Thats why you cover it and polyfill the guts..brings out the bump....but only do this if you have absolutly no desire to add/ modify/lose cargo space or otherwise replace half to all of the stock system..Ive done this AND added a 10" POLK/box-Alpine amp(sub only) and it does good with the somewhat stck sys,,(infinity doors ), but have a box floating around the back end.

 

3 M tape....

Any body know what the out put is on our stock amp and sub woofer ??

 

I did do that but it still sucked imo. It helped the bass be deeper and less dunk dunk but it did nothing to increase output and still did not allow the sub to be heard while driving with the window down. It still was not fully solid though and still suffered from the box walls flexing.

I currently have a 1cft ported fiberglass box built into the factory location. But I also cut out some of the metal of the inner skin and built a pocket so a subs magnet could extend into it. The box was built for a 10" sub but I have been running a single Polk MM 840dvc sub in it since I had it already and never have decided on the 10 I want. The funny thing is is that the Pok does not need this extra depth to fit lol.

 

The stock system seriously lacks anything beyond..well..stock...My LS doesnt have any kind a sub so the Premier does sound better then that..but will never compare to even a low cost aftermarket head unit/ speaker set up, especially if youve ever had an aftermarket set up in a previous car..Ive yet to hear a stocker that can compare to an aftermarket setup..and its mainly the cheapie low wattage head units..though they are getting better...the aftermarket companies would probably have plenty to say if the auto makers actually made a real audio system...but then most people are tone deaf and dont care what it sounds like..too busy yakking and texting anyways..

 

So the dual 4ohm Polk just arrived, but will be a while before an install, its 9F here in WI. I can live with the bass from the factory box being weak, I plan to add subs on a seperate output that can be turned up/down/off independent of the factory system.
Currently wrestling with the door speaker replacement, as the adapter brackets Crutchfield sent do not fit. Anyone know of some that do fit the upgraded system mounts front and rear?

 

Are you building a seperate box for that Polk? And using a seperate amp for it?

 

Do you have pics or a link to the adapters they sent?
I've always heard crutchfield is good to deal with.

 

http://www.crutchfield.com/p_142SAC6...-Brackets.html

Used the car selector feature, but it seems that they just send these out with just about any speakers for any car, judging by the comments.

I'm going to make the Polk fit in the factory box, knowing full well it is too long, (4.0in) with some fabrication, powered by the factory amp. As for reenforcing the box... not really sure how to go about that. I'll post a diagram/outline of what I'm attempting.

 

yeah..but your trying to us a dual 4 ohm sub...it was clarified it was a 2 ohm dual stock

 

This seemed to support the dual 4ohm choice?