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whoom instead of BOOM

hi everyone. new into home theater(though been running loudspeakers off a tv since the early 80's). anyway, i'm having a problem with the low frequencies. at the volume at which i get the spls i want(pants rattle a bit, couch vibrates etc.) i get a whooom response and not BOOM and lose definition and clarity. is it possible to acheive these spls without the "whoom" mucking it all up?
the room: 35x25x10 it is not closed in completely
the system: mirage m5si fronts, mirage 595si rears, mirage om-c2 center, mirage bps 150i sub(also working with dialing in a polk psw12 sub together), onyo txds797 processor. the front end is a panasonic dvd-s97.
THANKS!!
uncertainsmile
shadorne's avatar
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shadorne
7,477 posts
 
I reckon Dbphd has the solution...get a big Velodyne HGS-15 (or two). Small subs just can't handle the transient energy above a certain point (around 100 db which is not loud for frequencies from 20 to 40 Hz) and run out of gas at too low an SPL to be convincing in a large room - they end up lacking definition.
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redwoodgarden
150 posts
 
Bag End is a good choice, but keep in mind that in order to get the deep bass (down to 8Hz), you will also have to get an electronic device which is called an "Infra Integrator" and that will be an additional $1000. Otherwise the woofer will only go down to 60Hz.
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dbphd
1,632 posts
 
Redwoodgarden,

Your post is confusing to me. Why would you define deep bass as 8 Hz, and not the 15-20 Hz available with a big sub? What does an infra integrator do? I presume shake you, because you sure as hell can't hear 8 Hz. What woofer will only go down to 60Hz? That's pretty pathetic performance for a woofer.

I wonder if you confused OP as much as you did me.

db
sogood51
2,157 posts
 
The large VMPS subs are another option...at least a pair, four would be even better in your room.

You can order them active, or passive, I'd go passive myself.

Dave
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