$300 budget for Driver and Amp. Need suggestions! - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 44 Old 08-19-09, 12:16 PM Thread Starter
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Re: Blue prints of first sealed sub... need input!

Would porting this sub be a good idea? And tune it to around 18-19hz?? Thanks

Last edited by Shicks18; 08-19-09 at 12:23 PM.
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post #22 of 44 Old 08-19-09, 01:11 PM
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Re: $300 budget for Driver and Amp. Need suggestions!

The sub would benefit from a bigger box if going ported.




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post #23 of 44 Old 08-19-09, 01:14 PM Thread Starter
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Re: $300 budget for Driver and Amp. Need suggestions!

What would be good dimensions for a ported box?
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post #24 of 44 Old 08-19-09, 01:24 PM
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Re: $300 budget for Driver and Amp. Need suggestions!

9 cu.ft. tuned to 18 hz would give excellent low end extension.




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post #25 of 44 Old 08-19-09, 01:30 PM Thread Starter
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Re: $300 budget for Driver and Amp. Need suggestions!

Sweet. And just 1 long port would do the trick?

24x38x22

.75in material thickness
800 in ^3 bracing
290 in ^3 port volume (5" diameter x 14.78" length)
.25 driver volume
1
driver

net cubic feet = 8.862

Those dimensions seem okay?
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post #26 of 44 Old 08-19-09, 02:15 PM
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Re: $300 budget for Driver and Amp. Need suggestions!

What would you use for a 5" diameter port?

The modeling shows a 7 db advantage at 20 hz with the ported box. That's a big gain in the low end compared to the sealed using the same Bash 300 amp.

0 budget for Driver and Amp. Need suggestions!-hf.jpg




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post #27 of 44 Old 08-19-09, 04:51 PM Thread Starter
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Re: $300 budget for Driver and Amp. Need suggestions!

Ok looks like I need 6" diameter pvp pipe.

New calculations:

24 x 39 x 22
6" diameter pvp pipe x 22" long
.25 cu ft. driver
800 in^3 bracing
626 in^3 port volume

8.935 Net cubic feet.

How does all that look??

Last edited by Shicks18; 08-19-09 at 05:05 PM.
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post #28 of 44 Old 08-19-09, 05:26 PM
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Re: $300 budget for Driver and Amp. Need suggestions!

You got it!




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post #29 of 44 Old 08-19-09, 05:39 PM Thread Starter
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Re: $300 budget for Driver and Amp. Need suggestions!

SWEEEET! Im working up a sketch now will post when im done.

Looks like I will have the port coming through the very top of the cabinet. The driver will be front firing, towards the bottom of the cabinet, and the plate amp on the rear side.

That all sound okay?
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post #30 of 44 Old 08-19-09, 06:46 PM
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Re: $300 budget for Driver and Amp. Need suggestions!

Shouldn't be a problem as long as nothing gets dropped in the port.




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