Go Fully sealed or 1/2 enclosed for sub?

[dineth]

Hey guys, I jus got a Alpine v12 amp and 12 inch sub. Now i have a dilema. What do you guys would be the best set up for a R33. Like i want to know what would give out punchy bass; a fully sealed and boxed sub box or the standard type sub box (where you can see the sub). Space is not a issue for me cos there is nothing ever in my boot anyways. I am hearing conflicting views on what is the better type sub enclosure. I know with home theathre systems almost all are fully enclosed now days. Anyways i thought id put this question forward b4 i chose one next week. Your opinions will be much appreciated. Thanks guys.

[BOoStEr]

The best type of enclosure is the one that suits the type of sub you bought. If it's an alpine 12"? they come with an installation sheet that recommends what type of enclosure suits it.

Post the exact model and someone should be able to advise you what will work best.

[Fhrx]

It all depends on the type of music you listen too, how loud you like it and how much power you have available to you?

[dineth]

Hey guys, thanks for your replies so far. Well the sub is a Alpine type S sub (12 inch and the amp is a Alpine V power amp and has a RMS of 350 Watts. So its not 2 bad. I like punchy bass and i usually listen to R&b and Hip hop and a bit of house music. So what you guys reckon?

[gts4]

Heya,

I like to have a fully enclosed box as long as the sub isnt free air.

It gives you more rumble bass for the rap,hip hop.

[Al]

When mentioned "fully enclosed" and "semi enclosed" be was reffering to:

Fully enclosed: Front and rear chambers (unable to see sub at all, just looks like one massive box with holes, useally twice the volume of a standard sealed unit)

Semi enclosed: Only has one sealed chamber, able to see either the front of the sub (most common), or the rear (sub fires into the sealed box)

If you have a great designer, and someone that is capable of building a strong box to exact specification, i would choose the band-pass design (fully enclosed). When designed and built properly, these enclosures produce the deepest, loudest and cleanest bass.

Design and build quality is vital.

[dineth]

hey guys,

Thanks for all ya replies so far. I think im leaning towards a fully enclosed sub box. My mate did his one and it sounds pretty good so i will get him to make me a box. he has some kinda fibre fill to insulate it as well. I love my clean bass rather than the "oomf oomf look at me" kinda bullshit. Anyways i also checked out the Alpine website and they got some info on it:

ALPINE Type-S SWS-1241/D 12" Rec Volume for sealed box 35 litres @ 49Hz

also adds:

Sealed enclosure volume includes heavy layers of dacron or similar fibre 'fill' and allows for displcement of the woofer. This is internal volume of box to build for effective in-car performance (Qtc 0.58 - 0.82). Sealed box volumes can also be varied.

[Fhrx]

Sounds like Typical Alpine marketing Hype. :P

[Fhrx]

You'll definately need an enclosure for that sub. The big question is sealed or ported? I am leaning towards a 'low frequency tuned' ported enclosure due to your power levels and music types. How much boot space can you spare champ?

I would probably tune the enclosure to 32hz but the enlcosure will be a little large (like around 1.5cf).

[dineth]

Hey FHrx. thats the question i wanna know as well hehe sealed or ported. I was thinking of going sealed but u may have made me change my mind. i can spare the whole boot since i never put anything in there anyway hehe.

[Abo Bob]

If you completely seal it you are wasting a fair bit of the power of the sub but you will get punchier bass.

[Fhrx]

If you listen to RnB then I would suggest you port the enclosure and tune it to around 32hz.

[dineth]

Hey guys, Finally got my sub and amp put it. It sounds exaclty how i wanted it to. went with the fully enclosed box in the end. thanks for all your comments and advice. If you wanna see pics, they are in the post below.

http://www.skylinesaustralia.com/forums/sh...ead.php?t=34157