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Old 20th March 2007, 01:23 PM   #1
hm is offline hm  Europe
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Default horn for two 3" driver

Hello,

the listeners feedback is a cause to
make the plan for free download:

Trombone

best soundstage, cheap, small, enough SPL.

http://www.hm-moreart.de/24.htm
http://www.hm-moreart.de/88.htm
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File Type: jpg trombone 1.jpg (31.6 KB, 332 views)
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Old 20th March 2007, 02:02 PM   #2
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Definitely a design I'm curious to hear. Thanks!
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Old 20th March 2007, 02:07 PM   #3
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Yes...sounds very interesting...but it's a very complicated design and I ask myself....why?
Wouldn't it be more satisfying to take a 5" or 6" driver with a less comlicated enclosure?
But it's interesting...without a doubt!
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Old 20th March 2007, 02:36 PM   #4
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Default larkinrulez

look the Posaune
http://www.hm-moreart.de/25.htm
for 6,5 driver or Manger,

http://www.hm-moreart.de/25.htm

and the last plan page you find
a Posaune for 4" driver.

I built it after the Saxophon to hear what is
possible, the Trombone ist the smallest
fullrange horn with the cheapest price
and best soundstage I ever built.

2 x 4" page
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Old 20th March 2007, 10:12 PM   #5
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Is Trombone bipolar or dipolar? I was always fascinated by Manger Diskus.
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Old 20th March 2007, 10:51 PM   #6
hm is offline hm  Europe
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Bi-pol,

when you use the back driver invers change the pol.

You might get a better K2 in the bass and less HT effect
over ~1000 Hz (the end of the speaker invers) because
it stands near a wall, so HT reflection not wanted.

The distance between the driver is smaller than
between your ears, it is like one driver.
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Old 21st March 2007, 12:17 AM   #7
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Im sorry if this sounds ignorant, but so your basicaly using two speakers on two horns, per ch. One acting as a bass driver, the inverted one, and one acting above that and using the horns natural roll off as an X over?
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Old 21st March 2007, 01:03 AM   #8
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sorry,

there is much to tell, to much for my English.

look the single simulation of the membranmovement,
how looks the complet system movement?
I think the movement turn to an average, if so
its a kind of revolution, because everything gets better
by lower movement. and what happens at 40 Hz
the back driver moves more but it can because it
has a horn optimum, low movement

The single simulation shows nothing below 70 Hz
but you get 38 Hz.

There a some facts, like 4 horn mouth, 90°,
horn mouth distance, impedanz etc.
the alphorn instrument, to much to write.

I asked Mr. Dicks (DDD) and Mr. Keller (AER)
but no explanation is real found.

It happens

look also the Saxophon and Posaune
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Old 21st March 2007, 08:11 PM   #9
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The best bass explanation ist found:

Double horn explanation:

Building of organs

This phenomenon is used for a long time in the building of
organs:

With simultaneous employment of the 8-foot and the 51/3-foot,
which lie a Quinte over it, one hears the 16-foot, thus a Oktave
under the 8-foot. Thus a missing basic clay/tone can be simulated,
in which two clay/tone producers on the Oktave and the pure
Duodezime ring out at the same time to material the missing basic
clay/tone. With the organ will so e.g. 32 ' - registers saved, in which (preferably open) 16 ' - Labialregister with (covered) a 102/3' a Labialregister one combines.
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Old 22nd March 2007, 11:36 AM   #10
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not really, or ??
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