jim elshaw
New Member
Drummer by trade. Wannabe guitar hero.
Posts: 11
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Post by jim elshaw on Jan 11, 2015 12:46:16 GMT -7
I have a new Maz18 NR. Is it normal for there to be a pronounced hum through the speaker cab when the bypass switch is engaged?
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Post by zpilot on Jan 11, 2015 18:58:03 GMT -7
Are you using a switch with a shielded cable?
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Post by benttop (Steve) on Jan 12, 2015 6:16:48 GMT -7
Or is the cable laying next to something with a transformer in it?
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jim elshaw
New Member
Drummer by trade. Wannabe guitar hero.
Posts: 11
|
Post by jim elshaw on Jan 12, 2015 7:23:33 GMT -7
I'm using the switch that came with the amp. There is a flourescent light overhead.
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Post by benttop (Steve) on Jan 13, 2015 8:44:12 GMT -7
Try with the light off - does it still hum?
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Post by zpilot on Jan 13, 2015 13:59:27 GMT -7
If you are running your tone controls low then when they are bypassed there will be a large increase in gain. That will make any hum from the signal being inputted noticeably louder. Unplug the cable from the input and cycle the bypass footswitch to see if the hum is caused by the amp or the cables and guitar.
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Post by Jaguarguy (Mike) on Jan 13, 2015 14:22:00 GMT -7
Maybe it doesn't know the words?? Do you have a phone around it? That can cause humming. My TV remote causes my amp/guitar to hum.
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jim elshaw
New Member
Drummer by trade. Wannabe guitar hero.
Posts: 11
|
Post by jim elshaw on Jan 14, 2015 9:17:44 GMT -7
Thanks everybody. I moved my amp to another room to try a different circuit and that made a huge difference. I've got an old house with some electrical "gremlins" from time to time. The hum was occurring with no guitar plugged in btw so it's definitely something specific to the amp in relation to the power supply. Thanks again.
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