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Is this a good sub box design?

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Old 05-15-2005, 03:30 PM
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Is this a good sub box design?

http://cgi.ebay.com/ws/eBayISAPI.dll...773975991&rd=1

Is that a good one for a pair of Audiobahns, or do I need a sealed box? I know nothing about porting lol
Old 05-15-2005, 07:48 PM
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yea its an alright box but you have to match the specs such as ported box volume of the sub to the actual volume of the box.
Old 05-16-2005, 10:14 AM
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without knowing what frequency it's tuned for, it's impossible to know how well it'll work with your subs.

Plus, there's no way that's going to fit right in a thirdgen.
Old 05-16-2005, 05:25 PM
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plus for audio bahns each chamber is very small
Old 05-17-2005, 11:20 AM
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I don't think that box would fit in your back seat.
Old 05-17-2005, 11:35 AM
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Car: 83 bird
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ya... I know. But, just looking for friendly advice!

AW-1251Q is the model.
Sensitivity: 92.1 dB
Min Frequency Response: 24 Hz
Max Frequency Response: 1000 Hz
Size: 12 in
Depth: 5.25 in

Audiobahn recommends a ported box, with the following specs:
Air space 2.5^3
Port size (1)4x6.9
Port Vel. 7.64%
-3db 33.5Hz
Tune freq. 37Hz
Sub disp. .15
Port disp. .044
Total vol. 2.7^3

Ok, so I need a box with two 2.7cf enclosures??
Old 05-17-2005, 01:01 PM
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Going off of their specs you need a box that holds 5.4 cu ft (2.7 for each sub) but imo the ports are very small and tuned to high
Old 05-17-2005, 02:36 PM
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Hope you have some tricks you can pull to put a 5.4cf box in a thirdgen.
I think 37 Hz is tuned too high as well, but maybe Audiobahn knows something we don't if they're suggesting that tuning frequency. It's your call.
Old 05-17-2005, 03:06 PM
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Dear gawd, so I really do need a 5.4cf box!? Time for different subs
Old 05-17-2005, 03:19 PM
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You could put them in a sealed enclosure - it would be significantly smaller.
Old 05-17-2005, 03:30 PM
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Car: 83 bird
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Axle/Gears: 3:42
Ok, but Audiobahns suggests only ported for them, how could I find sealed box specs?
Old 05-17-2005, 05:42 PM
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ok a lil help from me. i have two 12" audiobahn flame excursion series subs in a pro box. itsa custom built for our car and it helps the perfromance of the subs. check em out. www.proboxrocks.com
Old 05-17-2005, 07:39 PM
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Originally posted by aaron7
Ok, but Audiobahns suggests only ported for them, how could I find sealed box specs?
Use the T-S parameters in a program like WinISD. If you don't get a reasonable frequency response in a reasonably sized box, then maybe they do need to be ported. Audiobahns sound like crap to me even when they are done "properly."
It's crazy to buy a ported box for a sub that is not tuned specifically for that particular sub. It's easier to buy pre-made sealed boxes because all you need to worry about is the volume of the box.
Old 05-17-2005, 09:15 PM
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Car: 83 bird
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Anyone on here have that program, and want to let me know what I need?? ;P
Old 05-17-2005, 10:56 PM
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You can download it here:
http://www.linearteam.dk/default.aspx?pageid=winisd

Anything else just leave a message
Old 05-17-2005, 11:01 PM
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Sure, how the heck do I use this program!
Old 05-18-2005, 07:36 PM
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Once you open the program, go to the "help" menu and click on "how to begin." It has a pretty nice tutorial. You should probably do some reading about Thiele-Small parameters online if you don't really understand them. This website is pretty helpful for that:
http://www.carstereo.com/help/Articles.cfm?id=29
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