Hey all this box setup isnt going into my maro i will be getting a stealth box. It will however, be for my jeep cherokee. Now, my question is, is a sub box the same reguardless? I mean a 89 dollar box versus a 59. I am not looking for anything amazeing but i need something to hold my 12 and keep it happy. I went to crutchfield and found 2 enclosures that would work for my setup.

It is an elemental designs package:
13Kv.2 Dual 2 + (1)eD NINe.2 Amplifier $250.00 Pre-Order* / Regular Cost $400.00 -
We recommend 1.0cF Sealed before displacement OR 1.5cF tuned to 30Hz for optimal results.


This is the amp: NINe.2 " $215.00* / MSRP $250.00-
100x2 @ 4 ohm, 150x2 @ 2 ohm, 400x1 @ 4 ohm

This is the 12" sub:13Kv.2 Dual 2 $125.00* / MSRP $145.00 -
150/550WRms. - 0.6/1.1cF Sealed - 1.2/1.5cF Vented

The boxes i am looking at are:

http://www.crutchfield.com/S-tL6VkRs...0&I=044QLHCL12

69.99 q-logic type 1
These boxes are made of rugged 3/4" fiberboard (which resists flexing and has anti-resonant properties) and are covered with durable gray carpet. The spring clips will accept bare speaker wire and pin connectors. Polyfill and screws are included. (Mounting hardware and grille not included.)Perfect for most vehicles, except pickup trucks. This box will fit in trunks, hatchback spaces, and the rear area of most SUVs and vans.Key Specifications:
holds one 12" subwoofer
0.88 cubic foot internal volume
dimensions:
cutout: 11-3/16"
width: 14-11/16"
height: 14-1/8"
bottom depth: 13-3/8"
top depth: 10-1/4"



Or this type 4. I think i might opt for the type 4 since it has more included with it. However, it costs 20 bucks more for not a whole lot.
http://www.crutchfield.com/S-tL6VkRs...50&I=044QB1123

89.99 q-logic single 12 sealed type 4


Q-Logic's QB-112.3 bandpass subwoofer box is designed to house a single compatible 12" woofer. It's made from 5/8" medium density fiberboard for strength and is impeccably upholstered with durable grey carpet. You can watch your subwoofer work through the large Plexiglas window. Screws are included for your subwoofer. The box comes with wires for the internal connections (with quick-slides attached) and a terminal cup with gold-plated binding posts.The port tubes are pre-installed. In most cases, you will need to cut the port tubes to length to tune your box, and detailed instructions that will help you determine the proper lengths are included. This box will fit in trunks, hatchback spaces, and the rear area of most SUVs and vans. Key Specifications:
houses one 12" subwoofer
5/8" medium density fiberboard
spring post terminals
0.98 cubic feet internal volume (ported section), 0.84 cubic feet internal volume (sealed section)
box dimensions:
width: 16-5/16"
height: 16-7/16" (16-15/16" including port flanges)
depth: 16-1/2" warranty: 1 year


What do you all think? the type 4? Or does it not really matter which one?

 

Keep in mind that all q-logic boxes are made out of particle board. They try to disguise this by saying "fiberboard", but it's really just particle board and not mdf. All wood composite materials can be generically categorized as "fiberboard" since trees have fibers and therefore when you chop them up and glue it into sheets it's still "fiberboard".

But more specifically, there are different classifications of these composite materials. The less dense material with bigger chips is called particle board (commonly called chip board). Then you have mdf, which is more dense since the particles are dust size and makes really good speaker cabinets. There's also hdf and medite, medex and several others, but I won't go into those.

I don't really consider anything from q-logic to be rugged because they don't use any fasteners in their boxes. And thats why they crumble and shake apart over time.

Sealed versus bandpass is up to you. It's harder to get good sound out of a bandpass enclosure, but they are insanely loud. In a suv I think it would sound pretty good. I know several guys running bp boxes in explorers and tahoes, etc and they like how it hits.

 

What would you recomend? I just went to crutchfield and did a general search. I will prob hit up best buy and see what they have (i will prob have them do the install too) Yeah, i heard sealed is better if you are placeing it in a trunk or something. I am not looking for anything great, but i am not a car audio wiz and just figured a box is a box. I guess the type 4 includes terminals and such. I dont think the bandpass box did. I am just looking for a no hassle box that i can toss a 12 in and have no trouble connecting it up to the amp.

 

For an enclosure I would either have Megabass out something basic together for ya, or if you have some craftyness to ya, go spend ~$50 and build one yourself.

Home Depot Shopping List:
1 - 4' x 8' 3/4" MDF sheet
1 - tube of Liquid Nails
1 - Box of 1.75" Drywall screws

I believe ED has some enclosure designs already specified, or it's really easy to figure out how large/small you want it.

Just cut the wood out, pre-drill all the holes (starter holes) and glue/screw it together. I also run a nice bead along all the internal seams with the liquid nails to make sure everything is sealed nicely.

If you want to carpet the box, talk to a local stereo install shop, they will typically let you buy carpet from them, it's a special no-backing carpet that's easy to work with. Then just use some 3M adhesive and glue the carpet to the box, being sure to butt all the seams together nicely.

 

Yeah i really dont have the time to build my own box. I went to best buy and circuit city and all they have is the bandpass boxes from q-logic. I think i might go for the type 4 q-logic from crutchfield. For the bandpass boxes they dont have the terminals etc. Although, i might just have the tech guys at circuit city install it for me anyway saves me the time. Bandpass boxes at circuit city are on sale for 45 dollars after mail in rebate. Sound worth it?


ED boxes range from 99-230 for a box for a 12" sub. I dont think its worth it

 

I don't care for BP enclosures myself. By design they mask distortion. You can blow your sub from abusing it and never know it until it's too late. Another problem with BP boxes is that they are VERY critical of matching the subs to the tuning of the enclosure. Sealed boxes on the other hand are very forgiving in this regard. They also sound the best IMO and they take up less room too.

 

I agree with LS1 Rulz on this one as well, BP boxes are typically poor at performance, atleast most are. The only ones that I've everd heard that sounded good were wones that were custom built for the drivers, and even those I didn't like.

Sealed is really your best bet, with a Tuned Ported being 2nd in line.

Look other places than CC or BB, they carry the cheapo crap and generic stuff... go check out some real stereo shops, ones that design and build car audio equipment for a living; most of those shops will have some standard sealed enclosures sitting around that are build properly out of 3/4" MDF and nicely carpeted and sealed. Pick one/two of those up and use that instead. Your ears and subwoofers will thank you.

I guess your taking a very nice set of subwoofers and just throwing them into a crappy box/enclosure and expecting them to sound great and being disapointed is what we don't want. I will tell you that the proper enclosure can make a crappy set of $20 subs sound/perform wonderful; just the same as a crappy box/wrong box can make the best subwoofers ever made sound/perform like crap.

 

Yeah well, i really dont know where to look for a box. I am just trying to list some stores that do car audio. I dont know a whole lot about boxes i just figured they were all the same (something to hold your sub). All my local car audio shops are owned by punk kids that dropped out of a local tech school. I know because i used to chill with most of them back in the day. Plus most are very expensive for what you get.

So if i wasnt to get a tuned box the type 4 sealed enclosure will work?

 

www.subthump.com

there ya go

 

I would bet there is atleast 1 or 2 shops around that are not owned by people you know, but by people who actually know what they are doing. Check the yellow pages and do some phone work. Basically tell them you are looking for a fairly standard sealed box for a 12" subwoofer, heck, even tell them the sub you are using; if it's a good shop that knows what they are doing they should know ED as a mfg atleast.

Then just ask them what they make their boxes out of and make sure it's 3/4" (or thicker) MDF.

I'm not a fan of Q-Logic boxes, at all.

 

The box is for my jeep, not my maro. All subthump makes boxes for is f-bod, vetts and trucks. No SUV enclosures

 

the spacing is what you need to look at. if you put a sub designed for 2cf of space into a 1/2 cf box, you're asking for a burnt coil or blown sub, if not at least horrible performance. cubic feet is crucial. if you can make the box deeper and not as tall (assuming the speakers are facing you), this will allow the air to compress and then force the sub to push out harder. i really dont want to get into the physics of it, but that's the general concept. if there's not enough air in the box, they sub will work against the box and burn more power just to work. power is another thing you need to be considerate of. the rms power is the average power needed to push the sub...in other words you need an amp that can run that power constantly. estimate an amp that has max power of about twice the rms. that should be enough to run without working the amp or your alternator

 

Thanks all...Well, none of the boxes i have listed will fit my application since i need atleast 1.cf sealed enclosure for the box..lol

Does anyone know of anyother online places to get a box other then crutchfield?

 

I have always made my own boxes. It's not that difficult really. For a 12" sub (ported), you want approximately 2" x 4" x 12" of ported area with about 1.5 to 2 cu. ft. of box space. You can vary the shape all you want, as long as it covers about 96 sq. inches of ported area. Using this recipe I've made quite a few ported boxes that sounded excellent.

I also don't believe in anything less than 3/4" MDF for any application. And like others said, use some wood screws to hold it together. I glued all the sides, then wood screws, then I bought some clear window caulking at Home Depot and sealed up all the joints on the inside of the box. Do it this way and the box will be solid as a rock.

 

Yeah for this sub, i need a sealed and vented enclosure that has 1cu of space. I would just make my own but i dont have the time. Plus when it has to be vented and sealed it gets to be a PITA. So i think i am just gunna buy http://www.crutchfield.com/S-koPoFQd...0&I=044H1212SE
this sealed one. Even though i dont like the front but what ever for 95 bucks what can you do

Here are the stats:The box comes with a grille (with screws), a set of spring posts, a port tube, and speaker leads with quick-slides for easy connection to your woofer.

Thanks to an external port plug, it's easy to switch between use as a sealed or ported enclosure. (Q-Logic even provides a chart on trimming your port tube to the proper length.) This box will fit in trunks, hatchback spaces, and the rear area of most SUVs and vans. Please measure the planned installation location to ensure fit.

Key Specifications:
for one 12" subwoofer
1.25 cubic feet internal volume
dimensions:
width: 16-7/8"
height: 14-1/8"
bottom depth: 15-3/4"
top depth: 9"
1-year warranty