What's new

Questioning the down firing sub design... (1 Viewer)

Dan M~

Second Unit
Joined
Nov 30, 2000
Messages
356
There is an interesting discussion over at Madisound...
http://www.madisound.com/cgi-bin/dis...gi?read=132544
The discussion concerns down firing subs and the production of "floor noise".
Are down firing subs more likely to produce noise from within the floor structure?
(QUOTE) "Subby's with a plate in front of the woofer do so for correct loading - it's crude bandpass chaps !" How true is this statement?
What do you think??
-Dan M.
------------------
-Dan M~
My Small Collection
 

Jack Gilvey

Senior HTF Member
Joined
Mar 13, 1999
Messages
4,948
I really couldn't say if a downfiring subs would be more likely to induce "noise" in the floor. I wouldn't think it likely, though, given the omnidirectional nature of these frequencies.
It does seem apparent, though, that all these SVS-owners and Sonosub-builders have much better floors than those guys do. :)
As for the plate under the woofer, it looks to be there to assure a known distance from an obstruction, regardless of the type of floor the sub is placed on.
------------------
hlfmstflg2.gif
 

Hank Frankenberg

Senior HTF Member
Joined
Oct 13, 1998
Messages
2,573
The induced noises I have to deal with are anything touching a wall in my HT room and also anything on the the other side of the wall adjacent to my sonosub. Several of us sonosub builders live in the souther half of the U.S.
Mike Knapp - Florida, Patrick Sun - Georgia, Mark Hayenga and myself - Texas.
Most of us have concrete slab foundations rather than basements. I'm assuming the floor noise problems are in the homes with basements or where the HT room is upstairs.
- My 2 cents
------------------
"Do you expect me to talk?"
"No Mr. Bond, I expect you to die!"
 

Users who are viewing this thread

Forum statistics

Threads
356,810
Messages
5,123,548
Members
144,184
Latest member
H-508
Recent bookmarks
0
Top