-----Original Message----- From: Jerry Volpe Sent: Thursday, May 25, 2006 2:35 PM
My second project began with the following in mind: 1. Using band-pass filters rather than low-pass and high-pass. 2. Include the ability to move the combined filter cross-over for different CW offsets. 3. Get the lowest distortion possible in the filtering. 4. Use something commercially available rather than 'build your own'. --------------------- There is an easy way to do this with commercial gear. Get a pro sound crossover unit. Behringer (*spit*) makes some for about $100 new, maybe less. It gives you the ability to adjust the crossover frequency plus other features you probably don't need. Most of these are 18 or 24 dB per octave which may cause rather abrupt shifting of signals from L to R. Feed the audio signal into the unit, pick your crossover freq. Feed the high & low outputs to your headphone amp, one to the L, the other to the R. Maybe I'll borrow the Xover from church and try it with my mini headphone amp... - Keith KD1E - - K2 5411 - _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
