Hi,

In a good sounding cranked amp if you hold a chord or note long enough a very clear feedback occurs, usually harmonically related to the notes your playing. Is there a technique to optimize or tune this besides massive gain? To tune this feedback to emanate from any chord or note you play.

My tweaked Vulcan can get this on almost any note or chord in a range.   My other high gainer effects seem to hit only 1 or 2 harmonic notes.

Regards,
Will

There's a trick that I use. Play a note, hold it and put your guitar in contact with your amp or PA or anything that your speaker are monted inside. The sound will pass in the body of the guitar, creating feedback. You can do this with a 386 amp too, hold the speaker against the guitar body. And you can control feedback with a wah pedal.

I haven't tried many, but there are some Jfet designs that reportedly make harmonics 'jump right out'.
 All these Dist, Booster designs produce or accentuate different harmonic content, of course combined with everything else you're using.
 I just gotta get more Jfets First.

Frank Zappa used to have an active parametric EQ built into his guitars to *tune* the  feedback and adjust for the difference between the empty hall at soundcheck and the full house. And of course there is *finding the spot* in relation to your amp. Sometimes like tuning in a distant station on rabbit-ears, others it's like you just opened a hydrant on a hot day and you are knocked down and soaked by it.

Kerry M