klam projector type with 8" fullrange

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freddi

freddi

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Joined 2005
#1
15lb of fury with $12.60 Sammi 8" diameter 2" vc speaker.
It would play maybe 8-10dB louder than this video as the preamp
didn't have sufficient gain that day.

An externally hosted image should be here but it was not working when we last tested it.


Sammi 8 & Wild Burro's BetsyK
An externally hosted image should be here but it was not working when we last tested it.


Up close the camera's mic overloaded but there were gargling noises present in the front chamber that can be heard up close but disappear
as one goes back.

If I understand correctly, asymmetric projectors go back to ~1961 when Karlson tried the little KR5 Rocket in a new position and the AP series included 6x9",
10" and 15" driver klams.

There was also a plan for a 12 foot device with 2-15". Jess Oliver took over the klam production in 1968.

I believe a passive K-tube supported over the dust-cap to pipe out some highs would help. (That would look ultra-krazy)

Karlson's AP100 and Oilver's Maga-clam apparently used a K-tube
waveguide with compression driver to augment Altec 421.

This klam is roughly a copy of Alan Weiss's Rocket. (Weiss worked with Karlson and holds I believe the only current K-patent) The rear chamber could be
a bit smaller to keep qtc and power handling optimum but parameters
are constantly changing with voice coil heating and position.

Video - it would play louder than this and further
YouTube - karlson projector speaker

An externally hosted image should be here but it was not working when we last tested it.

here's Lars Moseholm's spl chart to 25M of the Weiss Rocket.
The little box at the lower right-hand corner represents the
elevated speaker.
An externally hosted image should be here but it was not working when we last tested it.


a standard Karlson 8 might be more fun and the 12" with 8" driver I like
better than my Klipschorn 😀
 
Last edited:
#2
These 4th order BPs are just way too cool looking and I've been 'chomping at the bit' for years now to experiment with 6th order variants, especially since the advent of how well THs can perform, but this POS body of mine has other ideas. 🙁

GM
 
#8
freddi said:
- hands lost all color 5yr ago
Click to expand...

Only 5? Count yourself lucky. I was in my 30s when my hands quit tanning and started peeling year round, so used a prescription lotion, but after I lost insurance it was so ridiculously expensive I have to make do with heating up Vaseline enough to work as a penetrating salve when it gets too uncomfortable as every lotion I've tried including Vaseline's doesn't work well enough for any length of time.

Dunno about sleeping positions other than what works for me, but there may be some useful info here or other Google search links: What's the Best Way to Sleep?

GM
 
#9
Scottmoose said:
I read this & count my blessings for only having ye old fashioned insomnia.

Not good guys. :sad: Take care of yourselves, best you can.

Scott
Click to expand...

Thanks, but without the quality care I at least once had, AFAIK I'm stuck with no viable options but to suffer through it for another ~1.5 yrs until I'm eligible for Medicare and a semi-affordable insurance policy rider. Assuming of course our gov't. doesn't continue to take it away and/or up the rates to where I can't afford it.

GM
 
#11
They are 4th order BPs, so considering the large port, a major portion of its BW becomes a semi-homogenized mass (mess?) inside its filter chamber. In a HIFI/HT app, I wonder if either placing it on end on the floor or from the ceiling might work better than placed flat as shown?

Hey Freddy, you tried them on end?

GM
 
#12
freddi said:
15lb of fury with $12.60 Sammi 8" diameter 2" vc speaker.
It would play maybe 8-10dB louder than this video as the preamp
didn't have sufficient gain that day.

Karlson's AP100 and Oilver's Maga-clam apparently used a K-tube
waveguide with compression driver to augment Altec 421.

This klam is roughly a copy of Alan Weiss's Rocket. (Weiss worked with Karlson and holds I believe the only current K-patent) The rear chamber could be
a bit smaller to keep qtc and power handling optimum but parameters
are constantly changing with voice coil heating and position.

a standard Karlson 8 might be more fun and the 12" with 8" driver I like
better than my Klipschorn 😀
Click to expand...

are there plans available for this cool enclosure?
 
#13
#14
freddi said:
re: klam I might give rough dimensions worked out from a description and have to look it up - for regular Karlson here are plans for 3 sizes of factory enclosures

15" Karlson cabinet introduced fall 1952
http://home.earthlink.net/~buddhaboy2/K15.PNG

12" Karlsonette introduced fall 1954
http://img228.imageshack.us/img228/8316/karlsonetteib7.png

8" Karlson 8 1960's - this is a later model 8K
http://img404.imageshack.us/img404/3346/karlsonk860s.png
Click to expand...

yes, for the klam.

the last two links (12 & 8) give a 404 error.
 
#15
not sure why the 8" and 12" images came up 404 - I see them but they have a 404 prefix

15" Karlson cabinet introduced fall 1952
http://home.earthlink.net/~buddhaboy2/K15.PNG

8" klam - wings - baffle is 8.75"x8.75" - starting gap 3/8" final gap 8.75" at 14" length - you'll have to calculated the radius arc
http://img136.imageshack.us/img136/4395/kljpgrd1.jpg

12" Karlsonette introduced fall 1954
http://img228.imageshack.us/img228/8316/karlsonetteib7.png

8" Karlson 8 1960's - this is a later model 8K
http://img39.imageshack.us/img39/8552/superk8bv1.png
 
#16
freddi said:
not sure why the 8" and 12" images came up 404 - I see them but they have a 404 prefix

15" Karlson cabinet introduced fall 1952
http://home.earthlink.net/~buddhaboy2/K15.PNG

8" klam - wings - baffle is 8.75"x8.75" - starting gap 3/8" final gap 8.75" at 14" length - you'll have to calculated the radius arc
http://img136.imageshack.us/img136/4395/kljpgrd1.jpg

12" Karlsonette introduced fall 1954
http://img228.imageshack.us/img228/8316/karlsonetteib7.png

8" Karlson 8 1960's - this is a later model 8K
http://img39.imageshack.us/img39/8552/superk8bv1.png
Click to expand...

for some reason the browser is interpreting the 12" link with a relative link. however in the reply here, i get the actual link as above.

what is the height of the 8" klam box?

and is there a formula for calculating the curvature or arc of the port aperture on a surface? might it just be any "lazy" or curved triangle cutout from the top center to the bottom corners?

thanks.
 
#17
height on my klam (not including the decorative sides which extend past the essential structure) is ~10.25" Gregg who runs the Karlson Loudspeaker forum has compiled calculators so you can figure the radius needed to get the arc. One Karlson builder works with a number of curves to evaluate and correlate - radial, expo, tractrix, various hybrid.

a klam like this will imo have somewhat more coloration than a regular Karlson but it will work well at some distance

Calculators

Windows executable K slot, wing radius calculator and vent calculator
 
#18
freddi said:
height on my klam (not including the decorative sides which extend past the essential structure) is ~10.25" Gregg who runs the Karlson Loudspeaker forum has compiled calculators so you can figure the radius needed to get the arc. One Karlson builder works with a number of curves to evaluate and correlate - radial, expo, tractrix, various hybrid.

a klam like this will imo have somewhat more coloration than a regular Karlson but it will work well at some distance

Calculators

Windows executable K slot, wing radius calculator and vent calculator
Click to expand...

the 10.25" height would be for 3/4" material, right?

at some distance... as in outdoors or a large room then? what about a vertical orientation, firing upward?

does the driver enclosure have a port, as some of the karlsons do?

thanks for the calculator links, but i use linux. maybe these are reduced to a set of formula and can be input into a spreadsheet.
 
#19
yeah - 3/4" material - - pointed straight up might work better if the slot was on "the other side" - that one's rear chamber is sealed and qtc was around 0.8 with a Sammi 8" having (iirc?) qts ~0.38 - - From what I can tell, Karlson vented the rear chambers on his klams. One builder has used k-tube inside klams. (I can't run those calcs as am on old Mac)
 
#20
freddi said:
pointed straight up might work better if the slot was on "the other side" - that one's rear chamber is sealed and qtc was around 0.8 with a Sammi 8" having (iirc?) qts ~0.38 - - From what I can tell, Karlson vented the rear chambers on his klams. One builder has used k-tube inside klams.
Click to expand...

what does this mean: slot on the other side? karlson slot aperture oriented toward listener in vertically oriented woofer?

what is the slope angle of the karlson slot? someone mentioned 25 and 40 degree orientations (wrt horizontal).
 
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