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building a NEW! box

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Old Jul 14, 2004 | 04:42 PM
  #1  
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building a NEW! box

all be useing (2) rockford punch hx2's
Sealed box volume 0.20-0.75 cubic feet

im wanting to build a box like this, not sure if this is going to be enof air space ...
Attached Thumbnails building a NEW! box-sub013.jpg  
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Old Jul 14, 2004 | 04:52 PM
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From: G/C
Car: 1985 trans am
Engine: 5.7 tpi
Transmission: 700-r4 with b&m trans pack
i am doing the same thing,my only problem is makinf sure its completly sealed with no air leaks,it should be enough tho ,i am doing the same thing but with 3 12' xsite comps.
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Old Jul 14, 2004 | 04:57 PM
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thats not alot of space for 3) 12's
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Old Jul 14, 2004 | 11:06 PM
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From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
i'm building a box for the bottom of the well and i'm at 1.39 c ft, i'm just waiting for money for the sub. i'm just doing 1 E12O.44
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Old Jul 15, 2004 | 07:25 AM
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: building a NEW! box

Originally posted by NEEDforSPEED
all be useing (2) rockford punch hx2's
Sealed box volume 0.20-0.75 cubic feet

im wanting to build a box like this, not sure if this is going to be enof air space ...
.2 cubes for HX2s? Do yourself a favor and get different subs, or rethink your plans. Rockfords sound like *** in any sealed box, but especially one that small.

I've fooled with a lot of the Rockford subs, and the only time I ever got the HX2s to sound good was in a ported box with around 2 cubes per sub.
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Old Jul 15, 2004 | 07:52 AM
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From: North --RI
Car: 92 caddy PIMP
Engine: 4.8
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Is that a photoshop. Sorry I just had to say that. Keep us informed on your progress on your car. Id like to see some current progress pics and what your actually deciding to do. You still thinking about the 4th gen rear end? I actually like the black/blue look even though I despise 4th gen camaros.
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Old Jul 15, 2004 | 08:17 AM
  #7  
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Re: Re: building a NEW! box

Originally posted by Jim85IROC
.2 cubes for HX2s? Do yourself a favor and get different subs, or rethink your plans. Rockfords sound like *** in any sealed box, but especially one that small.

I've fooled with a lot of the Rockford subs, and the only time I ever got the HX2s to sound good was in a ported box with around 2 cubes per sub.
jim, that is just not true, i dont belive you, becuz iv used hx2's before and i was vary happy with them, im just down sizeing from my old system, as show here...
Attached Thumbnails building a NEW! box-2.jpg  
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Old Jul 15, 2004 | 08:20 AM
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Originally posted by ddn69
Is that a photoshop. Sorry I just had to say that. Keep us informed on your progress on your car. Id like to see some current progress pics and what your actually deciding to do. You still thinking about the 4th gen rear end? I actually like the black/blue look even though I despise 4th gen camaros.
AIM me, sometime all show you, but im not ready to show every one else, im alomost done... and vary happy with the way it came out so far...


ok, what if i came 2 more inch's up from the well like in the frist pic,
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Old Jul 15, 2004 | 10:05 AM
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: Re: Re: building a NEW! box

Originally posted by NEEDforSPEED
jim, that is just not true, i dont belive you, becuz iv used hx2's before and i was vary happy with them, im just down sizeing from my old system, as show here...
I decided to do a little box modeling for the 10" HX2. .5 cubes will give a -3dB of 51hz, which is a relatively good match to the car's cabin gain. .75 actually has a slightly higher -3dB point, but rolls off at a slower rate. .2 cubes creates a bump at 100hz and causes a very steep rolloff below 60hz.

In 1 cubic foot ported, it's flat down to 28hz, although when combined with the car's cabin gain, will result in a LOT of low frequency energy

I guess I've always liked ported better with these subs because they sound so bad, that at least in a ported box they get real loud. These definately don't represent the finest in sound quality.

Last edited by Jim85IROC; Jul 15, 2004 at 10:26 AM.
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Old Jul 15, 2004 | 12:57 PM
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i like them sealed i get more tons, you know Jim, i have not tryed ported, only once, not with these subs but others, i hate ported and bandpass, i still think that these are good subs, iv back them up with infinity amp's,

"These definitely don't represent the finest in sound quality"
you might be right there, but there pretty nasty, when there at there full output...


im thinking of my idea still only going up 2 to 3 more inchs higher then my org plan...
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Old Jul 15, 2004 | 01:27 PM
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
They definately are nasty. That's why I like them ported. Since they aren't a sound-quality type of sub, I figure that I might as well get them to hit as hard as possible.

I built a ported box for a guy's 91 camaro to hold a pair of HX2s. Unlike most of the boxes I build, he came to pick it up, so I was able to install it for him and get to listen to it. I could not believe how ridiculously loud that car got. It pounded so hard it hurt. It was definately louder than my system, which was measured at 141.1. If I had to guess, I'd say this was in the range of 145.

If you ever get the chance, I would definately encourage you to at least try a ported box and see what you think. 1 cubic foot, tuned to 30hz.
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Old Jul 15, 2004 | 05:02 PM
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From: you aint stealing my car..
Car: 1984 Z28
Engine: 5.7
Transmission: Auto w/ shift kit
my box is down in that area flat with the little lip and the box is 1.27 cubic feet i needed 1.25 but it was customs so i think i came up damn close it has 1 infinity if u get that lid like in the picture no one will ever know you got a sub if you do your wireing good and dont crank it up

so to answer

little over 1.25 cubic feet in there with the thick board and custom cuts id think it would be hard to get more than that inside since you have to cut angled peices and all
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Old Jul 16, 2004 | 08:04 PM
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From: you aint stealing my car..
Car: 1984 Z28
Engine: 5.7
Transmission: Auto w/ shift kit
heres some pics taken with webcam while it was out of my car because i was krylon fusion'n my gray interior black!

webcam was 20 bucks so pics aint the greatest
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Old Jul 16, 2004 | 08:05 PM
  #14  
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From: you aint stealing my car..
Car: 1984 Z28
Engine: 5.7
Transmission: Auto w/ shift kit
forgot pics
Attached Thumbnails building a NEW! box-box1.jpg  
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Old Jul 16, 2004 | 08:06 PM
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From: you aint stealing my car..
Car: 1984 Z28
Engine: 5.7
Transmission: Auto w/ shift kit
im not sure how tight 2 12's will be this is with 1 12 get them put them next to each other in the well see how it works
Attached Thumbnails building a NEW! box-box2.jpg  
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Old Jul 16, 2004 | 09:08 PM
  #16  
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well, by doing a smaller box i have gaind over 100 CI, pre sub
withch is more then a SF of air space pre sub....
becuz before it was split into 3...
Attached Thumbnails building a NEW! box-1box.jpg  
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Old Jul 16, 2004 | 09:12 PM
  #17  
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all be useing this, inside an out
Attached Thumbnails building a NEW! box-1box2.jpg  
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Old Jul 17, 2004 | 07:49 PM
  #18  
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From: Minneapolis, MN
Car: 1989 Camaro RS
Engine: ZZ4 350
Transmission: T-5
Axle/Gears: BW 9-bolt w/3.73
Originally posted by Jim85IROC
It pounded so hard it hurt. It was definately louder than my system, which was measured at 141.1. If I had to guess, I'd say this was in the range of 145.
Doesn't the human heartbeat get disrupted at around 130??!
I'm getting old!!
How do you like Kicker VR subs?
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Old Jul 18, 2004 | 01:17 AM
  #19  
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what if i did this?
id like to do this if this is possabil ?
Attached Thumbnails building a NEW! box-subboxer.jpg  
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Old Jul 18, 2004 | 10:24 AM
  #20  
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From: you aint stealing my car..
Car: 1984 Z28
Engine: 5.7
Transmission: Auto w/ shift kit
im not 100% sure i fully understand your design but i think i do and it should give it more air and alow it to sound better it will be eaier to do but if i was to do it id invest in one of the hatch lids..
Attached Thumbnails building a NEW! box-6-12-2004001.jpg  
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Old Jul 19, 2004 | 02:13 AM
  #21  
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Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
hey need for speed, where the heck do you put your roof panels with that old setup?

also... if anyone is actually designing a new box design... I'd like to offer this idea... I had a truck box that fit a silverado 1500 single cab... about 1.5 feet wide, and 8 inches at the bottom... the bottom fit perfectly in the well...

I tried many experiments getting the most bass out of this box... I tried the following...

1) on the back shelf pointing up at the hatch... not much bass
2) in the well pointing forward... little bit more bass...
3) in the well pointing away from driver... INSANE bass... still feels like more than my friggin 15's... I miss that sub...

I'd think you'd be better off making both subs fire out the back, and leave an area along the back of the box for air to come out, so they aren't being suffocated....

bass waves like to bounce around and putting the speaker rear-facing gives you the biggest sound wave... putting the box so the speaker is facing up or down can sound nicer outside the car sometimes, but I know for a fact you lose a lot of in-car precious bass... pointing the speakers down, the sound wave is going to bounce around a bit, then basically go back up straight, and you aren't sitting there... so if its bouncing off the back of the car, eventually a deep bass sound wave will make its way to your ears.

-Steve
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Old Jul 19, 2004 | 11:16 PM
  #22  
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i didnt really get what you meant,
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Old Jul 19, 2004 | 11:51 PM
  #23  
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From: Runnin' from the Reaper
Car: 91 B4C/91 RS 305
Engine: L98 and L03
Transmission: 2xTH700R4
Axle/Gears: 3.23 LSD/2.73 Open
He saying that you get the best sound when firing the subs into the rear of the car, the only downside is since you're hitting the body of the car you can get more rattles.
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Old Jul 20, 2004 | 03:05 AM
  #24  
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From: silverton/salem, oregon
Car: 87 Trans am
Engine: 350 TPI
Transmission: built 700R4
Axle/Gears: BW 9 bolt posi w/ disc
i want to put my subs in the well, but im thinking of using that storage lid as a template and face the subs 2 different ways, just so it isnt normal. my only thing is, i dont want to put the amp on the rear deck, would it be okay under the subs in the well?
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Old Jul 20, 2004 | 06:24 PM
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Originally posted by darkhorse91
He saying that you get the best sound when firing the subs into the rear of the car, the only downside is since you're hitting the body of the car you can get more rattles.
even if i fill it with the sound fibbers i posted a pic of?

Originally posted by Red87SC
i want to put my subs in the well, but im thinking of using that storage lid as a template and face the subs 2 different ways, just so it isnt normal. my only thing is, i dont want to put the amp on the rear deck, would it be okay under the subs in the well?
have the amp in the well, and a storage type lid with subs... i had something like that 5 years ago
... it should be fine, if thats what you wher looking for....

Last edited by NEEDforSPEED; Jul 20, 2004 at 06:27 PM.
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Old Jul 21, 2004 | 04:22 AM
  #26  
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Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
I'm sorry I didn't clarify... it's from this post...

"jim, that is just not true, i dont belive you, becuz iv used hx2's before and i was vary happy with them, im just down sizeing from my old system, as show here...

NEEDforSPEED has attached this image:"

it looks like you have t-tops and I was just wondering where you put them, that's all..
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Old Jul 21, 2004 | 11:05 AM
  #27  
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Originally posted by ScrapMaker
I'm sorry I didn't clarify... it's from this post...

"jim, that is just not true, i dont belive you, becuz iv used hx2's before and i was vary happy with them, im just down sizeing from my old system, as show here...

NEEDforSPEED has attached this image:"

it looks like you have t-tops and I was just wondering where you put them, that's all..
i really never took them off, and when i did i left them at home, or put them in the back seats ...

and thats kinda why im doing a newer system
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Old Jul 22, 2004 | 01:40 AM
  #28  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
ah that's cool... If I ever made myself another box, I think I would specifically design it with hooks for the t-tops to strap down to... I've noticed that the subs don't really sound too bad with the t-tops blocking the bass... it's not directional enough.
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