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Old 03-20-2011, 01:44 PM
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Question 4th order 04 impala

OK guy's i need some help here i have a 4th order for four TREO TSX 12's that i literally just got done building like 30 minutes ago. and i DO NOT like the way it performs it is no where near as loud as i want it to be. the measurements are 36w x 14.5h x 30d there are 2 sealed chambers that are 1.5 cf each and the ported chamber is 4 cf with 70 sq inches of port area and it is tuned to 52 hz. IDK how to fix it or what to do to make it louder help please and thanks. I'm open to all suggestions and input
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Old 03-20-2011, 01:54 PM
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Pics? Curious.
Who designed it? 4ths arent always as loud as ported.. often they arent depending on the passband.
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Old 03-20-2011, 02:02 PM
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I was told that for 12s it was better to do .75-1 cube sealed each. whether or not half a cube each would make it sound not as loud, I couldn't tell you.
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Old 03-20-2011, 02:25 PM
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Nice to see another 04 Impala in the game..I got an 04 SS..Were you able to slide the box in and out with the 30" depth? Im goin for a bigger box for my 15's and I didnt know how deep I would be able to go for me to be able to put it in and take it back out

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Old 03-20-2011, 06:21 PM
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Quote:
Originally Posted by surreal View Post
Pics? Curious.
Who designed it? 4ths arent always as loud as ported.. often they arent depending on the passband.
This. You can make 4th order BP's louder but it'll definitely be peakier and have a narrower passband.
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Old 03-20-2011, 10:52 PM
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21 is the max depth for an o04 . For the record... And increase height to 16 for more cuft
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Old 03-23-2011, 06:59 PM
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Quote:
Originally Posted by 3rdshiftdiscretion View Post
21 is the max depth for an o04 . For the record... And increase height to 16 for more cuft
Actually no 21 is not the max depth. i have the 04 buddy. and i had a box that was 8.1 cubes and 37w x 14h x 34d. so no its not the max... for the record. and i have no pics of the box but i got the problem with it fixed
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Old 03-23-2011, 07:04 PM
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Quote:
Originally Posted by joey2010 View Post
OK guy's i need some help here i have a 4th order for four TREO TSX 12's that i literally just got done building like 30 minutes ago. and i DO NOT like the way it performs it is no where near as loud as i want it to be. the measurements are 36w x 14.5h x 30d there are 2 sealed chambers that are 1.5 cf each and the ported chamber is 4 cf with 70 sq inches of port area and it is tuned to 52 hz. IDK how to fix it or what to do to make it louder help please and thanks. I'm open to all suggestions and input

Contact 80inches he is the 4th order king good luck
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Old 03-23-2011, 08:04 PM
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prob seen mine but here is a link and info

CLNFREAK'S build... rebuild.... build...

i would get the tuning lower... mine is 44-45... and gets good and loud off 1500 watts and 2 12"
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Old 03-23-2011, 08:14 PM
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i would try 1cu sealed each sub and around 4-8cu ported...i would say invert your subs to get closer to 2 cu sealed per section you have but then your ported section would go down in volume you could always try inverting them for shits and giggles and see how it sounds
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