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Multi-Way Conventional loudspeakers with crossovers

a nice K-tube tweeter
a nice K-tube tweeter
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Old 28th November 2015, 07:09 AM   #61
freddi is offline freddi  United States
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a nice K-tube tweeter
maybe Ann Karlson ? (JEK's widow)
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Old 11th December 2015, 09:28 PM   #62
tb46 is offline tb46  United States
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Hi Y'all,

I hope the bomber didn't terminate this thread. :-)

The picture in Post #54 looks like the nozzles John Karlson is holding are reducing in size towards the open end. Would that make a big difference?

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Old 16th December 2015, 08:42 PM   #63
Bill F. is offline Bill F.  United States
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I'm still hoping to finish the Karlson tube project I dreamed up a couple years ago (link).

I got as far as roughing out a couple tubes, and then life got in the way. I still have a bunch of promising drivers to try out. Shouldn't be too hard to put together a multi-amped test bed with my Rane RPM88.
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Old 17th December 2015, 01:20 AM   #64
tb46 is offline tb46  United States
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Hi Bill F.

Post #63: "...multi-amped test bed with my Rane RPM88..."

Good thinking, I forgot all about the Rane MA 3s I've had on the shelf for years now. That'll help. :-)

I've been messin' w/ some cheap GRS PZ1188, just trying to find a little time, and get a few things set up to listen to. Don't have anything set up to measure w/, so largely a waste of time, but putting the large 2"I.D. cardboard K-tube over the 1"I.D. fiberglass K-tube softened the response, nearly sounds promising. I used about 1.5" of acoustic foam at the base of the K-tubes to hold and center the big tube over the little one.

Regards,
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Old 4th January 2016, 12:47 PM   #65
kees52 is offline kees52  Netherlands
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Have al a happy newyear.

Somebody on trynergy threat did advise me to use a K-Pipe tweeter like this for injecting hf from 2 a 4 khz into the horn throat close to the 2 inch wideband driver.

For this I need a small pipe, on a 1 inch tweeter, I do not now what happens but maybe it is interesting.

I need to bend the pipe slightly.

Now I did put a tweeter in mouth for testing. I do like the pipe approach.

regards
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Old 12th July 2019, 08:04 PM   #66
Retsel is offline Retsel  United States
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Default Add in a diffuser

I know that this thread is old...

Like any speaker which beams, a diffuser could be added to the tube to help distribute the high frequencies which tend to beam. I think that the Karlson patent shows this.

Retsel
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