guyatone ga-960 reverb question

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9 volt
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Post by 9 volt »

Hi there, I'm restoring a guyatone ga-960 black5. So far so good. The problem is that the reverb volume is as loud as the volume coming through each channel. The reverb signal also sounds like it is getting all the frequencies that are going through the channel. I figured the input capacitor may be blown 500pf, but then that would also leak hum from the b voltage......I can post a schematic. Just wondered if anyone had thoughts or had experienced this. It is from the early sixties, maybe this is how it was designed? Thanks in advance.

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9 volt
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Post by 9 volt »

schematic

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lead2203
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Post by lead2203 »

9 volt wrote:Hi there, I'm restoring a guyatone ga-960 black5. So far so good. The problem is that the reverb volume is as loud as the volume coming through each channel. The reverb signal also sounds like it is getting all the frequencies that are going through the channel. I figured the input capacitor may be blown 500pf, but then that would also leak hum from the b voltage......I can post a schematic. Just wondered if anyone had thoughts or had experienced this. It is from the early sixties, maybe this is how it was designed? Thanks in advance.
Remember it's not a Fender reverb....look at the schematic........this one goes around the tone stack and channal volume so the reverb knob is more of a volume for the reverb independent of the channel volume.....you can leave the channel vol off and just play through the reverb only. It's also a darker and deeper reverb not as bright as the Fender

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Post by 9 volt »

thanks, that makes sense. It actually sounds great (60's style ), but i wanted to clarify that it was working like it should. Thanks again

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The tremolo works but causes the pilot light to flash in time with it. Is this normal?
Last edited by 9 volt on 06 Nov 2020, 05:55, edited 1 time in total.

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pulsar000
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Post by pulsar000 »

Hi,
I'm trying to restore a GA-960 too.

Can anyone re-post the schematic again, please?

Thanks in advance

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