Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
Re: Subwoofer Isolation
tomtuttle #297855 03/22/10 06:54 PM
Joined: Jan 2002
Posts: 3,270
connoisseur
Offline
connoisseur
Joined: Jan 2002
Posts: 3,270
Hi Tom,

If we put all of this in context, the actual floor-borne mechanical vibration from a sub or speaker is a relatively small component of the total output from a powerful subwoofer and/or full-range loudspeaker. It's the acoustically generated energy in the bass combined with the room's standing waves that set all kind of things in a room resonating, including the sheetrock, studs and wooden floor, often to an annoying degree at high volume levels (especially for easily annoyed neighbors in nearby apartments or condos).

Of course, as pmbuko notes, isolation pads would absorb mechanical energy but do nothing for the bulk of acoustical energy a subwoofer or speaker generates.

Regards,
Alan


Alan Lofft,
Axiom Resident Expert (Retired)
Re: Subwoofer Isolation
alan #297919 03/23/10 12:28 AM
Joined: Mar 2008
Posts: 110
veteran
Offline
veteran
Joined: Mar 2008
Posts: 110
Hanging speakers from cables could be a bad idea. If the speaker hits just the right notes then it would excite the tensioned cable supporting it and cause it to vibrate.


M22 VP100 QS8 RX-V665 DMP-BD55 SMS-1 LFM-1+ LG47SL90

Depression is merely anger without enthusiasm.
Re: Subwoofer Isolation
prototype3a #297923 03/23/10 12:37 AM
Joined: Jan 2010
Posts: 578
G
aficionado
Offline
aficionado
G
Joined: Jan 2010
Posts: 578
 Originally Posted By: prototype3a
Hanging speakers from cables could be a bad idea. If the speaker hits just the right notes then it would excite the tensioned cable supporting it and cause it to vibrate.


Back in the 70's, I met a guy named Tom.. He was in a band and played guitar. The story goes, he went on to "higher" education studied music theory using keyboards mostly... thought he understood it all got bored and became an airline pilot.

The interesting part and I have seen this happen... he could find the harmonics of a structure (the house we were partying in) and if he wanted to shake the sucker to the ground... it was amazing! He would just play around till everything was shaking. If I recall correctly, he had a sun amp. would turn it towards the wall and just go at it.

or it was the acid and a good story!

Last edited by wordgasm; 03/23/10 12:39 AM.

Fronts/Wides:M22s in/on
Center:VP150/VP100 in/on
Hghts,SS,SR:QS8s
Sub:EP500
AVR:Onkyo 3008
Re: Subwoofer Isolation
Glitchy #298061 03/23/10 08:23 PM
Joined: Jan 2004
Posts: 13,686
Likes: 1
shareholder in the making
Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,686
Likes: 1
The reason my front stage is insulated (some use sand) is to reduce the bass from the sub traveling to the user through the floor.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB SonyUBPX800


Page 2 of 2 1 2

Moderated by  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,376
Posts431,993
Members15,416
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,437
SirQuack 13,686
CV 11,805
MarkSJohnson 11,451
Who's Online Now
1 members (2x6spds), 98 guests, and 4 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4