RE: One Channel Hum Affected by Volume

Posted by mr9iron (A) on April 1, 2025 at 00:10:50

In Reply to: RE: One Channel Hum Affected by Volume posted by JRMA on March 31, 2025 at 14:02:37:

JRMA,

Some of this is from my memory, but I believe the reason I reach that full useable volume at that spot, 2:00 -ish is just the physical characteristic of the new volume pot. If I re-call the original pot was more like you described.

The reason for this is because the new pot needs a good amount of clockwise turn to turn the power switch on. The new switch is "turn on -click" - not "pull on" like the original. By the time you click to "on" you are almost at 8-9:00 already with no volume.

So if my memory is right, this would put the "lag" just about where you are stating your volume is. I also think if I re-call, with very inefficient speaker load, 12:00 would be the absolutes max it could run and with efficient loads, right about where you are stating. So I think it's just a physical positioning thing.

Yes we can compare notes, I hope to have more to report...

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Follow Ups Full Thread

Topic - RE: One Channel Hum Affected by Volume - mr9iron 13:46:23 03/30/25 (19)

RE: One Channel Hum Affected by Volume - mr9iron 15:31:46 04/15/25 (0)

RE:UPDATE- One Channel Hum Affected by Volume - mr9iron 15:31:38 04/15/25 (0)

That is a ground loop. You have a cold ground joint somewhere. nt - Chip647 12:01:59 04/01/25 (2)

RE: That is a ground loop. You have a cold ground joint somewhere. nt - mr9iron 12:26:34 04/01/25 (1)

RE: That is a ground loop. You have a cold ground joint somewhere. nt - Chip647 14:30:23 04/01/25 (0)

RE: One Channel Hum Affected by Volume - mr9iron 00:32:57 04/01/25 (0)

RE: One Channel Hum Affected by Volume - JRMA 12:04:43 03/31/25 (6)

RE: One Channel Hum Affected by Volume - Paul Joppa 14:16:43 03/31/25 (0)

RE: One Channel Hum Affected by Volume - mr9iron 13:03:02 03/31/25 (4)

RE: One Channel Hum Affected by Volume - JRMA 14:02:37 03/31/25 (3)

RE: One Channel Hum Affected by Volume - mr9iron 00:26:39 04/01/25 (0)

RE: One Channel Hum Affected by Volume - mr9iron 00:10:50 04/01/25 (0)

RE: One Channel Hum Affected by Volume - mr9iron 14:17:04 03/31/25 (0)

RE: One Channel Hum Affected by Volume - walge 07:26:53 03/31/25 (4)

RE: One Channel Hum Affected by Volume - mr9iron 00:21:15 04/01/25 (2)

RE: One Channel Hum Affected by Volume - walge 04:02:04 04/01/25 (1)

RE: One Channel Hum Affected by Volume - mr9iron 12:22:28 04/01/25 (0)

RE: One Channel Hum Affected by Volume - mr9iron 13:07:49 03/31/25 (0)

I would try to adjust the R41 (or R141) trimmer... - cellailuca 03:27:09 03/31/25 (0)

Follow Ups

RE: One Channel Hum Affected by Volume - mr9iron 00:10:50 04/01/25 (0)

RE: One Channel Hum Affected by Volume

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