does a subwoofer kill stereo sound?

I can never get why people buy very expensive top shelf amps and then let the bass be done by amps built into the subwoofer cabinet. Is that really the best way to do things? Or do most people have a really good amp to run the subs too? How about using a seperate amp and preamp to run a subwoofer system?

As a side note, I have caught a dealer demoing SET amps but had a powered subwoofer playing hidden behind some other speakers. I am getting very good at detecting bass that should not really be there. I can tell if a subwoofer is in the system and it usually annoys me too much. imo, a sub is not really needed if you have great full range speakers AND the room to support low HZ. but they may be fun to play with and that is okay at time too.

6550c,

My understanding is that high quality amplification is less important for bass than for other areas of the audio frequency band. But yes, there are certainly passive subs that let you choose the amp to use with the subs. I use a pair of passive NHT subs with 2 bridged Emotiva BDP-1s. The main advantage of this for me is the ease of dialing down the level of the bass easily for late-night listening. Most of the subwoofer attenuators are around the back. and awkward to reach for...

6550c

Your comment spoke to me . People that want more bass are really just not getting enough satisfaction from their system. They seem not to know why, so of course they seem to blame the lack of bass.

Bad move...... If the system was satisfying the bass would be the least of the problems.

You are right on.

woith some speakers only going down to ,,say 50 hz, your missing alot so maybe a sub is right in some systems.

sounds real audio; I am with you. Subs exagerate the lower end. Watching a movie great use a sub. Listening to music, NO THANKS! Take a good/great full range speaker over a sub any day.