Need help in sub box sizing

[rb70383]

Well I emailed cerwin vega and they had the specs, or at least the ones online. However it also listed that the perferred enclosure is ported with an internal volume of 1.59 cuft, with a single 3" port 8.1" in length that tunes to 35hz. I just dont get the result coming up from the online calcs?

[nekkidhillbilly]

Well I emailed cerwin vega and they had the specs, or at least the ones online. However it also listed that the perferred enclosure is ported with an internal volume of 1.59 cuft, with a single 3" port 8.1" in length that tunes to 35hz. I just dont get the result coming up from the online calcs?

that makes no sense either most 10s take a minium of like .5 cf i just cant see it being that small unless it a shallow mount or some bs

[sniper]

that makes no sense either most 10s take a minium of like .5 cf i just cant see it being that small unless it a shallow mount or some bs

I am not sure what you are looking but if CW "recommended 1.59cuft ported then it only makes sense that sealed is going to be smaller. 1.59cuft, was that for a single sub or two?

Having said that, your not going for an all out SQ system, and those specs may or may not be right. But with only a sub that is rated at 250w, just build a box that is 1 cu ft internal. And run with it. Don't get all beat around with the specs, yes they are important to a certain extent, but with what you are doing, not so much.
Most of the online calculators are crap.
Keep in mind that if they are old subs, you need to check the surrounds for wear and tear.

[rb70383]

I am not sure what you are looking but if CW "recommended 1.59cuft ported then it only makes sense that sealed is going to be smaller. 1.59cuft, was that for a single sub or two?

Having said that, your not going for an all out SQ system, and those specs may or may not be right. But with only a sub that is rated at 250w, just build a box that is 1 cu ft internal. And run with it. Don't get all beat around with the specs, yes they are important to a certain extent, but with what you are doing, not so much.
Most of the online calculators are crap.
Keep in mind that if they are old subs, you need to check the surrounds for wear and tear.

Only for 1 sub. My dad had them re-coned for me a while back. Completely forgot about it till I found them. They look brand new. I want to know what they are designed for so I can build a box that works well with them. Plus using it to practice some fiberglass work so I wanted to get a range that will work in the space I have available.

[duckmanjbr]

Forgot to mention the fiberglass.... If you're planning on working the box out of fiberglass I'd recommend two things. Fiberglass doesn't work w/ internal reverb as well as HDF or MDF. If you want to use fiberglass I'd recommend at lease one side be wood and use some dynamat inside on no more than three sides of the enclosure if you can. You don't need more than three sides and if the sides aren't flat even using it on one side will help you out a lot! Hope this helps... Check out my last build.....

[rb70383]

WOW that looks nice. Got a link to a build? I built this box for my truck. Did ported as that is what the speakers were said to work best with. It was kinda boomy for me. Louder volumes and the port started chuffing. Swapped speakers, one id blow, and selaed the ports with a cap on the inside. Sounded much better then. The sub box is only half across. I needed under seat storage. I also raised the rear seat 4" for the required volume. I need to redo it as the raised seat is becoming a pain.

I want to incorporate this new box, not the one in the ram, into the center console. I will use mdf where ever possible and fiberglass to fill the irregular shapes.

On the ram box, it is all mdf except the bottom where I used fiberglass to corform to the floor of the truck.

[duckmanjbr]

Be careful doing a center console sub-box. It'll work good in a reg cab but if it's an extended cab you'll probably get some wave cancelation. You'll alway get the best performance when you place the sub as close to the rear as possible. You really need to use the natural acoustics of the car/truck to get the most performance.

The truck looks nice. The box looks really big though. You can get the big stuff in the small space you just really need to use some imagination! Here's some pics of my truck box. I had 6" total height in the front so I had to get really imaginative! I wanted everything hidden and max volume cause the truck was kinda loud. Had to water-cool the amp because of no air circulation under the seat but that and a little fiberglass and it was unbelievable! 12's under the seat at stock height! Each box was a little over 1.2 cuFT and the only HDF was the front and top pieces. Everything else was glass. :D

[nekkidhillbilly]

http://www.thielesmall.com/include/d...ID=197&dtype=1