vuki :

I tried your hi pass XO section with my 605s , and it sounds great . What did you use for the coils ?

Todd:
Thank you for the Vocal Master plug . Limited BW, yes ," VOCAL " , everyone else has an amp and speakers. BTW to sound right they must be driven by a Shure : VA300, VA302 or PM300 , all of wich are current amplifiers. YES one VOLT in produces one AMP out. This makes the AMP into a equalizer, the output voltage follows the column impedance curve.

Don