Does my basshorn look ok?

bigmike216 · 19th August 2004, 07:41 AM

Does this look alright? Nothing horribly wrong here?

Will be run from 40Hz to 120 Hz.

CAD Drawing (haven't put the divider in, as I want to be able to paly with the back chamber volume.)

And, The pointless 3d Model,

with my mid/top box ontop.

BillFitzmaurice · 19th August 2004, 03:04 PM

Two points. First, you're modeling in .5 (eighth) space; the response will only be valid if you have your horn firing into a room corner. If you plan on using it as drawn you need to model in half space.

You're also going to some lengths to round off your reflectors. You only need to do that for frequencies above 200 Hz or so; it isn't necessary for lower frequencies.

When you model in half space you'll find your pathway will have to be much longer to get to 40 Hz, far longer than your folding scheme allows.

www.billfitzmaurice.com

Coolin · 19th August 2004, 05:39 PM

It wont make much of a difference for bass but i would try to load the driver more symetricaly.

What drivers are you using on top?

19th August 2004, 07:41 AM	#1
bigmike216 diyAudio Member Join Date: Jul 2004 Location: BC, Canada	Does my basshorn look ok? Does this look alright? Nothing horribly wrong here? Will be run from 40Hz to 120 Hz. CAD Drawing (haven't put the divider in, as I want to be able to paly with the back chamber volume.) And, The pointless 3d Model, with my mid/top box ontop.

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19th August 2004, 03:04 PM	#2
BillFitzmaurice Banned Join Date: May 2004 Location: New Hampshire	Two points. First, you're modeling in .5 (eighth) space; the response will only be valid if you have your horn firing into a room corner. If you plan on using it as drawn you need to model in half space. You're also going to some lengths to round off your reflectors. You only need to do that for frequencies above 200 Hz or so; it isn't necessary for lower frequencies. When you model in half space you'll find your pathway will have to be much longer to get to 40 Hz, far longer than your folding scheme allows. www.billfitzmaurice.com

19th August 2004, 05:39 PM	#3
Coolin diyAudio Member Join Date: Apr 2003 Location: Holland	It wont make much of a difference for bass but i would try to load the driver more symetricaly. What drivers are you using on top?

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