I recently purchased an SW-15 II powered sub to compliment my Heresy II's in my home theater. The problem I'm having is connecting it to my Sony STR-DE825 receiver (100w/ch x 5.1). The receiver has two "Sub Outputs", if I connect my Monster Sub Cable from one Receiver sub output to either Left or Right Side low level inputs on the sub, it seems to work fine (Note: however I do have to crank the volume of the sub up to 8-10 to get decent volume). Therefore, even this setup seems to not be 100% because I would assume that with the size of the SW-15 II it should take much volume at all to really feel the effects of the massive 15" woofer/passive radiator). However, the real issue is if I attempt to split or "Y" the input signal as I've read about to add approx. 6db, I get a very loud thud when the center pin of the RCA cable touches the other low level input and then the sub will not put out any sound at any volume. Could this be caused by my receiver not putting out enough signal to drive both inputs or is there an underlying problem with the subs amp??
Also, when I attempted to use the high level speaker inputs to see if they would perform any better, all I got was a constant hum????
Any help from the more experienced Klipsch Sub owners would be greatly appreciated. Happy Holidays and Happy New Year!
Or Should I give up and get a KSW-15 instead??