I've been wondering about something, though right now it's more of a matter of theory for me than anything else. I've been trying to put together a stereo/biamp rig so I can run FX out of a "high" speaker while keeping the low end clean and dry. Some bass players who use a lot of distortion (courtesy of effect pedals, processors and the like) play through bi-amp rigs so they can run the distortion out of the high-end speakers while keeping the low end dry (thus preventing the loss of low-end presence associated with distortion,) correct? However, it's generally recommended that you turn your cabinet's tweeter off/all the way down when using distortion. So, if you bi-amp and intend to use distortion, you have to send your "high" amp signal to a cabinet with no tweeter or a disabled tweeter. But what if you want to use your tweeter when you switch off your distortion, to regain the high end response it adds? Since it's impractical to turn your tweeter down when using distortion and back up again when you switch back to clean mode, is there any way to quickly switch the tweeter on and off when you want to go into overdrive? I had one idea for a compromise, but I'm not sure how it would work. Since the cab I'm using for low end might have a tweeter, which would be rendered useless, what if I sent the MIDS to the "right" (wet) side of the rig, while sending a purely high/low signal with the midrange filtered out to the "left"(dry) side? Using cabs with tweeters, wouldn't the internal crossover in the "left" cabs send the treble to the tweeter and the lows to the woofer(s)? For example, say I have a 1x15w/tweeter for lows and highs and a 1x12 for mids. I send the "scooped mid" signal to the 1x15, and the "mids only" signal through the FX to the 1x12. Problem is, I can't comprehend an easy way to do this. You would need to split the signal from your bass in two, running one through a High AND a low pass filter (like the filter/crossover in the yamaha PB-1 preamp, which lets you cut out the mids entirely if you like,) and merge them back together. You could simply run the other through a mid-pass filter. I think it could work if you had two Alembic SF-2's, but that's not very cost-effective. Sorry if this seemed like the incoherent ramblings of an insomniac madman, but this has been bugging me. If you can get the basic gist of what I'm saying, can you offer any suggestions?