I am a newbie to the world of HT. I just recently purchased a 5.1 capable DVD player to hook into my older Sony DD "ready" receiver. I know it's not the ideal situation but... I am running Klipsch KG .5's as fronts and surrounds. Freq response is 60Hz-20kHz±3dB. I have a KV 1 center - 85Hz-20kHz±3dB. My most recent addition is a Velodyne DLS 3500 - 34Hz-140Hz (living in an apartment sucks). I have some questions on setup between these speakers and the sub. My DVD player (Mitsubishi 8040) has settings for large and small speakers. They (instructions) define large as being able to play sub 100Hz. So I set my fronts and rears to large and left the center on small. I set the DLS low pass at 80Hz. Does this sound correct or should I set all the speakers to small? If I change them to small, do I need to readjust the crossover on the sub to about 100? I couldn't find any specific info on the DVD player that tells me what the crossover is when they are on small - I'm guessing 100Hz. Second. I seem to have a bass dead spot and it is, lucky for me, right where I sit. I know that it is most likely a factor of room/furniture. The odd thing is the sound really comes alive when you stand up. Everything seems smoother and deeper. The best response seems to be in about a 5-7 foot arc from in front of the sub, only while standing. The sub is on the floor in the front of the room. I linked to a drawing of the room- more info is better than none, right? Light Blue are the KG's, pink the KV, red the Velodyne. In its current spot, it is aiming at a couch. I moved it to the yellow circle in front of the fireplace and oriented it every way I could and it never cured the problem. Sitting the sub on its side seemed to help a little. Changing the phase didn't make any difference to my ears. I just can't believe how great it sounds 3' higher! The room is on a carpeted slab with another unit above, 8' flat ceiling. I still have some spots to try it in - and some furniture to move around but I thought I would toss the question out to see if it's something glaringly obvious. home.hiwaay.net/~lbrewer/images/setup.JPG Any help on either of these issues would be greatly appreciated.