Ported box sq. port speces

If it's a single voice coil, it's probably 4 ohms. the sub only handles about 175w RMS, so don't expect earth shattering bass to come out of it. A single voice coil is easy. Positive from the amp to the positive post of the sub, negative from the amp to negative post of the sub. This sub sounds lots better if it's in a sealed enclosure. A ported enclosure allows too much cone movement, heating up the coils, and the sub fails prematurely. Hope this helps.

For optimal performance there is really only one size for the box .Firstly, you get two different types of subwoofers, an open air, or closed air sub. If it is an open air sub ( hole with mesh in the center of the magnet) no ports are required, and the box should be sealed on the inside with silicone sealant. If it is a closed air sub ( no hole in the magnet) you need a 50mm port about 120mm long. Box size will be 11 inches x 11 inches x 11 inches. Hope this helps

the cheapest way is to get a prefab box from sonicelectonix.com get it ported im hittin 130db with mine in a 2.3?cu ft center port(one big chamber). litterally my fiance cant drink anything cant smoke a cigarette, and all hell breaks loose when i have the window cranked and throw 400w rms at the pair so bout 200 ea. and that my friend makes my ears hurt very bad and they actually hit harder than my older style RE audio subs.

If it is an open air sub ( hole with mesh in the center of the magnet) no ports are required, and the box should be sealed on the inside with silicone sealant. If it is a closed air sub ( no hole in the magnet) you need a 50mm port about 120mm long Box size will be 11 inches x 11 inches x 11 inches

10" subs need 1 cubic feet. 15" subs need 2.5 cubic feet. install them on its own volume of the box...

Hello joseph_delac,

MA Audio's website has the recommended box volume and port size online here. A ported enclosure needs 3.0 CuFt of internal volume and the port should be 48 sq/in and 14.5" in length. A 4X12" rectangular port would give you the recommended 48 sq/in. Using 3/4" MDF, a box 16X18X25 has an internal volume of 3.25 CuFt allowing .25 CuFt for the sub and port displacement.

Hope this helps.

Hello pelikant75,

The best answer depends on your budget for the sub(s) and exactly what kind of sound you are looking to get. Your amps RMS output at 4 ohms is 200 watts and at 2 ohms, it's 400 watts. I could not find that it was 1 ohm stable.

If you are looking for the absolute best bang for your buck, I would highly recommend a pair of entry level MTX 10" subs, model 4501-04, currently priced by Crutchfield at $49.99. And if you buy a pair, they throw in a free Bass Slammer BS210S sealed enclosure. The MTX's power range is 112.5 to 225 watts each, right in there with your amps output. 2 of them in parallel give you a 2 ohm load, just right for your amps best power. And they sound great. You simply can't find a better deal for $100 bucks!

If you want a little better SQ, a pair of Rockford-Fosgate P1S410's should be considered. Again, going to Crutchfield, they currently have this one "BOGO" (buy one get one) for $99.99. You will have to provide your own box, though, no free one with these.

Finally, if you want the best SQ, and your budget allows, consider a set of Alpine SWR-1022D's for $179.99 each. These have dual 2 ohm voice coils, allowing you to series the coils and parallel the subs, resulting in a 2 ohm load to you amp just like the MTX's and RF's recommended above. You will probably want a somewhat larger enclosure for the Alpines as well as a fatter wallet. Your amp is right at the lower end for powering them, so they probably will not be as loud. But they will sound good.

One thing we haven't discussed is the box. The enclosure is just as important, perhaps even more important than the sub(s). More accurate bass is generally produced from a sealed enclosure. A ported enclosure will be louder, but at the expense of sound quality. And whether it's sealed or ported, the enclosure needs to have enough internal volume for the particular sub you are planning to use. A sealed box in the range of .75 to 1 cu/ft will be OK for any of the recommended subs. Add about 15-20% more volume for a ported box and keep in mind that the port needs to be specifically sized for the frequency for which it is tuned.

Hope this helps.

Depends on the type of music you listen to and the type of sound you want out of the box. If you're looking for "as loud as possible", you'll probably want a ported box, as this will make the output of the sub peak at a specific frequency and drop off at others. If you wanted more of an even response across many frequencies, a sealed box is probably best. Kenwood has recommended sizes in the owner's manual.

Optimum Vented Box: 4.5 Cu/Ft
Round Port Diameter: (3) 4"
Square Port Area: 37 Sq/In
Port Length: 17"
Optimum Sealed Box: 1.75 - 2.5 Cu/Ft these are your options as you can see if your short on space your sub will love a 1.75 to 2.5 sealed box but if you have THE right ported box you will get better bass with less power but at the end of the day that sub will Pump wish i had one good luck hope this helps you info from manufacture cheers bronson