First topic message reminder :

I'm going to start my build in my 2008 Chevy Colorado extended cab. I was curious if anyone else has done anything with on of them. My order for a pair of Audioque HDC3 18's and a 3500D should be here tomorrow. I plan on using the pair in 11.5 cubic feet net before sub and port displacement. I'll be going with a pair of 6" ports per sub.

To add one more thing. My plan is to use a slot port that is the entire width of the enclosure so it would be 48wide x 3" deep x 10.75 long to give me a tuning of 35Hz, does that sounds correct after factoring in end factor?

OK guys, I have two sheets of birch ply and six 4 foot wooden 1.25'' dowels sitting here waiting to be cut. Any input/comments/suggestions would be good now LOL

Victim: 2008 Chevy Colorado



Equipment: Two HDC3 18's, AQ 3500D, AQ 4x90, Hertz HSK163 and a couple batteries.



Here are some pics of what I did when I first got the truck:













I have about 200 square feet of deadener, 4 yards of acoustic foam and a few hundred zip ties and mounts along with many feet of Techflex.

Here are some progress pics of the enclosure. 3/4" Birch ply, 1 1/4" wooden dowels and the SMD patented 45 in the port. 10 cubic feet NET tuned to 35Hz

wow lookin good

keep up the great work loving it

Can't wait to see it in the truck.

Well, this sucks. Put the enclosure in and in my infinite wisdom, my seats sit right in front of 1/3 of the port esentially sealing it off. Anyone want a wall 10 cubes NET tuned to 35Hz? LOL Time to rethink my strategy...might have to use more and smaller subs to get the port firing up!

try it and see what happens.

OK, so I did some trimming on the wall and made some room in key places and it moved back enough to make me happy. I will have to make some filler plates for a couple areas, but it looks like it might work.

cut the head rest off Thats what i did to mine. but sorry no pics.

just leave enough fabric to sew the flap over.

Well, ended up selling the AQ 18's and bought 10 10's. Here's the enclosure.



I went to the Shades event and did a 147.6 with track #11 on the dB Drag DB Jams volume 9 CD which was a 40Hz down to 30Hz sweep. My CD player skipped at any tones higher than 40Hz and I had my crossover set to 63Hz lowpass at 24dB/Octave slope...wish I would have remembered to change that! I think the setup has some potential.

What subs are those?

I have a 1996 silverado ext cab with the backseat taken out and my subs and port are faced down at a slight angle so the sound waves roll off the floor. i have tried subs/ports faced forward and both faced up(with adjustable ports) my recent set up sounds best personally. I compete in mod 1001-2000 and sb3. Hope this helps.