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Amp head and Cabinet giving too much feedback?
I just bought a Marshall MG412 amp cabinet to go with my Behringer amp head. It sounds fine at low volumes but when I turn it up it gives back a lot of feed back even when I have my hand resting on the guitar strings. I was just wondering what would be the best speaker cables to get so I can eliminate the feed back or what do you think it could be.
High-pitched feedback usually means your pickups are microphonic (or acting as a microphone). Single-coil pickups are more prone to this type of feedback.
If you are using a semi-acoustic guitar, this may be causing feedback through the F holes. Some guitarists stuff the holes with foam or other sound-absorbent material.
It's not your speaker cable. That's doing exactly what it's supposed to do. Try adjusting the tone settings on your head to match the type of feedback your getting (e.g., if high-pitched, then roll back a little treble, etc.)
Stand away from the amp (to one side) and facing away from it, may also help. Also, if you're using a compressor, the sustain may be set too high.
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