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
alucard19, the price is certainly right on those pads! For that price, can't hurt to try em. Not high on the physical appeal value, but function is function. 

The Gaia line of isolators looks great but I just cannot justify spending that kind of money for isolation feet, regardless of how effective they are. I just don't have the budget for it. 

The Teo Audio diamond isolators don't exactly look robust, but the description certainly fits the bill, as I absolutely need the bass dampening considering my apartment situation. The site doesn't describe much though, I can't find info on the max load weight per pad or the price on these. 


I'm using 2 inch thick slate slabs on top of hockey pucks for my Monitor Audio PL300II's and works great. If your looking at stone I recommend slate, which I have read is the best for sound resonance, as opposed to Marble and Granite which are not very good. 
I know you are gonna laugh BUT: for isolation under my 85lb speakers (Gershman Avant Garde RX-20), I am using tennis balls inside Tropicana Orange Juice bottle tops! - 4 per speaker (one in each corner). As long as your speaker bottoms are flat - for your speaker weight - I'd experiment with a muffin tin (12slots) with new tennis balls (colors your choice). Your speakers will look like they are on something Post-Modern, designed for a Portland Oregon municipal building in the 90's...
I am sure that die-hard long time audiophiles - wordsmiths all - who contribute one-liners or tomes, should bring a chuckle in reply to my suggestion... But it works for me.
Good Luck to you - and don't be afraid to experiment...
I get it, the Gaia's are expensive. Here's another thought, never tried them. Hockey pucks...Not expensive from Amazon. I would drill a small hole in the center of the puck. Use a gauge to make sure the depth is consistent. Not too deep, maybe.25"... This way the spike seeds itself into the rubber. Theoretically it should work. And it will not look BAD...What speakers do you have????
The Teo Audio diamond isolators don’t exactly look robust, but the description certainly fits the bill, as I absolutely need the bass dampening considering my apartment situation. The site doesn’t describe much though, I can’t find info on the max load weight per pad or the price on these.

Somewhere around 100-125lbs per pad is when they are at their optimal, as in the entire pad is being used. On both sides, with flat connectivity to the two full surfaces of the pad.

The way to use them with light audio gear is to spike/cone the gear and then place the center of the dull tipped cone (do not want to rip the material) in the center of the pad. And then you have maximum force in a small part of the pad. This gives a nice xyz type of damping effect, overall (the surface of the pad curves in and captures the cone tip) , and the preamp, cd player, etc, will be 2hz lossy spring damped. From both sides, essentially. Isolation and damping, combined.

sorbothane? No. Left that stuff in the ditch over 25 years ago, never looked back.

FYI, Taras, the other half of Teo Audio, his professional or day job, is doing world class acoustics and mechanical isolation, etc work. He’s the guy the best firm in Toronto calls in as the cooler for jobs they can’t tame. The firm who calls him in is probably the most original and oldest running company on the planet in taming all the known forms of mechanical and acoustical noise. Taras has done the acoustics on about 60 films and there is near a 100% chance that most of the readers here have heard his work, as some of the jobs are permanent acoustics installs for recording studios (Film, TV, etc). He’s taken on jobs that the best in acoustics refuse to touch --and walk away from. Their record (other acoustics firms) is one of not offering refunds for failed jobs (contracts state zero guarantees) and Taras always guarantees his work. If that does not say ’absolute unit’ in the world of acoustics, I don’t know what does. So good that the NRC can’t touch his skill set. 100% serious here. What I’m trying to say, is, that we say - the pads work. And that’s what stands behind the statement.

A hard damper like a magnetic one, or even done with elastic stranding, or springs of some sort... with hard shiny aluminum attachment... does not damp anything, really, it merely isolates.

The diamond dampers (just a convenient marketing name) works from both sides. It damps the connectivity to the given surface, so it isolates and it damps the device that is sitting on the pads with something analogous to their primary isolation function. double duty.

It is incredibly effective, and quite correct in what it does. The problem comes when people are so used to gear with noisy chassis that they’ve tuned their hearing and their system design/build/choices to the sound of rattly noisy gear with poor isolation.

So they try the dampers and some say the sound is too dulled. And we have to agree and go along with that... rather than state the obvious prior point.

Which is... ’go back to the start of the entire endeavor and set off on the correct foot from the get-go’. As one now has a better noise floor which means a better and greater dynamic range, so one is listening to less noise, noise that was previously mistaken for being signal. Ouch. The upside is that the door is open for better. Discernment is required.

In the case of this very large and heavy speaker, a total of 12 pads might be in order. Six per speaker might be the trick. Isolation will be the result with a side order of a bit of noise removal from the speaker cabinet.