This file of hum samples might help diagnose the problem: http://www.fileconvoy.com/dfl.php?id=g693bae6309b156e01000475909cd24afe4142c... The first is 60hz. It is lower pitched and generally associated with inadequate shielding or heater-cathode leakage in a tube. In an amp, this can be before or after the volume control The second is 120Hz. This represents either inadequate filtering of the DC supply, or an excessive load on it that exceeds the filtering capacity. RobNYC On Wednesday, January 25, 2023, 09:00:04 PM GMT-5, Jamie McElroy via Jukebox-list <jukebox-list@lists.netlojix.com> wrote: Hi Jay, Thanks for your reply. It doesnt seem to affect it. On Wed, Jan 25, 2023 at 3:21 PM Jay Hennigan via Jukebox-list < jukebox-list@lists.netlojix.com> wrote:
On 1/25/23 10:07, Jamie McElroy via Jukebox-list wrote:
Hello all, I recently rebuilt my AMI G-80 amplifier. I replaced all the capacitors and Ive noticed that I am getting a little humming from my speaker and a little squelchy noise from time to time when my records play. Does anyone have any thoughts?
Does the volume control affect the volume of the hum?
-- Jay Hennigan - jay@west.net Network Engineering - CCIE #7880 503 897-8550 - WB6RDV
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