Simple high-pass filter for guitar?

[bobshbob1]

Hey all, I've got a simple question regarding a rather unusual guitar setup. It's for a noise-punk band I play in, where the goal is to have the guitar be as harsh and treble-y as possible, like if you can stand in the same room as the guitar without earplugs, something is wrong.

Current setup is guitar through three distortion pedals into an A/B/Y box, with one output going to a 6505+ half-stack and the other going into a Peavey Mark VI bass head with no speakers connected, then from the high-frequency output of that (HPF set around 1.5kHz) to a small PA head, which feeds 2 speaker cabs, each consisting of 6 piezo tweeters. It'll make your ears bleed.

Anyway, we used to blow tweeters all the time feeding them a full-range signal (luckily replacements are only $2 apiece), so the Mark VI is being used for high-pass filtering, because it's the only high-pass filter we have access to currently. It's been working out great, but obviously it seems like a waste to drag a whole extra amp to gigs just to use as a high-pass filter.

I'm looking for a simple, cheap alternative but am not sure how to go about it. I'm imagining just making a simple R/C circuit in a RadioShack project box, but I feel like it might require something more complex than that. Decreased signal level is not really an issue; the tweeters' amp is set with the volume less than "1" now and it's unbearably loud. Noise imparted to the filtered signal is not really an issue either; at this point the guitar is close to white noise anyway. Something passive would be preferred but not really necessary.

Suggestions and advice would be very much appreciated, thanks in advance!

[Enzo]

Graphic EQ in the FX loop of the 6505.

A Danelectro Fish n Chips pedal might do it for $30 with its 8 bands. But a rack unit might get you better resolution.

Meanwhile, a solid state amp won;t care about piezos, but your 6505 will not be happy driving only piezos. It wants a proper load.

So another idea might be to make a dummy load with a crossover for your horns. You could still use piezos, or at that point evn a compression driver and horn.

[rjb]

Graphic EQ in the FX loop of the 6505....

Enzo, why are you encouraging this deviant behavior?