AMP FAIL ! :( - Jemsite
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post #1 of 5 (permalink) Old 09-21-2009, 10:06 PM Thread Starter
Join Date: May 2008
Location: Ireland / UK
Posts: 293

Argh !!!!

So my setup is working fine , i move it upstairs to a different room , rebuild , and its humming BAD. Tried different wall sockets , switched off all other appliances , not interference based. Tried a few guitars , not guitar fault.

Setup is charvel > isp decimator > ada mp1 3tm > g major > mesa 290 > mesa recto 2x12.

The decimator has always been set at midnight , providing perfect noise supression for higain patches. now with this extra humming i gotta turn it way up , no sustain.

The symptoms are weird too , its like my rig isnt earthed or is live or something ; when i touch the strings the hum quietens a little , if i touch the rack case surround or rack screws it also affects the hum - ive no idea what it could be , been working at it for 4 hours , HELP !
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post #2 of 5 (permalink) Old 09-21-2009, 10:54 PM
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Join Date: Apr 2002
Location: Fairfax, VA - USA
Posts: 4,613
Reviews: 18
Re: AMP FAIL ! :(

Go buy a HumX and see if it resolves the problem.

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post #3 of 5 (permalink) Old 09-22-2009, 12:17 AM
Join Date: Jul 2007
Location: Newcastle, Australia
Posts: 1,271
Re: AMP FAIL ! :(

Could it be a problem with the wiring in that room?

Maybe try running some extension leads from another room?

Good luck.

Rock on!
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post #4 of 5 (permalink) Old 09-22-2009, 07:58 AM
Join Date: Jul 2006
Location: Belgium
Posts: 677
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Re: AMP FAIL ! :(

Might sound stupid but you checked all cables on the back ? maybe there is a cable the has been pulled out some mm's.

Have you tried separate units on their own trough the 290 ? Or even your guitar in the 290 to isolate the humming bird ?
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post #5 of 5 (permalink) Old 09-22-2009, 10:20 AM
Join Date: Oct 2007
Location: Cleveland OH
Posts: 1,142
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Re: AMP FAIL ! :(

I'm guessing it's the wiring to that room but I'll second the suggestions from Pmike to try each thing individually and if there's any difference.
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