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Old 09-26-2010, 12:00 AM
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Default need help designing this box

like the title states - I need some help / recomendations from you guys if you dont mind.

viechle is 1990 chevy 2500 single cab.
pair of 10" subwoofers - vintage jbl gto - hopefully some one can help with the specs on them in this thread http://www.caraudioclassifieds.org/f...361#post824361

right now the truck has one of the 10s in a sealed down fire box that is .67 cubes before disp. its probly on the small side for this sub
id like to do a ported box now for the pair of them between my bucket seats. max dimensions are listed in the pix : but idealy I would have the box be about 14" tall total with 15" being max height - and 12" wide total. leingth is ajustable but id like to not go longer than 29"
idealy the box will be downfire design again - as id like to keep it "low key" in my truck and not show off my subs to potential theifs. and I also like the fact that nothing can poke the subs if they are face down - its safer in a truck



I would guess that tuning this box low like the 32 or 33 hz range would be ideal for theese subs as the suspension seems soft - wich in theory would reduce powerhandling alot below tuning frequency - and I like to listen to alot of bass musics like dj billy e and bass mekanik type recordings along with dub step remix songs and old school raps.. ext.

the truck is for sound quality - and daily driving enjoyment.
right now the single 10" is some what satisfying - but id like to give the pair a try.

amp power will be from an old school rockford fosgate punch 200a1 mono full range amp - running at 2 ohms should give 250w eazy to the pair
so thats still relatively low power to the subs id guess they might take 300w each in the absolute optimal enclosure for them ?

please give me your imputs for the box - or if some one wants to design a box for me - I can toss out 5$ in paypal is all I got to spare - ive built boxes before - and figured tuning and what not - but it seems harder this time because i dont know what #s the subs want idealy
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Old 09-26-2010, 12:01 AM
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Subs forward on the driver's side, port to the passenger side. Box as big as you can make it. Tune in the mid-30's.
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Old 09-26-2010, 12:24 AM
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there is exactly 12.25" between my bucket seats in the truck.

im not realley getting what you are saying - subs to the driver side ?

I wish to make the subs fire down at the cab floor - and have the port face up twards the roof all the way back against the cab wall

subs are 6.2" mounting depth also
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Old 09-26-2010, 12:32 AM
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Quote:
Originally Posted by brian84corvette View Post
there is exactly 12.25" between my bucket seats in the truck.

im not realley getting what you are saying - subs to the driver side ?

I wish to make the subs fire down at the cab floor - and have the port face up twards the roof all the way back against the cab wall

subs are 6.2" mounting depth also
Oh, I see... you want to make a console box. My bad. Disregard my previous post.

Subs downward is the best way to do that, but port to the rear or downward with the subs if you can. Personally, I would rather have a single kick ass 10 rear firing than a pair firing downward, but that's up to you and I have no evidence that rearward is better, so whatev.
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Old 09-26-2010, 12:37 AM
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I suggest using two 3" round ports without aero flanges instead of the rectangle port since the rectangle port would need to be huge and would take up valuable air space.
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Old 09-26-2010, 01:16 AM
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pair of 3" round ports I can do - any idea of a rough leingth they would need to be to achieve low tuning?

im guessing the box will be / should be about 2.5 cubic foot total then take away for sub disp. and port disp.
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Old 09-26-2010, 01:17 AM
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Old 09-26-2010, 01:27 AM
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you will get a lot more bass out of one in that enclosure than you will with two.
{this means.. given the same total power.. below 60hz... 2 at 600w each or 1 at 1200w... the 1 at 1200w wins}

2 to 2.5 cu ft is just too small for two
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Old 09-26-2010, 01:50 AM
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I can try to maxamize box space to come up with more cubic ft = but dont want to build the box too large - ive tried theese subs in a too large enclosure before and they sounded like hell. is why I wanted to find the specs on them in my other post to see what manuf. recomends
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