Post by extsepete on Jul 8, 2022 12:22:39 GMT
That pic seems to have been removed now - thanks, Bigman.
Post script to my John Shearne amp mod - I see that the two speaker ground wires are routed underneath the PC board, parallel to the ground track I added the jumper to. The hum is probably induced here somehow. Re-routing the two speaker ground wires in free air above the board may be another way to fix the problem
Post script to my John Shearne amp mod - I see that the two speaker ground wires are routed underneath the PC board, parallel to the ground track I added the jumper to. The hum is probably induced here somehow. Re-routing the two speaker ground wires in free air above the board may be another way to fix the problem