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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 13th November 2015, 09:40 PM   #1
freddi is offline freddi  United States
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a nice K-tube tweeter
Default a nice K-tube tweeter

2" format I believe NEWS | Wolf von Langa

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Old 13th November 2015, 10:04 PM   #2
Face is offline Face  United States
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Any polars of such a configuration?
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Old 13th November 2015, 10:26 PM   #3
freddi is offline freddi  United States
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a nice K-tube tweeter
not seen any published - they work quite well(and sound "very good") for 1" compression drivers with Transylvania Power Company's length of 5.3" - if you have a loose compression driver laying around, roll a paper tube about 5.5" long, snip ~ half-ellipse slot with scissors, mount with tape, elevate around 30 degrees (if slot is facing "down") or - 30 degrees if slot facing "up" and give a listen. I would not run a 1"ID K-tube much lower than 1K6 highpass filter

my first tube was paper and maybe 16 years ago - I made pvc tubes, and have the Transylvania product (excellent)
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Old 14th November 2015, 02:46 AM   #4
xrk971 is online now xrk971  United States
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a nice K-tube tweeter
Quote:
Originally Posted by Face View Post
Any polars of such a configuration?
I would take some polar data but too busy with other setups at the moment. My one test of it, I noticed the most important thing was how uniform the sound was walking around it. I would guess is probably +/-3dB over 120 deg.

Here are some freq response measurements by IG81 with same K-tube but different CD's with tube pointing ~20° up, slot down. There was a ~1.5kHz PLLXO:

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from this thread: Karlson's slotted pipe tweeter
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Old 14th November 2015, 03:27 AM   #5
freddi is offline freddi  United States
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a nice K-tube tweeter
that BMS-4550 is nice and strong plus has good HF extension - the cheaper P-Audio BM440 sounds plenty good to me on a K-tube - the very highest Fs can run straight down the tube's long axis

I don't know what format size Faebar uses - 1.4"? 2" ? considering its tilted down and this picture overhead, what proportion
of the tube would you say is slotted? What does the unslotted portion do to the response behavior?

Click the image to open in full size.

Last edited by freddi; 14th November 2015 at 03:31 AM.
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Old 14th November 2015, 03:32 AM   #6
xrk971 is online now xrk971  United States
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a nice K-tube tweeter
More people in Multiways should give this waveguide a try - it really does work - wide wide polar and smooth. Can't be simpler to build compared to other waveguides. Folks just have to get around their own GAF... (guy acceptance factor)
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Old 14th November 2015, 03:36 AM   #7
freddi is offline freddi  United States
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a nice K-tube tweeter
lol - - I've used them since 2000 and would have before if had known about them - Karlson had it in his X15 system probably by 1966 - that's about a half century soon - I have one version of the X15 with 1.875" diameter tube which mounts on the reflector panel - its sounds very "fast" - something like a JBL plate lens only better

here's the super high end speakers with the pipes

Färber Acoustics - Equilibrium Speakers
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Old 14th November 2015, 03:38 AM   #8
xrk971 is online now xrk971  United States
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a nice K-tube tweeter
Those things are eye poking hazards.
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Old 14th November 2015, 03:43 AM   #9
freddi is offline freddi  United States
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a nice K-tube tweeter
the (smaller) system only weighs 1680lb - does look like a 2"ipe - ?

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Old 16th November 2015, 03:52 AM   #10
Pano is offline Pano  United States
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a nice K-tube tweeter
Hmmm.... I need to try this with the BMS 4592. Wonder what sort of bandwidth you'd get?
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