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14th September 2007, 04:10 AM	#4
Geek diyAudio Member Join Date: Sep 2004	Hi, A trick that works good on Fenders (8-10 ohm tank input Z), maybe Gibson too, is using the 35/50C5 SE audio output transformers found in all sorts of el-cheapo line opped radios of yesteryear. Cheers!

14th September 2007, 09:13 PM	#5
m6tt diyAudio Member Join Date: Aug 2007	on a whim repairing a hammond amp, I used a SE transformer from a 50c5 radio as the previous post mentioned. No problems so far and it sounds great. Just make sure the B+ that's getting fed in isn't like 500 volts or something crazy, mine is working fine (and oversized compared to the original), and that's at 295 v.

15th September 2007, 12:02 AM	#6
Geek diyAudio Member Join Date: Sep 2004	It's the ones with the 12AT7 drivers that get fed 450-500V or something insane, IIRC .... that's why they cook cathode resistors.

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