GK 800RB Schematics for initial plus 2 redesigns

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
I have been dealing with some noise with my 800rb and so I have done some research. I found some schematics on this site, but I also found a service memo that got me a bit confused as the pots didn't seem to match what was inside my amp.

So, after a bit more looking I found that there have been a few redesigns for this amp. I have attached schematics from 1982, 1991 and 1992. I haven't looked at the differences between 91 and 92, but 82 is notable as it uses a single pot for the hi/low crossover whereas the 91 and 92 use 2 pots ganged together.

Hope this helps someone. It sure helped me.
 

Attachments

  • 82 - power amps.jpg
    82 - power amps.jpg
    303.4 KB · Views: 167
  • 82 - power supply.jpg
    82 - power supply.jpg
    260.6 KB · Views: 138
  • 82 - preamp.jpg
    82 - preamp.jpg
    337.9 KB · Views: 166
  • 91 - power amps.jpg
    91 - power amps.jpg
    333.5 KB · Views: 129
  • 91 - power supply.jpg
    91 - power supply.jpg
    192.2 KB · Views: 121
  • 91 - preamp.jpg
    91 - preamp.jpg
    288.1 KB · Views: 91
  • 92 - power amps.jpg
    92 - power amps.jpg
    343.5 KB · Views: 94
  • 92 - power supply.jpg
    92 - power supply.jpg
    193.6 KB · Views: 74
  • 95 - preamp.jpg
    95 - preamp.jpg
    356.1 KB · Views: 96
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.