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View Full Version : Cobalt Sedan wall vs. rear



Qexler
05-09-2012, 11:16 PM
I have a Cobalt SS 4 door, Running two SA 12s at 1ohm on a 1800.1D audiopipe.
I hooked em up and became curious of how much better they might sound if I faced them forward instead of rear then sealed off the surrounding gap with some great stuff foam. Or leave it rear? I have done a few boxes facing port and sub forward however the output was not too great, however it was not sealed when I made these attempts. Does sealing it off make all the difference? Got some photos to show how small a gap is left from this box in the trunk, below.

http://i46.tinypic.com/2zovy9z.jpg

InFaMoUs119
05-11-2012, 12:49 AM
i own one of these also a xfe sedan and i will also be using 2 sa 12's and having sum1 on here make me a ported box 35" long,20"deep and 15"tall dbl baffle with a 6" port im hopeing if i put 1 end in first push the whole box in that way then turn it once inside the trunk will work...what size box is yours? just curious.

InFaMoUs119
05-11-2012, 12:54 AM
right now im using a hi fonics brutas 1,200w @ 1ohm with dual 12" kicker solo classics in a Sealed kicker made box just for these 12's .75 cu ft per sub which is the only recommended... since the box is so small its really easy to move around i have my trunk fully dynomated and find that is i have my subs facing like yours but push them all the way towards the trunk lid it sounds best.

Falcons
05-11-2012, 12:55 AM
sealing it off makes a huge difference. but you need to make sure it is completely sealed off.

kushy_dreams
05-11-2012, 01:03 AM
With some cars you won't see a gain when doing this. I was metering an sa8 for a itsblown and his brother and we fired the box into the cabin using a 2x4 and some spare coats we had to seal off the gaps and it metered the same firing into the cabin vs firing at the rear of the trunk. The car was a newer Subaru Legacy.

BushJ311
05-11-2012, 01:06 AM
Do either of you want a pair of fiberglass door inserts for 1 super tweeter per door for cheap?
They go right over the front door pocket

rebelfromva
10-14-2012, 01:22 PM
Do either of you want a pair of fiberglass door inserts for 1 super tweeter per door for cheap?
They go right over the front door pocket

Pics?

subzero
01-30-2013, 01:16 AM
did you gan? what is the peak freq of this vehical???

MutantDreams
01-30-2013, 02:03 AM
I have a cobalt too! Ballin to see someone else with a nice system in the same type of car as me... Ya know inspirational 'n' ****

mlstrass
01-30-2013, 06:26 AM
Ran a 15" Q in the wife's Cobalt for several years. Rear firing, never tried it forward firing.

In my Altima forward firing and NOT sealed off is loudest on the meter for USACI and dash/door open. Never got to try it sealed up...

rebelfromva
01-30-2013, 07:32 AM
did you gan? what is the peak freq of this vehical???

43 htz


Ran a 15" Q in the wife's Cobalt for several years. Rear firing, never tried it forward firing.

In my Altima forward firing and NOT sealed off is loudest on the meter for USACI and dash/door open. Never got to try it sealed up...

I actually metered .5 less facing toward in the bolt.

subzero
01-30-2013, 08:37 AM
43 htz



so what was your highest db in what orientation?

rebelfromva
01-30-2013, 09:51 AM
so what was your highest db in what orientation?

46.8 sealed on dash on my tl with my zv3 15. We really only have 2 meca shows a year around here in VA.