Re: [Harp-L] feedback nightmare

["Dave Murray" <dlmurray@xxxxxxxxxxxxx>]

> i play through a danelectro centurin my mic is a blues blaster,i always get
> miced . i dont always have this problem but last night was bad.my firsy
> question is does the feedback come from the amp or does it start from the 
> PA ?? what
> are some ways to resolve this problem???

A technical explanation of feedback:
http://www.tpub.com/neets/book8/30e.htm

Electronic solutions aimed at reducing the amplitude of the offending 
frequency.:
Tunable notch filters (less loss of frequencies adjacent to the feedback 
frequencies)
Adjustable equalizers (not as sharp/more loss of frequencies that are not a 
problem)
Tone controls (large change to the overall sound)

Electronic solution aimed at changing regenerative feedback to degenerative 
feedback:
Phase inverter.

Acoustic solution:
 Get your mic away from the speaker.
 Directional mic

Obvious solution:
 Turn that #@$%&* thing down :0)

Peace and music,
Dave