Sunfire Subwoofer Installation help needed

Easy Zen. The best and easiest hook up is to use the single ended(rca) preamp main output jacks to line input jacks on the sub. Still use your balanced from pre to pwr amp. This will send full range to the sub. Use the subs variable low pass filter to pick the frequency you want the sub to START playing at on down to the lowest note. Generally, this is just before your main speaks start to roll off. Your preamp will be the master volume and will raise and lower the sub along with your speaks. Pick the subs volume position based on how much bass you like. For phase adjustment, play something with a steady bass and listen from your main seating spot to the amount of bass at 0, 90' 180 degrees and so on. The correct position is where you hear the MOST bass overall from your listning position. The best place to start with a sub is to put it in the main listing position and walk around the room listning for the best blend of bass with your speakers(most invisible mix of sub and speaks) then switch positions. The subs output jacks are there if you wanted to run from preamp to sub, then sub to power amp. This is a true crossover that will eliminate your main amp from getting any bass below 65hz, therefore your speakers wouldn't get any bass below that mark and the sub would be the only speaker handling those frequencies. This can be usefull with small, wimpy speakers; helping them to play louder with lower distortion, but 98% of the time with any high quality speaker(yours are) your better off not using the crossover. Hope I helped. Mike

Thanks Mkfischer2000. I didn't think you could run both balanced and unbalanced at the same time from the preamp. I guess that is a lack of knowledge with out a doubt. I also thought that the sub had to be run directly into the amp. Again lack of knowledge too. It is a great feeling when you have a community with quality people like yourself whom can help issues at hand. Ok I guess I need to get an RCA end interconnect. I know where I get can a Kimber PBJ rather quickly. Will this work well in this application? Again thanks and I need to chill..........................

You will need 2 interconnects - one for each channel. You might want to start with something inexpensive, and long enough to experiment with placement of the sub. After you have determined where it sounds best, you can purchase a pair of better cables in the correct length. Good luck.

JD