Hum with a G series and TP4T preamp

Rich from Milwaukee

Is this normal or should I have the dealer look at it? Confused

Rich from Milwaukee

PS 1st message

maritimer · Posted: Thu Dec 28, 2006 5:25 am Post subject:

The hum can come from many different things, other than the guitar / preamp. The circuit your amp is plugged into can be loaded (60 - 80% of full load amperage rating of your circuit breaker) and that can give feedback / hum. Flourescent lights, computer, TV nearby, can all give hum. A power supply transformer plugged in the same outlet can do it also, bad grounding in the amp and / or outlet. Try to plug the amp and guitar in an outlet in a room that has nothing else on or in it electronic / electric. If it;s still there, maybe then look at the guitar. Post how you made out after trying some of these.....

Rich from Milwaukee · Posted: Thu Dec 28, 2006 7:52 pm Post subject:

I have used, in the same PA, a Taylor with Fishman stereo blender and a Martin with thinline transducer with no hum. The hum also increases in proportion to how much the volume pot is turned up.

The PA has a 3-position power switch. I will try it in the other position also.

RfM