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| Date: |
November 08, 2009 at 02:23:09 |
| From: |
djk, [65-103-48-116.cdrr.qwest.net] |
| Subject: |
Re: sub ports |
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I just ran the numbers on your driver and box.
You could use a 4" x 19" port with an elbow, but you would have to limit the power as it will be noisey (make 'chuffing' sounds).
A port large enough to be quiet will not fit in the box, it would have to be about 33" long.
Either a passive radiator is needed, or just run a sealed box with EQ.
That sized sealed box will be -3dB at 24hz with about 6dB of boost.
A 15" PR with a mass of 600~700 grams would be about right.
http://aespeakers.com/shop/catalog/product_info.php?cPath=24&products_id=41
This would get you flat with no EQ into the 20hz region, lower in room. Will handle 400W and have the woofer be less than x-max, the PR will be moving about 2" peak-to-peak at 20hz or so.
The PR will have about 7dB more maximum output in the 20hz range.
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Posted with TalkShop version
2.77 BETA |
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