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Mid Bass Horn Plan
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knet94 View Drop Down
Old Croc
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Joined: 31 March 2008
Location: NW London
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Points: 1538 		Post Options Post Options   Thanks (0) Thanks(0)   Quote knet94 Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2015 at 12:31pm
Originally posted by Motion54 Motion54 wrote:

Originally posted by jbl_man jbl_man wrote:

An old 4560 (plenty of plans for them online) can be used as a mid horn,but as Tony says,the problem is finding a modern 15" driver that will work as a mid.....

http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=58711&d=1366219662


What freq range does this classic design cover comfortably?
Is it mid to long throw?


PD153ER excellent mid in a reflex. Not sure how they would fare in a horn tho.
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_djk_ View Drop Down
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Joined: 23 November 2004
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Points: 5992 		Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2015 at 9:01am
The 4560 type boxes (including the Altec varients) are horn-loaded above about 160hz, to about a half-octave above the driver's mass corner (800hz max).
 
"200Hz means strait horn. Not a folded one"
 
A bifurcated horn with only one gentle bend should be fine.
 
How low do you think this huge dual 15 straight horn will go?
 
.
 If you expect to use it down to 60hz it will need to be even larger.
 
 
djk
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