file HD15 Trap?

6 years 5 months ago #20251 by Reality Sound
HD15 Trap? was created by Reality Sound
Anyone manage to get a kick into a trapezoid yet? Playing around the HD15, trying to get it into a trap shape to go with the mt121. Played around with some math and drawings.....
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You can see the 'horn line' in the mouth. Still playing around trying to get the opening done with the same areas/volume etc.

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6 years 5 months ago #20252 by Reality Sound
Replied by Reality Sound on topic HD15 Trap?
this should seem more clear-
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6 years 5 months ago #20253 by bgrade
Replied by bgrade on topic HD15 Trap?
Should work out without too much trouble, as the expansion of the trapezioid is in the same direction as the horn expansion from throat to mouth. Bit more of a pain in the a$s to build though. Is this to match up with trap mid tops or to spread the dispersion more evenly?

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6 years 5 months ago #20254 by Reality Sound
Replied by Reality Sound on topic HD15 Trap?
trying to get an 'all in one cab' hd 15/ MT121- 15/12/2. Playing around horizontal mouth now, similar to the turbos..

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6 years 5 months ago #20255 by Reality Sound
Replied by Reality Sound on topic HD15 Trap?
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this is with a horizontal mouth.....

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6 years 4 months ago #20257 by bgrade
Replied by bgrade on topic HD15 Trap?
Almost looks like you could load the driver either direction on the baffle on that last one. If you made it a rear loaded kick, it would reduce the front chamber, increasing the sealed chamber and might play a little wider range both up and down while still having pretty much the same length of horn.

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6 years 4 months ago #20258 by Reality Sound
Replied by Reality Sound on topic HD15 Trap?
That's a thought! ;)

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6 years 4 months ago - 6 years 4 months ago #20266 by Dref
Replied by Dref on topic HD15 Trap?
Make a trapezoid version of my Omega Horn, and you will have a Funktion One RS2 lookalike. ;)
I did some designs on paper but scrapped the idea because I didn't have much use for a trapezoid version.

I would suggest designing a new BPH instead of trying to get the HD15 in to a trapezoid enclosure.
Also consider a trapezoid W-bin maybe? There have some discussions on trapezoid kick bins on speakerplans before.

Mykey's C-4T is a nice example of the "horizontal expanding" arrangement.


What are you planing on using them on top of?

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6 years 4 months ago #20269 by Reality Sound
Replied by Reality Sound on topic HD15 Trap?
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It started as a hd15 trap, but is slowly changing form......They will go on top of my BT7's when I get them all up and running.

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6 years 4 months ago #20270 by Reality Sound
Replied by Reality Sound on topic HD15 Trap?
let's see your omega horn......

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