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| Date: |
March 18, 2007 at 09:10:02 |
| From: |
H_McClary, [nc4.akl.callplus.net.nz] |
| Subject: |
horn help |
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Yeah I know its not a real sub and it'll only play to 50-60 but I'd apreciate a bit of help with a few questions.
Just want a bit of help understanding horn parameters and how they interact. In particular with reguards to scaling up.
And a few other odds and ends.
Yeah a lot of specific questions on a totally theoretical situation but realy just trying to get a grasp of how it all relates.
This is the design I'm taking about
If you take a look here - The classic 15" scoopy
http://www.dancetech.com/aa_dt_new/pa/plans/15-bass-scoop-print.gif
First: If you look at the first bend up from the throat it appears as tho the path turns 180 deg around a corner with a measurement 6" in from top and back to establish the corner position.
But if you claculate cabinet depth (front to back) the corner flares out to about 7.3" before the bend and then 6" as the line starts down towards the mouth.
Wouldn't it be better to maintain a linear expansion in the path rather than squeezing up and down?
Second: When scaling a horn up from 15" to 18" the factor is X 1.2
Dose this apply to all parameters equally? Chamber Volume, mouth area, throat area, and line length?
No need to post how bad 18"s are 'get a 9515 and you'll never look back' etc. Just trying to understand scaling and horns a bit better.
Third: What do think the effect would be increasing line and mouth, while keeping throat area and chamber volume the same.
fourth: What effect dose increasing only chamber volume have?
Thanks for any help you can offer
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Posted with TalkShop version
2.76 BETA |
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