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Old 6th August 2010, 04:28 AM   #31
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Originally Posted by freddi View Post
figures I'd come up with a loser - smaller can be better if spl can be met - which thread has your 4.3CF tapped horn?
See here - Finally taking the plunge (Dayton PA310-8 TH) - needs to be updated (will do sometime this weekend).

Also New Dayton Pro !! - Techtalk at Parts-Express.com, where I've posted some initial results.
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Old 7th August 2010, 07:06 AM   #32
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has there been any progress with new designs so far?
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Old 7th August 2010, 02:21 PM   #33
jbell is offline jbell  United States
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I think I got it....

Don would you run your cad on this... I think its a winner. And this one is definitely solid to 40hz, AND a better shape than a cube.

The scraps at the end are for braces/angles as I need them. Won't know exactly till it's built.

Last edited by jbell; 7th August 2010 at 02:49 PM.
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Old 7th August 2010, 02:55 PM   #34
jbell is offline jbell  United States
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This should have the 'big box sound' in a 50lb package, instead of a 150lb package. It's giving up a couple db in sensitivity to the big box, and it's giving up about 100 watt power capacity to stay under xmax to the cube. (bigbox is good to 50v, this 56v, cube 63v).

I'd like to move the upper part up an inch, so the flare would start about 4" tall, and end at 10.5" tall. It'd have a better response, but I haven't figured out how to get the back part of the cabinet right, so the flare is continually expanding.
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Last edited by jbell; 7th August 2010 at 03:03 PM.
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Old 7th August 2010, 03:08 PM   #35
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Originally Posted by jbell View Post
This should have the 'big box sound' in a 50lb package, instead of a 150lb package. It's giving up a couple db in sensitivity to the big box, and it's giving up about 100 watt power capacity to stay under xmax to the cube. (bigbox is good to 50v, this 56v, cube 63v).

I'd like to move the upper part up an inch, so the flare would start about 4" tall, and end at 10.5" tall. It'd have a better response, but I haven't figured out how to get the back part of the cabinet right, so the flare is continually expanding.
It's a bass bin, so you don't have to have a continuously expanding flare. You can "step" the sections. I built a TH with the stepped cross-section below just recently, and the measured response within its passband seems a pretty decent match for the HornResp predictions. It also allows me to top-mount the speaker (I've left the top panel removable).
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Old 7th August 2010, 04:05 PM   #36
jbell is offline jbell  United States
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yea, the hard part was figuring out the overall dimension and cut sheet -- once that is done, all kinds of options open up.

Here's another thought I'm running with. More top end (like oliver's posting awhile back) and still reasonable 40hz...
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Old 7th August 2010, 04:17 PM   #37
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I recognize that folding type, I'we done something simillar in this design suitable for the 15TBX100 or eighteensound 15LW1401 :Click the image to open in full size.
I wonder if design is possible to complete from a single sheet, I'll do the math and get back to you, it does seem small enough, if it does meet the challenge criteria this would be my entry.
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Old 7th August 2010, 04:52 PM   #38
jbell is offline jbell  United States
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I'm figuring around with the above drawing to approximate this....
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Old 7th August 2010, 07:19 PM   #39
jbell is offline jbell  United States
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what do you think don?
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Old 7th August 2010, 07:53 PM   #40
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You guys are cranking them out faster than I can keep up.

Jim - which one would you like first? I'll have it early monday. It really helps to have the HornRes input screen, 'cause I can see what
you were thinking!
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Last edited by Don Snyder; 7th August 2010 at 07:57 PM.
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