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Old 20th November 2012, 01:48 PM   #1231
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Quote:
Originally Posted by hum4god View Post
Hi jzagaja

did you ever get a chance to listen and measure the B&C DCM50 with one of your horns?
i would be especially interested how it sounds and measures w/ the Iwata 300 ?

thanks
Quote:
Originally Posted by jzagaja View Post
Not yet. We use BMS and Radian/Truextent.

jzagaja, was there any development re B&C DCM50 and your horns?

if you haven't had a chance, what would you recommend as the best horn from your production to extend a lower end as much as possible (recommended by B&C is 400hz but i would love at least 350hz with few watts...) while having clean dispersion without beaming or other nasty artefacts.

also i can't find more comments on your minphase 200 horn, the price is much more affordable than JMLC and it looks like it has a very similar lip-over. how does it behave in the mids?

are there any plans for really big OSWG, like 18" or similar? since i've heard geddes OSWG (from summa), i think it's a way to go in smaller rooms....

Last edited by anubisgrau; 20th November 2012 at 02:02 PM.
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Old 20th November 2012, 03:43 PM   #1232
jzagaja is offline jzagaja  Poland
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B&C DCM50 is uknown for me. JMLC-200 is too beamy for your needs. Minphase with BMS 4590 is 400Hz (-6dB) and optically large, Biradial still untested.

Large SEOS/EOS - still waiting for group buy (end of this year?).
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Old 20th November 2012, 03:49 PM   #1233
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thank you, re beaming mind that the desired range for DCM50 in my application is 350-1.5 (even less)....
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Old 20th November 2012, 03:55 PM   #1234
jzagaja is offline jzagaja  Poland
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Now it's simple - Tractrix200.
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Old 20th November 2012, 07:50 PM   #1235
jzagaja is offline jzagaja  Poland
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Today I've learned how to store graphs in BK2012. This is quite easy - you have to chose plotter as output device, then open in ABViewer for example and format. Quick and dirty comparison between 12BR70+D800Ti vs. 12B100R+DE500. Level was quite low a bit below 1Vrms but I couldn't set more because of family members. I'm sending Mummy 4 (12BR70+D800Ti) with minimalistic crossover to Lukasz for voicing, attaching Aquaplased diaphragms.

Pink is 12B100R
Attached Images
File Type: png Mummy4_1.png (36.1 KB, 453 views)
File Type: png Mummy_3_4_SSR.png (52.7 KB, 449 views)
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Last edited by jzagaja; 20th November 2012 at 08:06 PM.
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Old 21st November 2012, 06:50 PM   #1236
jzagaja is offline jzagaja  Poland
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Second Aquaplased sample - one I've sent to Lukasz so couldn't compare but it looks worse. Practice needed.
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File Type: png D800Ti-Aqua-2.png (48.3 KB, 426 views)
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Last edited by jzagaja; 21st November 2012 at 07:07 PM.
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Old 22nd November 2012, 07:05 PM   #1237
tuyen is offline tuyen  Australia
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For a tweeter (bms 4540nd 1") that is to play >2000hz, would the choice of the iwata 600, e-jmlc 600 or 1000 be the best choice?

I'd be interested in a pair..

Cheers
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Old 22nd November 2012, 07:09 PM   #1238
jzagaja is offline jzagaja  Poland
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Yes any 600Hz horn or SEOS-15 waveguide is a good choice depends on your taste.
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Old 22nd November 2012, 07:57 PM   #1239
jzagaja is offline jzagaja  Poland
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For comparison Harwood AM35 direct radiator with 6" woofer.
Attached Images
File Type: png AMT.png (53.5 KB, 392 views)
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Old 24th November 2012, 03:46 PM   #1240
jzagaja is offline jzagaja  Poland
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Mummy 3 (12B100R+DE500) measured in BK 2012 analyzer with and without reference resistor versus LIMP with reference resistor 18Ohm. Obsereve change in tuning frequency and Q of resonance peaks.
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File Type: png iimpedance_mummy_3_BKJ.png (137.2 KB, 373 views)
File Type: png iimpedance_mummy_3_ARTA.png (20.5 KB, 91 views)
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