Look at my post #13 for a good solution.

 

Jul audio makes a small enclosure with the 8" sub you mentioned that fits behind the seat

 

Darren sent me his stock sub Thanks!
the box measurements are 24 1/4 long X 10 1/4 tall
bottom depth 6 1/2 tappers to about 5

 

Dual voice coil sub

 

Cool! Well wait to see the "installed" pics.

 

stock box seems kinda cheap plastic I dont think upgrading the woofer only would be a good option

 

No, it is very easy to build your own enclosure to fit behind the seat, get a 10" speaker and an amp, tap into rear main speaker channels for source and you're done. Most sealed enclosures need to be within .66 and 1.00 cubic foot (interior air volume).

 

Could try it, I don't think you would be that happy with the results.

 

has anyone measure the space under the rear seat if you removed the storage box?

 

Did you ever swap out the factory sub ... If so How did it sound .

 

I changed the factory sub and amp out reusing the OEM enclosure....sounds pretty good.

I changed the sub out with a MB quart shallow mount, dropped right into place. I did put some polyfill in the box as well. Replaced the amp with a Fosgate PBR 300x.1 with the remote, again fit right where the old OEM unit was mounted on the box.

I'm not going to blow any windows out but the improvement was very drastic and did not require removing the seats to get the box out, just lay the seats forward, take out the four bolts and work the box out.

 

MB quart shallow mount, What model?
polyfill in the box as well...What is this?
Forgive me but I am stereo illiterate to the point of retardation...I like plug and play

 

Polyfill is the fibrous material that looks like cheap pillow stuffing and is frequently used to simulate ground snow at your local indoor mall Santa's Village.


I would also like to know what the model numbers are for the sub and amp you used for the direct replacement using the OEM box. Thank you as it will be very helpful.

 

Sub model is RLP204, $69 at sonicelctronix.com
Amp is PBR300X1, $159
Punch PEQ (small equalizer really works) $29
The polyfill tricks the sub into thinking there is more air space in the box than really exists..dont how it just does.
set up is really easy, I dont recall the wiring color match ups, do a search on the site there is somone that put together a good write up on the install of the amp using the stock wire harnes...the signal is taken from both rear speakers....
pair this up with the infinity speaker upgrades and the difference is great. BTW I used the blue trailer wire clips to splice in the back door tweeters to the leads into the rear infinity speakers, worked great, didnt have to llose the tweeters with the speaker upgrade. jusst clip them to the speaker lead right befor the connection to the speaker.

 

Very cool. Thanks.