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why are two subs harder to place than full range?

sorry if this is a dumb question, but i notice that whenever someone talks about getting stereo subs there usually ensues much hand wringing over placement and room modes, etc., but this rarely is the case when someone talks about full range speakers with large 10 or 12 inch woofers (with or without built in amps for them).

Is there a sound technical basis for this different treatment or is it merely convenience, i.e., since subs can be moved about separately from main speakers, then it makes more since to talk about eliminating room modes by moving them around?

I'm getting a second sub for a rather large vaulted room, have an injured back, and would rather minimize what seems like a rather long process, at least for the time being by just keeping the subs with the mains.

thanks
thomp9015

Showing 4 responses by thomp9015

thomp9015 OP
79 posts
 
thanks everyone, your responses helped alot, sorry i'm just responding but have been away all day and night. thanks again everyone.
thomp9015 OP
79 posts
 
iplaynaked offers the best first cut for my situation, and i appreciate the advice. if that doesn't seem to work i'll wait for my back to heal and start moving some furniture and listening to the sub in different positions. btw. my room is about 14'x 23' with 12' vaulted ceilings. i'll be using a pair of tekton design fostex 167e single driver speakers on the short wall and two cheap aural ecstasy subs (i expect not to turn them up very much) listening at approximately 9 feet away. thanks again everyone.

magfan, in my last apartment that is almost exactly where i had my, at the time only one sub, and in the much smaller room i had huge bass with almost no volume (xover @ 60hz) and what seemed good integration (at least it didn't seem to take away from the sound of the tektons running full range, just an addition of lower frequencies).
thomp9015 OP
79 posts
 
btw, here is something some of you may not already know concerning the use of subs with t-amps http://www.audio-magus.com/help_answer.asp?ID=20#135

although i didn't know this and connected speaker level anyway, my amp seems to have not suffered damage.
thomp9015 OP
79 posts
 
thanks duke, i really respect your postings, both in terms of tone and content.
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