Home » VintageKustom.com » Repairing Kustom Amps » Kustom Bass III Channel 1 Hiss (extreme amount of hiss on channel 1 board (PC5127))
Re: Kustom Bass III Channel 1 Hiss [message #28691 is a reply to message #28683] Fri, 22 July 2022 12:48 Go to previous messageGo to previous message
thespeakerport is currently offline  thespeakerport
Messages: 11
Registered: July 2022
Junior Member
One thing I did notice is that Channel 1 loops through Channel 2. Tracing the output of Channel 1, i see that it feeds into pin 6 on the IC on Channel 2 via a 220K resistor. I completely eliminate Channel 2 contributing to this issue, I jumpered the output of channel 1 directly into the power amplifier board essentially bypassing Channel 2 altogether. I still get the hiss...so it is definitely from channel 1.
 
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