Subwoofer sitting on uneven wood floors - easy fix? - AVS Forum
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post #1 of 13 Old 01-13-2013, 09:32 PM - Thread Starter
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The wood flooring in the corner in which I have my sub is slightly uneven and therefore the sub itself isn't sitting well on all four legs.

I know they have the overpriced pads that you can put under a sub but I'm wondering if something more inexpensive like a square of carpet or a square of an anti-fatigue mat would work just as well? Right now I have a small folded piece of paper under one foot as a temporary solution but I'd like something more permanent. I feel like I might be missing some easy answer here.
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post #2 of 13 Old 01-14-2013, 12:15 AM
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A piece of carpet would do fine. You can find foam mattress toppers from Walmart for around $10 that would work as well. There's enough material in these to make multiple pads, or double up if you want it.

If you have a downfiring sub, these soft mats have the added benefit of absorbing distortion, whereas hard flooring would reflect it making it more audible.
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post #3 of 13 Old 01-14-2013, 05:05 AM
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Adhesive felt pads (example). Trimmable and stackable. If you're worried about slippage, use rubberized pads (example) instead.


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post #4 of 13 Old 01-14-2013, 05:10 AM
 
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Quote:
Originally Posted by Anodyne View Post

Right now I have a small folded piece of paper under one foot as a temporary solution but I'd like something more permanent.

I use a folded piece of paper napkin to take up the uneven floor wobble of one of our subwoofers and if one stops looking at the piece of paper doing stabilization duty, immediately the fix becomes permanent. Well, it does in our case.
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post #5 of 13 Old 01-14-2013, 06:03 AM
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With a wood floor you really want to put a non-reflective pad under the entire sub, like a piece of carpet, to not only stabilize it but also damp above bandwidth harmonics.

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post #6 of 13 Old 01-14-2013, 01:04 PM
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Are the feet screwed in? Same problem here and I just raised one foot to level it out...

Can't get any easier than that.

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post #7 of 13 Old 01-14-2013, 01:44 PM
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Quote:
Originally Posted by Bill Fitzmaurice View Post

With a wood floor you really want to put a non-reflective pad under the entire sub, like a piece of carpet, to not only stabilize it but also damp above bandwidth harmonics.

is that recommended for all subs on hardwood? I have a dinky 8" front firing, rear port design.

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post #8 of 13 Old 01-14-2013, 01:56 PM
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Quote:
Originally Posted by UGAd13 View Post

is that recommended for all subs on hardwood? I have a dinky 8" front firing, rear port design.
It won't make any difference, since the harmonics that the rug will damp with down firing shoot straight into the room with front firing.

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post #9 of 13 Old 01-14-2013, 02:09 PM
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Quote:
Originally Posted by UGAd13 View Post

is that recommended for all subs on hardwood? I have a dinky 8" front firing, rear port design.

You can however get this effect by orienting the sub to have the driver fire into a wall, and then carpet that wall. biggrin.gif
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post #10 of 13 Old 01-14-2013, 03:13 PM - Thread Starter
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My sub is a front firing driver with a down firing port. Should I still go with the carpet option?
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post #11 of 13 Old 01-14-2013, 03:23 PM
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For the stability yes.

You just won't gain any audio benefits from the padding as ports don't produce above bandwidth harmonics, I believe I've heard Bill explain before.
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post #12 of 13 Old 01-14-2013, 04:25 PM
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Quote:
Originally Posted by Anodyne View Post

My sub is a front firing driver with a down firing port. Should I still go with the carpet option?
The output of the port is down at the lower end of the sub passband, so there aren't any harmonics coming from it to damp.

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post #13 of 13 Old 01-14-2013, 04:57 PM
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Thanks. I realize it was a noob question but just wanted to be sure.

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