SVS Subwoofer Isolation feet. Will I lose bass?

I think some people are too smart for their own good and too dumb to know it.  

1. The SVS Isolation feet are basically the same as squash balls or any other type of rubber device that limits the transmission of energy into the floor.  

2. This conversation is NOT about spikes, it's about isolation feet in a sealed sub on a slab floor and its effect... Detrimental to output?  If so, do the positives outweigh the negative of less output?.. No theoretical bs about layers of quartz rocks.

3. Can you block someone from posting on a thread?  

4. If I told geoffkait he's the smartest person in the room and gave him a cookie would he go away?  

"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.