| hum [message #6754] |
Thu, 09 March 2006 22:47  |
smittycat
Messages: 4
Registered: March 2006
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Junior Member |
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I have a late sixties kustom 150-6 it has a hum that starts as you increse the volume
is this normal ?.
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| Re: hum [message #6776 is a reply to message #6754] |
Tue, 14 March 2006 07:50  |
stevem
Messages: 4775
Registered: June 2004
Location: NY
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Senior Member |
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If you only have a hum issue when pluged in , and it stops when you turn down the guitar, then it is the guitar picking up stray a/c sourses.single coil pickups or humbuckers with a coil tap position will do this.The induced hum could be from the amps own power transformer located on the right side as you face the front of a kustom, it could be from floresent lights, or a light wall dimmer on the same circuit as you amp is on.If it does it with the guitar turned down than its a cord problem.I find a lot of kustoms and other amps that have had a three prong cord put on have a buzz, not a 60 cycle hum like you hear when you walk by a ground level transformer,like out side a building. but a buzz. Most times this is due to the new plug being wired wrong. If you put on a ground lift adapter that you have clipped the wide prong down to match the slim one, the buzz should stop, but you will be ungrounded again so watch it if you are using a mic, or something into another item of gear.its not a bad idea to get one of those testers that you just plug in to confirm that, indeed the outlet you are using is grounded right.ALOT are not, like in your average small bar/club.
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