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, 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.
I bought a $2500 subwoofer cable and it corrected all the booming and rattling. 

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.
@laskakj 

Thanks for the real-world experience and with the same sub!  That's kinda was I was suspecting.  I don't like hearing the loss in "chest rattle" as that's why we buy big subs in the first place.  But if the quality is that much more significant then perhaps it's worth it.

I really cringe at buying MORE Gaias for my subs too though.. That's $1200 in isolation for me :(

Actually Geoff, the video to which I’m referring is a different one. It is entitled "The effect of ground vibration on audio systems", and was taped in a private space (maybe at the Townshend facilities?). It starts with Max discussing the problem, then moving on to possible solutions.

He is shown standing behind a table (and in front of a projector screen, used in his presentation), on top of which he demonstrates different forms of "mass on spring" isolation. He demonstrates the differences between spikes, a plain spring, and his Seismic Pod (which contains the same spring). He covers the issue of the undamped movement of the plain spring vs. the damped behaviour of the Pod.