Cheap Speaker "Isolation" Solution for 300 lb. Speaker


 Good Afternoon All,

I am looking for advice on a cheap and simple isolation solution for large, heavy (325 lb. each) floorstanding speakers. 

I've read much advice on granite or marble slabs, multiple layers of cork, springs, etc; while this has been helpful, it is neither a cheap or simple solution. 

Ultimately, I am looking to protect my wood floor from damage these very heavy speakers might do, as well as decouple the speaker from the floor in order to reduce bass resonance (I am in an apartment complex and worry about noise complaints). I've looked into sorbothane pads, but they never seem to be able to hold this much weight.

Thanks!
scorndefeat

Trampoline is optimum. I've built two. One for my turntable and second for SVS SB-2000 pro. They are amazing. Requires some trial and error. The tramp must end up causing item to "hover" inside rack. I've used high strength bungees but it must be free enough to sort of "bounce" within frame. So for these 300 lb speakers the frame would need to exceed the footprint of speaker, and the frame must be both big enough and strong enough to weave sufficient bungees through holes in wall of frame. I used a box with books to replicate both size and weight of sub BEFORE my delivery arrived. At 300 lbs you would need four people to place the speaker onto the trampoline. It will probably tilt in one direction which will require some rearrangement of bungees. A cross weave both front to back and side to side can be accomplished with a solid length of bungee woven back and forth under and over each strand. Slider feet under frame allows the item to be slid with effort but at least you won't have to remove speaker to toe in or whatever. Your fellow tenants will bless you AND (more importantly) those speakers will sound amazingly better. Plus all the vibration shaking your other gear will be greatly diminished.

 UM...Hee hee,

I never stated the weight of the "speaker/s" I was at that time working with.

"Oop's" Sorry!

But they happened to be, (460lb.) each with a, (21" x 24-1/2") footprint and (94") tall (Line-Source) array's.

I am not sure that "Optimum" is the word which I would use to describe your "'Trampoline" config. with those numbers.

Unless maybe I had a really, REALLY intense fetish for "Bungee"!

But alas, I do not...

If you're serious, search eBay for springs. Ones you want will be about 2-3" diameter and compress to about 2" high under a 115lb load. This will be the dirt cheap solution, yet about a million times better than what you're doing now. If you don't want the speakers raised that much then make a platform and put the springs in the corners, in other words copy Townshend Podiums. This is what I did as proof of concept. Works real good.

Or just buy 4 sets of Nobsound. Four sets will easily support 460lb speakers. Way easier. Of course if you do Podiums that will be the best by far. But even Nobsound will be better than what you're doing now.

Hudson Hifi has some reasonably priced isolation and stabilization products.