Design for two 8's in a vented enclosure - 1998-2007 silverado extended cab

[eskibro 10+ year member]

So, I was playing with Google Sketchup today, and came up with a vented box that fits under the seat of my 2003 silverado extended cab. Raked the subs in to protect them from wandering feet and to experiment with reflecting sound waves off of each other (any input?). Ports in the center over the floor hump. I just threw them in there, so they're not to size yet. Forward firing everything. I'm just waiting for my dad to get back from Phoenix with his laptop. I have a copy of Autodesk Inventor on it that I'll use to remake the box in. That way I can get perfect volume calculations and what-not. (macs suk for that reason)

View attachment 26537547

Click to read more...

 

[eskibro 10+ year member]

Oh and if anyone has a good serial code for Bassbox 6 pro, I'd love you longtime.

 

[eskibro 10+ year member]

If anyone wants me to do a design for them, I'd be perfectly happy to.

 

[ThatChevyGuy 5,000+ posts]

Do the ports to the sides if you have room

 

[eskibro 10+ year member]

Do the ports to the sides if you have room

Is there a benefit? What effect does it have on gain and sound quality?

 

[mylows10 5,000+ posts]

heres View attachment 26537559View attachment 26537560mine for my 97.with these

 

[Serpent710 10+ year member]

fire your ports toward the sides firing off the side/wall. ive noticed gains in every box doing that in my truck.

 

[eskibro 10+ year member]

fire your ports toward the sides firing off the side/wall. ive noticed gains in every box doing that in my truck.

Do I have to figure in some of the wall area as port area when tuning?

 

[ThatChevyGuy 5,000+ posts]

aero port it

 

[mylows10 5,000+ posts]

aero port it

i am next box i build for my truck

 

[Canaan 10+ year member]

I do a FAR less complex design. Its 2 separate boxes, subs and ports firing toward the sides, one box on each side of the transmission hump.

Also, by doing 2 boxes you leave the transmission hump open to mount an amp under the seat.

And this setup SLAMS. I tweak the boxs to work with whatever sub I'm using. Usually do Sundown SA8's, DD508's, or DD1508's. I just change the port area and tuning for each sub. The boxes range from 0.5-.7cuft net depending on the exact build.

 

[Iosias 10+ year member]

@Moble Enclosurs ; Hes design two seperate underseat boxes for me. SA v1.5s and now V2s, the box for 1.5s sounds amazing and the v2s im sure will be just as impressive.

 

[eskibro 10+ year member]

Well, I downloaded Autodesk on my Macbook, and am currently running it through Parallels. I remade the box and found out i have 2.53ish ft^3 of internal volume. Using that, I modeled the ports, and tuned the box to a hair under 32 hz.

View attachment 26537579

Consruction is all 3/4" MDF except for the port walls which are 1/2"

 

[ThatChevyGuy 5,000+ posts]

thats not what we meant by ports to the side

Watch this

http://youtu.be/cbIB5ng1FRo

 

[eskibro 10+ year member]

thats not what we meant by ports to the side

Watch this

4- Sundown Audio SA-8's - YouTube

Haha, I know, I know. But I couldn't get the length and proper port size needed running them along the back of the box and out the side.