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High Frequency Compression Driver Evaluation
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<blockquote data-quote="Art Welter" data-source="post: 51540" data-attributes="member: 52"><p>Re: High Frequency Compression Driver Evaluation</p><p></p><p></p><p></p><p>Jack,</p><p></p><p>Thank you again for the loan of the interesting drivers.</p><p>I was unaware these drivers use a ring radiator type diaphragm.</p><p>Could you post a photo of the diaphragm?</p><p></p><p>The low frequency response output was considerably less (and LF distortion much higher) for the 1” exit BMS drivers than the 1” Eminence PSD 2002, I would think the diaphragm surface area (SD) must be quite a bit less.</p><p></p><p>In my rough measurement of the throat angle of the 4550 and 4552 they looked identical.</p><p></p><p>Assuming the diaphragm and voice coil are the same, I would attribute the lesser LF response to the smaller compression chamber the 4552 has compared to the 4550.</p><p></p><p>Could you please check with the factory and find the exact exit angle for both drivers, and SD of each diaphragm?</p><p></p><p>Art</p></blockquote><p></p>
[QUOTE="Art Welter, post: 51540, member: 52"] Re: High Frequency Compression Driver Evaluation Jack, Thank you again for the loan of the interesting drivers. I was unaware these drivers use a ring radiator type diaphragm. Could you post a photo of the diaphragm? The low frequency response output was considerably less (and LF distortion much higher) for the 1” exit BMS drivers than the 1” Eminence PSD 2002, I would think the diaphragm surface area (SD) must be quite a bit less. In my rough measurement of the throat angle of the 4550 and 4552 they looked identical. Assuming the diaphragm and voice coil are the same, I would attribute the lesser LF response to the smaller compression chamber the 4552 has compared to the 4550. Could you please check with the factory and find the exact exit angle for both drivers, and SD of each diaphragm? Art [/QUOTE]
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