The Ultimate Subwoofer Enclosure

[Simmsled]

I am currently designing an enclosure on Unigraphics for the 2 subs that I potentially will buy. Image Dynamics IDQ15D2 V.2. OR IDQ10D2 V.2. I will be using the large ported enclosure for frequency response roll off (-3db point) at 16hz. The port will be tuned to 30hz. I have no idea how designing it in Unigraphics will help me, but I will get the airspace for "the golden ratio". More to come soon...

PS... PoorManQ, you inspired me to do this.

[Simmsled]

PoorMan, what did you do for bracing in your home sub?

[Looneybomber]

PoorMan, what did you do for bracing in your home sub?

Measure your inside dimensions and cut a board that will fit inside that touching all 4 walls, but add an extra 1/2-2/3" to it. Now it's too big by 1/4-1/3 of an inch (whichever you chose). Reason being, use a dado joint to sink it into all 4 walls of the box. That is a bagillion times stronger than a normal butt joint and dramatically increases your room for error if you cut the bracing board just slightly too small here and there. You will also want to cut out 4 square/rectangular holes in the bracing board.

As you can see in this picture, they used many braces (one between each driver). You can also see they cut circles into it instead of squares. It's all the same.

Here you can see how they cut the dado grooves into the side wall of this enclosure. It's totally different than the one pictured above.

Now you can see the complicated bracing and how it fits into those joints.

[Simmsled]

I am going to cut everything with a cnc machine. I am going to design in the dado grooves. Nice. One of Dr. Small's students (you may know him from Thiel/SMALL parameters) will be helping me design this enclosure for the sub. Dr. Small was a professor at U of Minnesota. It is going to be sweet. Since I am saving money to buy this 94 s13 convertible with 70,000 original miles, I am going to be installing this into my Altima. I most likely will be using the Precision Power A600.2 Art Series amp that I have had sitting around for years. It is still in it's original box. I have never used it.

I am going to sell my Eclipse Aluminum 12s. I have 2 and they are 6 ohm subs. They were hand picked at Eclipse for demo cars. I have the documentation from Eclipse to back that up. If anyone would like them, let me know. I will sell them CHEAP.

More to come...

[Slipstream]

How much for the 12"s, how much power will they need?

[Simmsled]

I bought 3 brand new, retail was 400 apiece, I sold one of them to my friends for 90. If you wanted both id do 75 bucks apiece. They need power, they are beefy subs. The more the better. I would put at least 250w per sub. I am selling my sub amp too. I got it thru JBL in a partial sponsorship. It is a JBL BP1200.1 monoblock class D amp. We bench tested it at 1378w @ 13.7 volts about 2 years ago with a 2 ohm load. With a 3 ohm load (with the 2 Eclipses) it was bench tested at 1023w @ 13.5 volts. I am getting rid of this setup because I am going for a partial sponsorship (or full) from Image Dynamics. The sub I will be using will blow up if I use that amp. I would sell the amp for 200 to a Nico member. They go for between 250 and 300 on ebay. If nobody wants the stuff on Nico, I am probably going to put the stuff on ebay. I just have way too much car audio stuff at home and I dont want to pile any more up. Here is the epinions link:http://www.epinions.com/615059...views

[Simmsled]

All that equipment new was worth $1,500. I'd sell it all for $350 to a nico person. They are in perfect working order. The subs have no tears. One has a blemish on it about the size of a nickel where I threw a bunch of clothes in the trunk and my cell phone charger accidentally was back there. The charger touched the aluminum cone and it left some dot marks. The amp doesnt even have a scratch on it. It is perfect.

[Looneybomber]

Hmm...I was actually thinking of putting 2, 12's in my explorer. I have an MTX 2300x. Bridging it to a 3ohm load would make it hot, but could handle it. I need a digi cam first though.

[PoorManQ45]

Sorry, I missed this thread.

For bracing I used the left over pieces of MDF, then I edge braced with 1x2s.

depending on the size of the enclosure you should build it with about 0.5~1ft^3 extra to account for the volume that the driver, amplifier, ports, and braces take up.

I've seen some guys go to extreme and leave thenselves like 3ft^3 extra so they could brace the crap out of it. It's like, damn man, you could fit a kid in there and still have enough air volume. LOL

[jr_ss]

I am getting rid of this setup because I am going for a partial sponsorship (or full) from Image Dynamics. The sub I will be using will blow up if I use that amp.

Image Dynamics is the shiznit. I've been running their subs for 3 years now. They slam and love ported boxes. I am only running the IDQ V2D2'S. The ID MAX's are insane...