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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
erik_squires
16,884 posts
 
Isolation feet are not needed here and could be detrimental.

It probably won't hurt you as much as it would smaller speakers.  The idea is that you want the speaker to be rigidly fixed in all three dimensions without rocking.  The woofer's apply a great deal of energy against the cabinet. Even light rocking can reduce the output into the room.

You do want to prevent transmission from the cabinet to the floor, and create a vibration signal that reaches you at a different time than the acoustic one.
dtximages OP
368 posts
 
@erik_squires 

Thanks, that's the kind of info I'm looking for.  So basically, leave the factory rubber stubbs on sealed woofers on a slab.  
erik_squires
16,884 posts
 
Thanks, that's the kind of info I'm looking for. So basically, leave the factory rubber stubbs on sealed woofers on a slab.
 

Yep, unless you can feel vibration through the floor itself.
tablejockey
4,080 posts
 
Not so fast...

More  conflicting pseudo science-refer to subwoofer suggestions
https://mapleshadestore.com/freeupgrades.php

Lots of unconventional suggestions that some swear by.

I have the subs on brass footers and maple slabs. Do they really do anything? Any tweaking is best to just try yourself.

Mine just look great because I had them cherry stained to match the subs.
geoffkait's avatar
geoffkait
23,365 posts
 
Thousands of audiophiles isolate their speakers and subs with spring-based iso devices. And guess what, they ain’t amateurs. This isn’t the 1980s any more, guys. Wake up and smell the coffee! ☕️
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