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Does placing sub on four "feet" help reduce rattle
#82084 02/18/05 09:23 PM
Joined: Dec 2004
Posts: 93
old hand
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old hand
Joined: Dec 2004
Posts: 93
Hello- My final (I hope) question related to my EP500. Now that I'm setup, and it sounds great, my only complaint is that the Sub rattles the crud out of the floor (setup is upstairs) shaking everything in it's monstrous path. While this is a good thing, the actual rattle of things on the floor is not pleasant. With that said, would placing the sub on four 3-4" feet help reduce this? I have seen this in some setups and wondered if that's what it's for. Thanks!!


M60 VP150 2x QS8 EP500 HK 7300 DENON DVD-3910 Sony 60" SXRD
Re: Does placing sub on four "feet" help reduce rattle
#82085 02/21/05 10:32 PM
Joined: Jan 2002
Posts: 3,270
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Hi Darth,

Using special feet under the EP500 as you describe may help a bit, but you still have to contend with the EP500's acoustic deep bass energy that's causing objects (and your floor) to resonate. All objects have a resonance frequency (it's the basis of musical instruments--controlled resonances) and if the bass wavefront is powerful enough, which it is from the EP500, then you will get some sympathetic resonances.

But using special feet under the sub would at least let you prevent some of the mechanical vibration from being transmitted to the floor beneath.

Regards,


Alan Lofft,
Axiom Resident Expert (Retired)
Re: Does placing sub on four "feet" help reduce rattle
#82086 02/22/05 03:30 AM
Joined: Sep 2003
Posts: 427
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Alan,

Similarly, would help at all if I put a square of carpet between my downward firing sub and my wood floor? My sub tends to walk around the room and sometimes runs into my M22s. Never enough to make them fall, but it is pretty funny when I turn the lights on and it has walked a foot or so to the side.

Thanks

Re: Does placing sub on four "feet" help reduce rattle
#82087 02/22/05 03:38 AM
Joined: Aug 2004
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axiomite
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>>My sub tends to walk around the room and sometimes runs into my M22s

Sounds like your sub either needs a leash or some discipline


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
Re: Does placing sub on four "feet" help reduce rattle
#82088 02/22/05 02:10 PM
Joined: Jan 2002
Posts: 3,270
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Snippy,

I think a square of carpet would help and it shouldn't affect the performance. But maybe a bolt in the floor and an attractive shackle to the sub are in order.

Regards,


Alan Lofft,
Axiom Resident Expert (Retired)
Re: Does placing sub on four "feet" help reduce rattle
#82089 02/22/05 04:51 PM
Joined: Feb 2004
Posts: 324
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Carpet is fine. I threw a rug under mine, not because it was walking though (you expect a SVS PB2-Plus to move? yeah right)....Won't affect it, it should be fine. I even think it sounds a bit smoother.

- D


"Big John is my Idol...or is it that other way around? Let's ask Ray!"
Re: Does placing sub on four "feet" help reduce rattle
#82090 02/22/05 11:17 PM
Joined: Jul 2004
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smoother huh? was it a Monster rug. lol


------------------------------------------------
Leave the gun, Take the canolis.
Re: Does placing sub on four "feet" help reduce ra
#82091 02/23/05 01:24 AM
Joined: Apr 2003
Posts: 16,441
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Snippy, instead of a piece of carpet, try using a rubber under-rug pad meant for hardwood floors. You should be able to pick one up from a store like Bed Bath and Beyond for pretty cheap and cut it to size.

Re: Does placing sub on four "feet" help reduce ra
#82092 02/23/05 01:25 AM
Joined: Sep 2003
Posts: 427
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good idea, thanks Peter


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