this maybe kind of a install related question...

i have a set of components that were in my car... i was running them in my doors without any type of enclosure/baffle... i added some foam speaker baffles... i lined them with sound deadening and filled them with polyfill (not very much since the speakers are just slightly smaller than the baffles)... now i get a resonance somewhere in the vocal/midrange area... at a certain frequency with voices (probably under 1khz) i get a harsh bite... any other frequency sounds fine... what can i do short of removing the baffles to fix this problem? there is a 10 or 11 band eq with a 1 band parametric eq... could i utilize that to help with the problem? the reason behind me using the baffles is that the doors in my car arent sealed... with most cars the outer and inner door skins are locked together (the outside sheet metal is folded on top of the inside sheetmetal), but with mine they are 2 separate pieces that let the elements in (about a 1/8-1/4 inch gap between the 2)... the doors dont leak when its wet (doesnt get dirty at all inside the door) but in the winter time the speakers sound off for the 1st 10 minutes or so (which im sure isnt good that im playing them while they are like this)... sounds to me like theres some moisture getting in and freezing...

is the only solution for me is removing the speaker baffles when its warm and just putting them back in for the winter? or will i be able to tune the resonance out with the eq

thanks

 

Try punching a series of holes into the rear of the foam baffle.

 

Wouldn't that defeat the purpose of the baffle for keeping moisture out?

 

most likely no, but the level will go down hopefully it wont be as annoying. Polyfill may help or hurt BTW

[ August 18, 2005, 05:47 PM: Message edited by: JohnVroom ]

 

I have the same problem.
more deadening more deadening

 

same problem b/c you have foam baffles too or just that problem in general?

as for deadening... there are 2 layers on the inside door skin and one on the outer... i would like to deaden the inside of the foam baffle but i could barely get the speaker in now...

as for the polyfill, it could be that... my brother has a set of components in his doors (traditional sealed metal doors) with the foam baffles... his do the same but not as bad... so i guess i could try doing that... could it possibly be the deadening inside the foam baffles thats causing it?

 

Everything is a comprimise when it comes to car audio. By punching holes in the back you are allowing the back wave to escape out of the baffle. You wont have direct water contact this way.

 

I was going to say the same thing.

 

well i dont have a problem with water dripping down on the speaker... there are a few things in the door already that prevent that from happening... my problem is during the winter where the speakers seem like they are freezing... kind of locking the voice coil or preventing movement til they warm up...

if i do cut the bottom of the baffle, do you think it would help in the winter if i covered that hole with the stuff they use in black stuff they use in gardening? its the not really a mesh but a kind of screen they put down before putting plants in or when doing little landscaping in a yard... dont think it would help the moisture thing in the winter though...