sealed the wall. still louder trunk open.

[shpatb 10+ year member]

I like the concrete idea, hell, just make a sub box out of concrete.

 

[keep_hope_alive Premium Member]

doing a concrete box is easy. make a box out of OSB. make another box out of OSB around that one that is 4-6" larger but open on the sub side. (OSB is made from resin-soaked wood fibers in alternating strands - it is inherently resistant to moisture, i.e. concrete/water). mix and pour concrete in. now you have a box where 5 of the 6 sides are 4-6" of concrete.

 

[Falcons 5,000+ posts]

Make sure every possible hole is covered. Check the side panels, and rear deck. Then like what was said brace the **** out of your back wall.

 

[basscort2009 5,000+ posts]

impossible to get it to NOT be louder with the trunk open. ive seen multiple trunk systems sealed off, including mine, and no amount of foam and panels can keep the pressure from going to the trunk and "cancelling" out. im pretty positive all sealed off trunk systems are louder with the trunk open. just my experiance.

 

[keep_hope_alive Premium Member]

^Agreed. either concrete or live with it.

you should still reinforce the box regardless. flex = lost dB's

 

[CAT MAN 5,000+ posts]

sealed every single hole possible and it freaking still does this........its killing my 0-1800 score.

 

[basscort2009 5,000+ posts]

my score was always louder with the trunk open so why not just leave it open and be happy with the gain?

 

[Julian 10+ year member]

sounds like some horrible cancellation.

 

[CAT MAN 5,000+ posts]

my score was always louder with the trunk open so why not just leave it open and be happy with the gain?

because 0-1800 is pure sealed

sounds like some horrible cancellation.

i think it could be my port idk

 

[basscort2009 5,000+ posts]

in that case you need to unseal the trunk and run in like usaci ppl and do subs all the way to the back of the trunk and put batts and amps on side or in spare tire well

 

[CAT MAN 5,000+ posts]

in that case you need to unseal the trunk and run in like usaci ppl and do subs all the way to the back of the trunk and put batts and amps on side or in spare tire well

yeah chris (aka spl kid) was telling me this when i met him but i cant bring myself to do it. and id like to have a wall. just looks better IMO if it would friggen work ....

 

[Papermaker85 5,000+ posts]

Sounds to me like cancellation..

 

[CAT MAN 5,000+ posts]

Sounds to me like cancellation..

but where is the issue. where could it be. give me an idea.

 

[Papermaker85 5,000+ posts]

Most Lilly between the port and woofers phasing..

I'd try to build a deeper larger box to act like a wave guide..

Search for acoustic coupling..

 

[CAT MAN 5,000+ posts]

its a 2 common wall port but im going to a 3 common wall port on the drivers side. see if that fixes it