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Down-firing Sub makes floor rattle

I just bought a ml dynamo sub. it is a great sub but it makes the floor rattle. i only use it for music so it is annoying..how do i fix this? i don't have it on the attached spikes as of yet....it is on the attached stand with rubber feet. would the spikes solve this? or should i just put something under the sub? this sub can also front fire, but i'd like to use it down-firing.......the carpet is very thin and maybe this is the problem?

thanks
cooch
cooch OP
81 posts
 
marco, i have tried 1 slab of granite, about 1 inch thick, but that still didn't work...what thickness should work? thanks
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newbee
4,767 posts
 
I think I've got some bad news for you. The vibrations that are being transmitted to your floor are more likely than not airborne, even that may seem counter intuitive. A down and dirty check - put your hand on the sub when its making the floor 'rattle' and see if the sub itself is producing a lot of vibrations. If not you might get some better help by shoring up the floor. JMHO.
shadorne's avatar
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shadorne
7,467 posts
 
Newbee has good point. Ultimately everything will rattle. A plywood sheetboard somewhere could use some extra screws perhaps? A lose air duct mounting? A heavier carpet or underlay may help too. Also try moving furniture around or put you hand weight on different things (touch windows/doors) - it might not be just the floor.
cooch OP
81 posts
 
thanks for the advice. i will try some more things...wouldn't front-firing the sub be better in my case?
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