looking at doing a similar setup to tjelite's pod dealy in his trunk, with a couple of minor changes (2 subs instead of 3, etc.) but i had a question. i'm thinking about leaving my rear deck untouched and using the stock 6x9 holes instead of cutting a new hole like the single 12" hole his is running through. would that work or should i just ditch that idea and hack the deck up?

 

Try It Thru The 6x9 Holes, Your Not Hurting Anything And If It Does Not Work You Only Out One Ib Board! -

 

I'm running 3 12's through basically a 10" hole, which is about 78 sq. in. two 6x9 holes are roughly 88 sq. in, so, you should be fine.

You still need to make sure that you have the truck sealed fromt the rest of the car as well as possible. Dynamat and 'foam in a can' work well for this, as does clay, MDF, and all sorts of other stuff.

Toby

 

yeah i was going to put a wall up behind the back seats, and maybe do something in mdf so the pod won't be hanging only on the rear deck. other than that i was just going to dynamat the hell out of the lid and floor.

 

I put a piece of 3/4 mdf on top of the deck, with some T nuts in it. The pod bolts through the metal deck, into the MDF deck. Sort of like a big backing plate.

I also put about 12 lbs. of modeling clay between the rear deck and the MDF, to help seal and deaden it. Michael's crafts had kids non-hardening clay for $1 a box. And, it comes in vibrant colors!

Toby

 

well, i certainly do enjoy vibrant colors... i'm sold.

 

Just any clay will do?


Hm... i might look into this clay dealie

 

you are giving up any hope of volume at all, I wouldnt to it.

I tried it and it sounded clena as hell but without the boom behind it I was just left lacking...

 

What sub did you use? Qts of the sub, and the resulting system Q can make a big difference...

And I can't stress enough how important it is to seal the back wave from the front wave. Failure here will kill you bass. This means plugging holes, filling hollow structural members (they often have holes both in the trunk and in the passenger compartment, which will allow the waves to mix). Unless you put a lot of work into it, I will bet that was part of your problem...especially with your pass through. A common misconception is that IB setups are easier than box setups, and that's just not true.

I'll throw my lex on the meter one day, but its far from 'quiet' or 'bassless'

Toby

 

make sure it is non-hardening, and it will work.

Toby