2. misc-audio
  3. 140089-1783

Stopping Vibration from Walmart trucks

I have for the past two weeks had problems with my living room and master bedroom having a low frequency issues in the center of each room, when certain trucks are delivering at a Walmart about 100 yards or so away.
Does anyone know how to disperse the low frequency waves in the room. As you move towards the walls, even in the direction of the Walmart the subwoofer effect goes away.

I have probably contributed to the issue by taking down an old wooden fence and replacing with a wrought iron fence, so we could enjoy a greenbelt between us and Walmart. My wife and I noticed the problem about two days after replacing the fence. It is only noticeable on some evenings with certain trucks, and is actually louder in my living room than at Walmart.

I was wanting to add bass traps are whatever is needed, as I don't want to go back to the fenced in backyard.

Thanks,



acman3
geoffkait's avatar
geoffkait
23,365 posts
 
The whole building is being shaken, especially upper floors. This is an obvious case where you would ideally want the entire building up on springs.
oregonpapa's avatar
oregonpapa
4,867 posts
 
  • Geoff sez: 

"The whole building is being shaken, especially upper floors. This is an obvious case where you would ideally want the entire building up on springs."

You mean suspended like a Linn turntable? 

Frank


 Report this

folkfreak's avatar
folkfreak
1,349 posts
 
The practical solution is to isolate the speakers and your stands using a spring based solution such as the Townshend products, or for that matter Geoff’s springs. If you are feeling flush (very) an active isolation system such as the Herzan tables would also be very effective ... as others have noted this sort of interference is endemic and most audiophiles have never adressed it
geoffkait's avatar
geoffkait
23,365 posts
 
If memory serves Linn’s suspension doesn’t go low enough. That’s why they’re always trying to update their suspension, the Trampoline or whatever. In order to defeat the Walmart truck you have to go down to 2 Hz.
folkfreak's avatar
folkfreak
1,349 posts
 
Geoff -- as far as I am aware no turntable suspension (barring ones such as the Dohmann Helix with an integrated minus-K isolation system) has a suspension that deals with vibration outside the audio range. Agreed the Linn is exceptionally floppy (i.e. high resonant frequency) but most are like that - my EAR has among the stiffest springs I know but again is no use against the sub 10Hz issues we are talking about here
More to discover