Subwoofer Footing - Connect or Isolate?

zlone,
Considering everybody’s system and room differences not to mention their personal taste, there aren’t many subwoofer absolutes. Just go for it.
Placing some form of suspension under your sub can be a very inexpensive and an interesting experiment. If you do, you may want to experiment with adjusting the gain.

My 66 VW convertible can be seen in the August 1992 edition of Hot VWs on page 75. oldvymec is right. Even thought the convertibles body work was produced by Karman sophistication of the doors are in the eyes of the beholder.

I’v had a couple in the house and get a kick out of REL’s wishful -6dB advertised frequency response.
Have fun with it.

My home has a hardwood floor on a crawlspace. 12" subs cause simply too much structural rattle in the room. Installed set of SVS Soundpath isopods.  Problem solved. Clean crisp bass extension. No lost energy to the room floor. Night and Day difference.  MC & Heavy are dead right.  

Wait...

Doesn't this depend a lot on what type of floor one has?

Solid foundations sound better with the sub coupled to the floor. Suspended floors sound better with the sub isolated from the floor.

My friend owns one of the best audio/video integrators in Los Angeles. He seems to believe it is a no brainer, 

All I can tell you, is I lived in Alta Dena in an older house with a suspended floor, and the bass sounded boomy, and tubby, until I isolated my subs from the floor.

Now, living in the Valley, in a house with a solid foundation, the subs sound better coupled to the floor. 

And even at their best at the Alta Dena house, on the suspended floor, they did not sound as good as they do on the solid, slab foundation.