re: still trying to track down a hum...

Posted by mr9iron (A) on September 18, 2012 at 14:08:34

In Reply to: re: still trying to track down a hum... posted by Tre' on September 18, 2012 at 13:46:52:

Tre,

yes, I was expecting the same result... but with both grounds off the RCA's, the amp is the same.. the real bad hum which you mentioned, will only occur if I disconnect the other end of the coax... and I have to disconnect it on both coax cables for it to do the big hum.. I know that sounds outrageous, but I kid you not, this is what is happening. I tried grounding the other end of the coax to other points on both sides, but no difference..

It sounds insane, I know, but that end of the coax is suspicious that it behaves like this. The path to the 12by is pretty simple and I can't see any other place it can ground.. I do think there is something up with the other end and not the end of the RCA's

It was suggested that I check DC voltage from all the grounds to chassis and the RCA grounds and the filter supply grounds all drop to "0" DC volts.. when I checked last night.

again I seriously thank you for your replies on my thread, I am losing all hope on this lately..

J

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Follow Ups Full Thread

Topic - re: still trying to track down a hum... - mr9iron 01:41:53 09/15/12 (16)

re: still trying to track down a hum... - Ron V 03:43:27 09/21/12 (1)

re: still trying to track down a hum... - mr9iron 14:18:17 09/21/12 (0)

re: still trying to track down a hum... - DannyR 12:10:52 09/19/12 (0)

re: still trying to track down a hum... - FenderLover 06:41:24 09/17/12 (1)

re: still trying to track down a hum... - mr9iron 10:45:20 09/17/12 (0)

re: still trying to track down a hum... - Tre' 07:07:06 09/15/12 (10)

re: still trying to track down a hum... - mr9iron 10:11:35 09/15/12 (9)

re: still trying to track down a hum... - mr9iron 02:05:33 09/16/12 (3)

re: still trying to track down a hum... - Tre' 13:46:52 09/18/12 (2)

re: still trying to track down a hum... - mr9iron 14:08:34 09/18/12 (1)

re: still trying to track down a hum... - Tre' 11:01:54 09/19/12 (0)

re: still trying to track down a hum... - Tre' 17:28:03 09/15/12 (2)

re: still trying to track down a hum... - mr9iron 20:19:30 09/15/12 (1)

re: still trying to track down a hum... - Tre' 07:37:29 09/16/12 (0)

Classic ground loop - Chris O 11:14:37 09/15/12 (1)

RE: Classic ground loop - mr9iron 20:25:51 09/15/12 (0)

Follow Ups

re: still trying to track down a hum... - mr9iron 14:08:34 09/18/12 (1)

re: still trying to track down a hum... - Tre' 11:01:54 09/19/12 (0)

re: still trying to track down a hum...

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