Subwoofer Footing - Connect or Isolate?

Something else that is interesting about conventional VC drivers, they have a return spring sometimes TWO.

That which moves forward is pulled back and there is a dampening factor via the amp too, if it’s direct coupled.. Much like a shock that is used for dampening, more in one direction than the other. The exact reason for different bleed ratios between compression of the shock or the expansion of the shock.. AND then gas assist for speed.

Those shocks under your car or gas assist accumulator for the 200 lb rear door on soccer moms SUV. WORK to do different things..

But they sure work better than Fred Flintstones giddy up. Feet, A$$, and a little spotted hide. All the cushion Fred had.. Stone vacuum tubes, stone record player, Dodo bird for a stylus.. Thing change.. LOL

Innertubes work well, I’m telling you.. Now fill that innertube 1/2 way with water, I’ll bet you couldn’t stay in the room.. Water transfers LF pretty darn good.. Isn’t that the whole sonar thing.. It can be very destructive.

Air is fast enough. A more viscous material like different weights of oil would be slow enough. Both are very effective materials one for dampening one for isolation, BUT both in the same (for ease of application) flexible tube.

The initial shock, the air and tube take the brunt via expansion of the tube, then dampened by the oil. NOT amplified like a less viscous material would act..

It’s not rocket science but you do have to think a bit.. It’s right in there with the "Farmer Astronaut", HECK NO!... but a great example. Great movie. I’d forgotten about it.. I think I'll watch it...

Regards

Speakers and subwoofers like to be solidly mounted to add structure to the enclosure, they do not like to be in micro motion.
The ONLY reason you would ever want to iso mount a speaker or subwoofer is if the energy of the speaker is transfering into something such that it is audibly resonating, e.g. a suspended wood floor.
In that case you would introduce isolstion of some sort because not using it is worse than using isolation.
isolation is a compromise solution, the speaker is now in micromotion.   no isolation is always best if the speaker isnt causing something else to vibrate audibly.

Are there any subwoofer manufacturers who provide a set of tuned springs with their speakers?

@mijostyn --

The last thing you want to do is put a subwoofer on springs. At some low frequency it will start shaking. Vibration/shaking in any speaker equals distortion.

@avanti1960 --

Speakers and subwoofers like to be solidly mounted to add structure to the enclosure, they do not like to be in micro motion.

+1 to both. 

WOW, it makes me wonder if people pay attention AT ALL.

There is no solid anything in a conventional domicile.

I had to pour a 22" thick by 24" wide x 18 foot long to get a base.  Just to isolate gear correctly, and stop transfer from built in base traps. 10,500 pounds of concrete and a 5/8 rebar cage of sorts.. It is isolated from the 5.5 inch slab in the old metal shop.. LONG term project, LOL 33 years ago now. A really good concrete guy did the figuring a LONG time ago..
ZERO cost.. he paid for everything. REAL good friend.. RIP..

In Pete, sandy loam or bog forget it..  I can jump up and down and you can feel it 50 feet away.. 1/8 mile from my house it's just that way.. Tule Pete.

Regards