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Old 3rd March 2012, 08:32 PM   #1001
djn is offline djn  United States
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SO what is the best CD for the Iwata? I assume it is a 2" driver.
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Old 3rd March 2012, 08:44 PM   #1002
jzagaja is offline jzagaja  Poland
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Everyone know BMS and Radian both original and Truextent. Which next? 18sound ND2060A?
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Old 3rd March 2012, 11:04 PM   #1003
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Has anyone tried Altec 291-16a 1.4" drivers with the Iwatas? Attached with an adapor how would the combination perform compared to the modern BMS Radian drivers? What do you think? Any opinion, guesses, speculations are welcomed.
David
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Old 5th March 2012, 07:34 PM   #1004
jzagaja is offline jzagaja  Poland
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Cellulose, carbon and alu domes, different size and 44.5mm coil. Time to make same moving coil diaphragms ;-)

Optimum dome height ~8mm@44.5mm diameter for OS means HF roll-off frequency, also mismatch between phase plug curvature and diaphragms forms different roll-off e.g. differences between 18sound diaphragms and STX.
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Old 7th March 2012, 02:34 PM   #1005
Scaper is offline Scaper  United States
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Thanks to all the DIY guys behind the actual design itself.......

Thanks to forum member jzagaja and Autotech for helping with the prototypes and getting the fiberglass models produced. And then I decided 'to go for broke' to get one made that anyone can afford.

The mass production SEOS™-12 is finally ready for pre-orders!

Plastic SEOS-12 Pre-Order DIY Sound Group




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Old 7th March 2012, 04:22 PM   #1006
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Quote:
Originally Posted by djn View Post
SO what is the best CD for the Iwata? I assume it is a 2" driver.
I've been using the JBL 2446h CDs with aftermarket aluminum diaphragms (Radian I believe) with very good results. However I do look forward to trying the Truextent diaphragms in the near future.

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Old 8th March 2012, 04:58 PM   #1007
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Hello Scaper,
the SEOS™-12 can fit the Radian PB475 1" driver with good results?
What do you think about?
Thanks
Guglielmo
Italy
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Old 9th March 2012, 09:01 PM   #1008
jzagaja is offline jzagaja  Poland
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SEOS-10 flatpack evaluation box. Available soon as a kit.
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Old 9th March 2012, 09:43 PM   #1009
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Quote:
Originally Posted by Carl_Huff View Post
I've been using the JBL 2446h CDs with aftermarket aluminum diaphragms (Radian I believe) with very good results. However I do look forward to trying the Truextent diaphragms in the near future.

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Nice set up you have there. Can you give some specifics on the drivers in the VOT boxes and the crossover? Are you using the original Iwatas that does not have metal reinforment in the driver flange area? I am wondering about long term stability of the horn hanging off the drivers like you have. Do you think they will hold up over time and not develope fractures in the stressed areas?
Thanks,
David

PS I'm still wondering about Altec drivers used in Iwatas. Anybody have any experiences with this combo?
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Old 9th March 2012, 09:44 PM   #1010
Face is offline Face  United States
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Any preliminary specs for woofer cutout diameter and enclosure volume for the SEOS-10 flat pack? Thanks.
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