My Subwoofer vs. My downstairs neighbor

Started by noisefix on 14 April 2009. 3 replies.

Originally posted at johnlsayers.com, topic 12293.

Hello all, It's been a while since I've had to come here to seek some advice, but glad the forum is live and kicking. I have moved to an apartment block and recently got a complaint from my downstairs neighbor regarding the bass traveling through. My setup is based on a couple of small satellites + a subwoofer. The sound in my music room is not crazy loud, but enough to feel a bit of the thump of the sub however it seems that some sound reverberates downstairs. I rent so doing anything dramatic like adding a slab of concrete is probably out of the question, so I'd like to see what other options or suggestions the wise people here may have to keep my setup. Would a thick rubber pad under the sub be of any use? Can I do anything really? Regards
Tell us about the construction! Floor, walls, ceiling, etc. It's hard for folks here to see what you are seeing from this distance! :)
Hello, Thanks for your reply. My new place has what appears to be concrete floors (I'm guessing rather thin ones). The walls are some kind of drywall which feel quite hollow behind them, I am guessing the drywall has some insulation behind it. The room is approximately 2.75 x 2.75 metres. I haven't climbed up to feel what's in the ceiling, but I'm guessing its somewhat similar to the walls.
The room is approximately 2.75 x 2.75 metres.
Ouch! Square is not good. that probably isn't the cause your problem, but it must be doing nasty things to your room response...
My new place has what appears to be concrete floors (I'm guessing rather thin ones).
Probably the easiest is like you suggested: Get the sub woofer of the floor somehow. It is probably coupling directly to the thin slab, and my good friend Mr. Murphy has a law that says it is probably exciting the exact right resonance downstairs that most annoys your neighbor! Some companies sell pads specifically for decoupling amps and speakers from the floor, but do careful research and check the specs: there's an awful lot of acoustic snake oil out there! If that doesn't work, then in the worst case you could offer to treat your neighbors ceiling for him: install RSIC clips and hat channel, attach a couple of layers of drywall to that, fill the cavity with insulation, and seal around the edge with acoustic caulk. Of course, that assumes that it is just the ceiling that is causing problems... if your sub-woofer is flanking though his walls too, then it would probably be cheaper to move to a new apartment, on the ground floor! :) - Stuart -