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Mini Karlsonator (0.53X) with Dual TC9FD's
Mini Karlsonator (0.53X) with Dual TC9FD's
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Old 29th October 2014, 03:06 AM   #991
djn is offline djn  United States
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This might be a good one for a little itty bitty K

Fountek FR58EX 2" Neodymium Full Range Speaker Driver

The price is right!

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or this one

http://www.parts-express.com/tectoni...37e554aa01ed15

Last edited by djn; 29th October 2014 at 03:31 AM.
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Old 29th October 2014, 05:03 AM   #992
prezden is offline prezden  Canada
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Well my mini's are almost finished and I am thrilled
Thanks X and everyone else for all your help.
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File Type: jpg mini-k 2.jpg (119.0 KB, 378 views)
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Old 29th October 2014, 05:39 AM   #993
multi is offline multi  Australia
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Default Karlsons

I am trying two B&C 15HCX76 in Karlsons. Sound excellent.
Also tried a 15 N75 Chinese bass speaker { QTS of 0.26}with separate compression driver. Sounds great yet, in reflex cabinet sounded bass lite.
What T&S parameters work best in the Karlsons
Phil
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File Type: pdf 15CXN76-1.pdf (464.6 KB, 25 views)
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Old 29th October 2014, 10:22 AM   #994
xrk971 is offline xrk971  United States
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Mini Karlsonator (0.53X) with Dual TC9FD's
Quote:
Originally Posted by prezden View Post
Well my mini's are almost finished and I am thrilled
Thanks X and everyone else for all your help.
Prezden,
Those look fantastic! (They look done - what is left to do?)
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Old 29th October 2014, 10:26 AM   #995
xrk971 is offline xrk971  United States
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Mini Karlsonator (0.53X) with Dual TC9FD's
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Originally Posted by multi View Post
I am trying two B&C 15HCX76 in Karlsons. Sound excellent.
Also tried a 15 N75 Chinese bass speaker { QTS of 0.26}with separate compression driver. Sounds great yet, in reflex cabinet sounded bass lite.
What T&S parameters work best in the Karlsons
Phil
A Karlson (like a K15) is an 8th order bandpass and different than the Karlsonator in this thread. The Karlsonator is a mass loaded TQWT with bandpass output K aperture. The Karlson, proper, likes low Qts (less than 0.35) powerful motor drivers as you have seen. The Karlsonator is more forgiving and works with all sorts of Qts from 0.3 to 0.9.
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Old 29th October 2014, 03:23 PM   #996
djn is offline djn  United States
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Hey X, I didn't know that about the Karlsonator. Help me understand the term "bandpass output K aperture"
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Old 29th October 2014, 05:08 PM   #997
xrk971 is offline xrk971  United States
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Mini Karlsonator (0.53X) with Dual TC9FD's
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Originally Posted by djn View Post
Hey X, I didn't know that about the Karlsonator. Help me understand the term "bandpass output K aperture"
Since the TL output passes over the front face of the driver, albeit with lots of leakage due to the Karlson aperture getting wider and wider - this feedback of the rear side of the driver to the front side of the driver causes a mild band pass effect. That is, it may reduce the HF extension in a similar way to a tapped horn or a slot loaded band pass sub. The effect is less pronounced with small drivers sitting in a large K aperture. However, on a box with a larger driver that fills up and extends deeper up into the K aperture top, there will be more of an effect if a low pass filter from having the sound from the back pass the front of the cone.
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Old 29th October 2014, 05:53 PM   #998
djn is offline djn  United States
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Ah, very good X. that makes a lot of sense. I was listening to the Fostex 206 (or 208 maybe) last weekend and it seems a little shrill above 7khz so would the band pass in this case knock that down some??? Also, it was really beamy, so how would the slanted face of the driver affect the off axis response if it was not pointed straight at me?
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Old 29th October 2014, 05:58 PM   #999
xrk971 is offline xrk971  United States
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Mini Karlsonator (0.53X) with Dual TC9FD's
The K-aperture in a Karlsonator should reduce the highs and smooth out the frequency response profile even. The lens effect of the K-aperture should reduce beaming. It does a lot of nice things, however, there will be a little bit of coloration (some dips in the mid range - mild effect). Lining the inside of the K-aperture and the front chamber with felt can reduce the dips.
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Old 29th October 2014, 06:02 PM   #1000
djn is offline djn  United States
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THanks X. I have been going back and forth about swapping out my tri-amped system for a good full range system. That might be a good place to start.
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