SVS Subwoofer Isolation feet. Will I lose bass?

"No theoretical bs about layers of quartz rocks."

I believe that already morphed from theory to practice.

"...and gave him a cookie..."

🍪

https://www.today.com/food/girl-scouts-left-thousands-unsold-cookie-boxes-due-coronavirus-t179265

@dtximages I have an older pair of the SVS SB12-NSD subwoofers. My subs came with smallish rubber feet (I assume rubber) that keep them off the wood flooring. I would think yours did also. Are you just wanting larger ones?

As I mentioned mine work fine on wood flooring but would likely not on carpet.

@jetter yes mine came with the normal small hard rubber feet to keep the sub off the floor about 1/2 inch.

99% of the things I've read/seen/heard about the SVS isolation feet has been positive. Tighter more accurate bass, sometimes deeper bass, etc etc..

But, the last YT video i watched mentioned that on sealed woofers, there's a significant db drop.  

So, to get this tighter/cleaner bass, am I sacrificing output? According to his measurements, it's significant.

That's the question.

To expound on the YT vid I mentioned, his measurements, if I remember correctly, showed almost no impact on a PORTED sub.  There certainly is a difference in the way cabinets react to a moving woofer in a sealed cabinet with no air escape, so this seems to make sense.

If these feet are detrimental to a sealed sub, I wonder why i have not heard anyone mention it.  

Could it be because we're all sheep and agree with our favorite poster or reviewer?

I know that MANY people have sealed subs and have sought after isolation.

@dtximages  I was actually considered getting these for my subwoofers, not realizing that there were already feet on them..  I was just checking out the SVS website and if I understand their pricing correctly it looks like it only cost $49+shipping for a set of four.  And there is a 45 day return period if not happy.  Seems reasonable enough, especially compared to some other audio items.