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In Reply to: center/rear channel sub posted by Jeff D on December 29, 1999 at 12:04:32:
Hi JeffNot sure what you mean by a second sub. If you mean a stereo pair (which will not play stereo at those frequencies) then yes. The more loading you have the better - helps combat all those nasty resonances that all rooms have. However I have found the quality of driver is most important. If you want good clean bass the drivers must be capable of moving the air without cone break up, something not many can do. I've ended up with a pair (each in their own enclosure) of Alpine DDW -F30A car speakers and am hearing very clean bass through the main system. In the surround sub I'm using a pair KEF B139's in their own transmission line enclosures (not 100% successful so not recommended).
To summarise, get good drivers first, then double up next.
Hope this is helpful.
John
I am referring to 5.1 surround. I already have a sub for LFE. I am thinking of adding a separate one for the center & rears, possibly taking the line level directly from the DVD player although not quite sure how this would sound. I can't take the speaker levels from my center as I have to set that to small or it will become to stressed at full range.
doesn't your pre/pro send the excess LFE from the center to the sub output line when you set the center to small? Thus, the LFE you're looking for is in the sub line level. You don't have to fiddle with major acrobatics here (unless you're bored). Just "y" the line level LFE to 2 identical pairs of subs. I have mine on oposite ends of the length of the room which's responsible for the terrible 60Hz room modes (acoustic spike). This actively destructively cancels them out. i can't speak for your room, but mine is happy. If you're fortunate to have an acousticly good room, you may want to either stick to one or stack the two.
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