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September 23, 2020, 08:57:00 PM

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Author Topic: in search of GBX GD1 preamp and 4123GS guitar amp schematics  (Read 354 times)

rayz1

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in search of GBX GD1 preamp and 4123GS guitar amp schematics
« on: August 14, 2020, 10:08:37 AM »
These components ended up in my hands. Looking to install into a gutted Fender XFL 1000 cab and repower. There is a slight hum that I would like to resolve. May be power supply caps in the preamp, but need information to troubleshoot. Any help finding information on these would be appreciated.

g1

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Re: in search of GBX GD1 preamp and 4123GS guitar amp schematics
« Reply #1 on: August 14, 2020, 02:37:08 PM »
Here they are:

rayz1

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Re: in search of GBX GD1 preamp and 4123GS guitar amp schematics
« Reply #2 on: August 15, 2020, 11:03:54 AM »
Thank you very much. I will let everyone know how this works out