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Old 01-31-2013, 08:24 PM
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Question Drop from 12s to 10s?

So here is my issue, I currently have 2 12s in a ported box 4cuft (after all displacement) tuned at 33Hz with 58 sq in of port area. Sounds good, have not metered the car yet, but I have a feeling it will NOT hit my goal of sounding good and hitting a 145. The car is a 4dr hatchback, 09 honda fit to be exact and I am only using the rear hatch area for subs, amps and batts. So the enclosure is about as big as it can get externally at 19" H x 39.5" W x 16" D. Power for the subs is a Skar SK4500.1.

I was discussing this with an old fellow car audio friend and he suggested going down to 10s from 12s. Now my concerns are pretty simple, cone area since the 12s cone area is 226.19, and 10s would only be 157.08. His point to me was I would have more flexibility with the enclosure with 10s. I guess what I am getting at is has anyone ran into this situation before and did going down a size of sub actually help?

If pictures of my current enclosure help:



And here is the box crammed in the car.

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Old 01-31-2013, 08:26 PM
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Have you ever thought of 1 badass 15? 45's are possible with 1 15.
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Old 01-31-2013, 08:28 PM
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Due to my depth of 16" I ruled out doing a single 15".
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Old 01-31-2013, 08:30 PM
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You should be able to do a 45 with you current gear.
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Old 01-31-2013, 08:33 PM
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Same enclosure on a 2500.1 did a 141 @ 35Hz, so I am not so sure
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Old 01-31-2013, 08:34 PM
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have you thought about ditching that crappy brand? bet you would hit 145s with something esle with 10s
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Old 01-31-2013, 08:37 PM
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not a knock on you or anything, but imo, 2 12's on 4.5k should be putting up 45's. Have you thought of maybe not downsizing, and just building a different box for them? Could just be the enclosure design.
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Old 01-31-2013, 08:38 PM
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Quote:
Originally Posted by assassin1840 View Post
have you thought about ditching that crappy brand? bet you would hit 145s with something esle with 10s
This is not about brands, as I run what I run for my reasons.
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Old 01-31-2013, 08:39 PM
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Quote:
Originally Posted by iKidwell View Post
not a knock on you or anything, but imo, 2 12's on 4.5k should be putting up 45's. Have you thought of maybe not downsizing, and just building a different box for them? Could just be the enclosure design.

This is box #4, just getting a bit discouraged I guess I have another design I am working on with subs up and a really WIDE port facing back but just hate doing all the work on the box for it to fall flat on it's face so to speak :P
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Old 01-31-2013, 08:41 PM
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Quote:
Originally Posted by all4spl View Post
Same enclosure on a 2500.1 did a 141 @ 35Hz, so I am not so sure
You can't just throw shit together and expect big numbers. If you are serious about the 145 buy a meter. If you can't squeeze a 45 out with two 12's and 4500 watts you're doing something wrong.
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