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I can see how a cable could affect feedback - the capacitance is different in each cable type - and that means the freq response of the cable changes also, and its effect as a filter can change, possibly eliminating the offending freq. Not so far fetched.

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Tony Karol
www.karol-guitars.com
"let my passion .. fulfill yours"

I was going to say that Tony...THANKS! I was also thinking about how some cables become microphonic and pickup a lot of "other" outside signal which may be a factor? As I said orginally..." It may sound wierd but these guys swear to me it's true". I never said it was the cure.

Nelson, Did you call Gerald or Lindy? Just wondering what their take on it was.

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Dave Bland

remember...

"If it doesn't play in tune...it's just pretty wood"

I've read that cables do behave as capacitors, and different cables have different values. Why do they say that a capictor is "microphonic"? Because a microphone is a...um,er...microphonic capicitor.

Capacitors can act as very high frequency filters - ever see the inside of a radio ??? when you are turning the tuner dial, a series of plates move in and out of each other like fingers - thats a variable capacitor - its tuning the frequency of the receiver circuit.

_________________
Tony Karol
www.karol-guitars.com
"let my passion .. fulfill yours"

[QUOTE=DaleH]
I don't know if controlling the vibration of the plates would help in any way. Frequencies are effected by so many different sources that you would have to have a very flexible method of controlling them to be practical. Everything from the temperature to the amount of people in a room can effect the sound of an amplified instrument.
[/QUOTE]

Your right Nelson, I'd have to rephrase that. I don't think that controlling the vibration of the top plates would be a practical way of controlling feedback. Just my opinion, but I think you would be changing the dynamics for the worse. When you use a lute hole or soundhole insert your robbing the feedback of it's source, when using an eq or notch filter your altering the single frequency that is the source. It seems to me that changing the way the top plates vibrate would dampen your sound to much giving an un-natural sound. Though Gibson made a pretty popular model that did both. The Chet Atkins SST controlled the top plates & blocked the sound hole. I don't know if your familiar with it, but it was basically a chambered solidbody with a piezo pickup & a spruce top. I guess it sounded...ok plugged in, but nothing to brag about. Again my opinion.