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SVS Subwoofer Isolation feet. Will I lose bass?

Most of what I see about subwoofer isolation has to do with minimizing rattles or bothering the neighbors.  But what about a sealed subwoofer on a concrete slab?  Would these dampeners not "dampen" the bass as well?

My setup...  Dual SVS SB16s on a concrete slab.  I don't have a rattle problem and the room is 20ft tall so I can't afford to "lose" bass because of my shakey rubbery feet.  

I've read and seen many great things about these but I have a hunch it would hurt a sealed sub on a slab more than help.

dtximages
pmg1223
9 posts
 
I run 2 SVS SB16Ultras and 2 SVS PB13Ultras. All are on the SVS isolation feet. Theater is on the second floor so I'm not on concrete but I did not lose any low end and as mentioned before the sound tightened up. Not to mention I run these subs at a gain of -24 and can still rattle light fixtures, doors, etc.... if wanted. With SVS typically if you lose some bass you have plenty of gain headroom.

I also have the Townshend platforms under Focal Utopia Maestro towers. I have no idea how the springs in these things are engineered but they are game changers.
glupson
7,842 posts
 
"...but you lose some of the chest rattle."
That is good? Isn't it?
bdp24's avatar
bdp24
9,788 posts
 
@pmg1223, in one of the Townshend Audio YouTube videos, Max explains the design and demonstrates the effectiveness of his Seismic isolator. Just do a search for the company name on YouTube, and all the videos will be made available for viewing.
japanjim
8 posts
 
I bought a $2500 subwoofer cable and it corrected all the booming and rattling. 
geoffkait's avatar
geoffkait
23,365 posts
 

bdp24
@pmg1223, in one of the Townshend Audio YouTube videos, Max explains the design and demonstrates the effectiveness of his Seismic isolator. Just do a search for the company name on YouTube, and all the videos will be made available for viewing.

>>>>The Townshend video answering the questions inherent in the OP was posted yesterday morning at 10:14 by your friend and humble scribe.
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