Compression Driver for the IWATA-300 - diyAudio
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Old 3rd February 2011, 01:29 PM   #1
doug20 is offline doug20  United States
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Default Compression Driver for the IWATA-300

Im looking for a decent 2" CD for the IWATA-300 that Im considering.

So far I have found the RADIAN 760NEOPB to meet my needs, I just do not know how it really measures and the $300 price tag is steep but I assume all these 2" CDs are going to be expensive.
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Old 3rd February 2011, 01:52 PM   #2
Gluca is offline Gluca  Italy
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Vintage? I'd go for JBL 2482
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Old 3rd February 2011, 03:49 PM   #3
Jmmlc is offline Jmmlc  France
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Hello,

See my message about the driver used by "Musique Concrête" in their "Grande Castine":

Driver for AH-160hz horn: cd vs cone?

Best regards from Paris, France

Jean-Michel Le Cléac'h
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Old 3rd February 2011, 06:52 PM   #4
ScottG is offline ScottG  United States
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Quote:
Originally Posted by doug20 View Post
Im looking for a decent 2" CD for the IWATA-300 that Im considering.

So far I have found the RADIAN 760NEOPB to meet my needs, I just do not know how it really measures and the $300 price tag is steep but I assume all these 2" CDs are going to be expensive.
I don't think that 300 US is expensive for a 2" exit driver, but it's relative.

The real questions are:

Is this a "full-range" driver, or is it going to be used for mid-driver applications only?

What's the entrance angle for the horn?


If it's being used without a tweeter, then I'd opt for the 18sound ND1460A version with the 2" exit: the ND2060A. It's a 3 inch diameter aluminum driver with a very extended freq. response and a VERY linear impedance. (..it's impedance profile alone could save you a lot of heartache.)

http://www.loudspeakersplus.com/prod...-SOUNDND2060A/

..costs more, but almost certainly worth it.

Here are Loudspeakerplus's other offerings:

http://www.loudspeakersplus.com/cate...Drivers/1.html

Obviously the Selenium and the PAudio are considerably lower in cost.
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Last edited by ScottG; 3rd February 2011 at 07:12 PM.
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Old 3rd February 2011, 06:56 PM   #5
ra7 is offline ra7  United States
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I recently acquired the JBL 2445. In a cheap, smallish horn, it is quite flat from about 1k through to 16k. John (aka carpenter) uses it in his big tractrix horn from 400 Hz to 16kHz.
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Old 3rd February 2011, 07:35 PM   #6
doug20 is offline doug20  United States
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Quote:
Originally Posted by ScottG View Post
I don't think that 300 US is expensive for a 2" exit driver, but it's relative.

The real questions are:

Is this a "full-range" driver, or is it going to be used for mid-driver applications only?

What's the entrance angle for the horn?


If it's being used without a tweeter, then I'd opt for the 18sound ND1460A version with the 2" exit: the ND2060A. It's a 3 inch diameter aluminum driver with a very extended freq. response and a VERY linear impedance. (..it's impedance profile alone could save you a lot of heartache.)

18 SOUND_ND2060A ND2060A

..costs more, but almost certainly worth it.

Here are Loudspeakerplus's other offerings:

2" Exit Compression Drivers

Obviously the Selenium and the PAudio are considerably lower in cost.


I will have to ask on the group buy thread what the entrance angle is. The application will be a 2-way design with this CD doing 500Hz to 15KHz.

Most of the CDs I have looked at today do not have impedance curves and the ones that do definitely are messy so great point about the 18sound choice above (The measuremnts on eighteensound.com are nice for it).

I was also considering the P-audio for obviously its price point but also the Radian 760PB because I own the Radian 475Bs and like them but I have not found the impedance measurements on that choice.
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Old 3rd February 2011, 07:38 PM   #7
doug20 is offline doug20  United States
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Quote:
Originally Posted by ra7 View Post
I recently acquired the JBL 2445. In a cheap, smallish horn, it is quite flat from about 1k through to 16k. John (aka carpenter) uses it in his big tractrix horn from 400 Hz to 16kHz.
I have been on some pro audio sites looking for the JBL 2446/2447 models. They seem to go for around $300 to $400 each.

One thing is for sure this 2" CD search shows me that its an expensive choice.
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Old 3rd February 2011, 08:07 PM   #8
Flaesh is online now Flaesh  Russian Federation
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Quote:
Originally Posted by doug20 View Post
..JBL 2446/2447 models. They seem to go for around $300 ..
new????
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Old 3rd February 2011, 09:30 PM   #9
ra7 is offline ra7  United States
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That seems about right Doug. I got mine for close to that from Jammin Jersey, but I would not recommend buying from them.

PE has some good 2" CDs... I believe Radian has some 2" exit drivers that are not astronomically expensive.
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Old 3rd February 2011, 09:41 PM   #10
ScottG is offline ScottG  United States
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Quote:
Originally Posted by doug20 View Post
I will have to ask on the group buy thread what the entrance angle is.
You know, you could always make an adapter for one of your 1" exit drivers and do some measuring and listening to see what you come up with.
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