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Thread: 4" coil Nd driver history, revisited

  1. #16
    Senior Member pos's Avatar
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    Radian 4" diaphragms used in the 950PB are also sold separtatly as replacement diaphragm for JBL 4" compression drivers.
    4" Truextent diaphgrams fit drivers of both brand.
    So I don't see why a 950PB could not accomodate a 4" JBL diaphragm.

  2. #17
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    Radian makes different diaphragms for their own drivers and JBL drivers. The seating differs.

    1245 for JBL. 1750ZT or 1760PB/ZT for Radian drivers.

  3. #18
    Senior Member pos's Avatar
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    The 1245 is the 4" diaphragm used in the 950PB/951PB and as a replacement for JBL drivers:
    Radian Audio manufactures a premium 4” compression driver diaphragm, model 1245, for its own model 950 PB compression driver. The Radian model 1245 also fits into several JBL™ 1.4” and 2” exit compression drivers, including model 2445, 2446, 375, 2440, 2441, 2447. 2450, and 2451 model compression drivers.

  4. #19
    Senior Member jerv's Avatar
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    I know for a fact that JBL 4" dias fit Radian 950.
    I have tried it myself with the d8r2450 and and d8r2452.

  5. #20
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    You are right. Sorry for the confusion I have created :-)

    1245
    :

    Radian Audio manufactures a premium 4” compression driver diaphragm, model 1245, for its own model 950 PB compression driver. The Radian model 1245 also fits into several JBL™ 1.4” and 2” exit compression drivers, including model 2445, 2446, 375, 2440, 2441, 2447. 2450, and 2451 model compression drivers. Available in 8 or 16 ohms.

  6. #21
    Senior Member Champster's Avatar
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    Fantastic thread and thanks to subwoof for your added depth of knowledge!!! The guys on this forum are so knowledgeable. Thanks!
    Paul

  7. #22
    Senior Member martin_wu99's Avatar
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    Great post! very helpful!thank you,Subwoofer
    46 lover

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