SVS SoundPath Subwoofer Isolation System Review

Build Quality

Easy to install
Tames unwanted vibrations
Why aren’t these standard issue?

If you have touchy neighbors who complain about vibrations from your subwoofer, you need these in your system.

I love bass, always have, always will. The same can’t be said for my wife, who constantly tells me, “Turn it down. You’re going to wake the dead, or worse, go deaf!” Part of my problem is that my home rests on a raised foundation with a wood subfloor underneath my carpet, which means my dual-subwoofer setup transmits plenty of vibrations from the subwoofer to the floor, which then resonate through the rest of the house. In fact, on certain low-frequency scenes in movies, you can literally see my windows vibrating. But is this really a problem?

To us bass hounds, not really, but are we getting the best bass possible? It turns out, no, we aren’t. When subwoofers are pounding away, they create a lot of mechanical energy that has to go somewhere. When they are in contact with your floor, that energy transmits directly into the substrate. If the sub is on concrete, this isn’t an issue because the concrete is solid and dense. That’s not the case with a wood subfloor. It absorbs that energy and creates floor resonance, which in turn can cause unwanted buzz or rattle in the room, which can lead to complaints from significant others or worse, neighbors in adjoining spaces.

In my particular room, this was made apparent by the fact that my fireplace insert was noisy as all get out, so I was a prime candidate for the SVS SoundPath Subwoofer Isolation system. The kit is made up of screw-on replacement feet that swap in for your sub’s existing supports. They’re described as “elastomer isolation feet”—essentially rubber or a rubber-like compound—and come in sets of four ($50) or six ($70). Multiple sets of screws are included with the feet to accommodate numerous install situations and subwoofer brands, and the feet can be installed in less than 10 minutes. SVS was kind enough to send me two boxes to install on my SVS PC-Ultra cylinder sub as well as on an HSU VTF-15H MK2.

Once installed, I fired up my system and ran a quick calibration to see how they affected the subwoofer volume. It turns out that I needed to bump the volume 2 decibels in each sub versus the volume without the feet. Next, I popped in some bass-intensive Blu-rays to see what, if any, effect they had. First off was the opening sequence of Toy Story 2, where Buzz Lightyear is entering the atmosphere in search of the evil Zurg. In the past, when the Toy Story 2 logo rumbles into the scene, that fireplace insert would annoyingly rattle, but with the feet installed and listening at the same volume, the rattle was gone!

The Ultra HD Blu-ray of Deadpool is one hell of a ride, and the Dolby Atmos track is to die for. Whether it’s the action-packed opening scene where we first meet our hero or the climactic battle, the bass response is a demo showpiece. While I rarely listen at reference level—it’s bad for your ears—I couldn’t resist doing so when I was alone in the house, and what an audio treat it was. Deep pounding bass is prevalent throughout the movie, and any vibrations I felt were from acoustical energy, not from mechanical energy shaking the room.

Through much experimentation, I discovered that I could actually increase the overall volume by 7 dB without having my wife complain that it was too loud. It turns out that she connected the room vibrations with loudness. So not only do I get to listen to movies the way I really want them, she thinks she’s getting her way. Now that’s a win-win!

At $50 (or $100 in my case), this subwoofer isolation system is a true bargain. If you live in an apartment or condo, your neighbors will definitely appreciate the investment as well since the vibrations from your sub may be causing some angst. If you’ve spent your hard-earned cash on a subwoofer you want to listen to at its full potential, and if the buzz and rattles in the room are frustrating you—or worse, your neighbors—this definitely is an answer to your problem. Highly recommended.

brenro's picture

My subs are sitting on tile covered concrete and they still buzz and rattle the furnishings.

David Vaughn's picture
I'd give them a try. I was shocked how much difference they made in my room.
Tangential's picture

I currently use a granite chopping board under my sub, which has gone a good way of eliminating unwanted vibrations. I would get a rattle from the door, vibrations in my wood laminate flooring and a wierd thing happing off a side wall during really deep bass. Still not completely perfect so this might be worth a try.

msardo's picture

I bought these and installed them on my main system that has two subs - no more window rattles, etc. - just as advertised. Since you are not listening to rattles, the bass is a bit cleaner sounding. I also agree, that you may find that you have to turn up the bass a little bit - just like David mentioned in his article.

I also have a set of these on my single subwoofer on my secondary system - again - great results.

Scottyb09's picture

I don't have these but do use a Gramma for my M&K MX-350THX. Makes a major, major difference and well worth the $50.00

dnoonie's picture

Great to hear about another good speaker isolation device, a good product for the tool bag!

I've got isolation of some kind under all my speakers. Foam wedges on the surrounds, Isoacoustic stands on front and subs. The Isoacoustic are a little more expensive but I wanted the sub a little off the floor to make vacuuming safer and easier.


cinemasavvy's picture

Makes so much sense. As I recall, the old THX standards for movie theaters required all floor standing speakers to rest on four vibration isolating "Super W" pads from a company called Mason. In comparison, these are super attractive...although the Mason pads cost around two for a dollar.

hk2000's picture

If you got any loose panels on the wall, windows.. etc, they vibrate and produce extraneous noises regardless- The air pressure alone will do it. Since when do speakers have to be isolated? Are you saying the speaker spikes that most towers come with to insure speaker COUPLING to the floor (through the carpet) are counter productive? I disagree. I think the more solid the speaker/subwoofer coupling to the floor, the tighter the sound will be- especially sub frequencies! and the only time this gadget would be helpful is when the floor itself is not rigid enough- as in second floor apartments where the entire building is made of wood frames and beams but even then, like I mentioned, the loose panels on wall etc will still oscillate and make noises when the air pressure resonates with said panels. IMO the best way to fix such a problem is to make sure those panels are fastened so they don't resonate. And in the case of apartment dwelling, well, you're still going to bother the neighbors- I know from first hand experience living in apartments for over 15 years, you can suspend the speakers from the ceiling and have them touch no part of the room, they still bothered the neighbors and the sounded awful BTW.

jnemesh's picture

My sub (Era Design Sub10) only came with spikes...and I just moved to a home with hardwood floors in the living room. This is the PERFECT solution! I ordered them through Amazon and should have them in a couple days...although I won't be able to test them until my theater is re-installed at the new house. I will let you know how it sounds when I do get it up and running though!

TimmyS's picture

If your subwoofer cabinet is transferring vibrational energy to the floor enough to shake it and everything connected to it I think your sub company has produced a flimsy cabinet! Just saying! My Martin Logan subs emit "no" cabinet vibration, you could literally balance a nickle on top when you are cranking it and it wont fall over. One cannot feel the cabinet vibrating at all. If things start to rattle it is because the loud sound waves are hitting the shaky object!