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High Frequency Compression Driver Evaluation
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<blockquote data-quote="Art Welter" data-source="post: 51497" data-attributes="member: 52"><p>Re: High Frequency Compression Driver Evaluation</p><p></p><p></p><p>Bennett,</p><p></p><p>Sensitivity and frequency response of drivers on different horns and AES power ratings unfortunately only give a limited amount of comparative data.</p><p></p><p>BMS includes distortion specifications on their single page spec sheet, which is more concise than JBL and EV spec sheets in general.</p><p>Comparing the EV DH1A and the BMS 4550 and 4552 distortion specs it was obvious that the DH1A was going to smoke them in the lower response, less obvious that it would also surpass their HF output in terms of low distortion at high level.</p><p>I still was interested in how they sound, Jack Arnott graciously let me test the BMS drivers with the understanding they would most likely not result in a sale.</p><p></p><p>The failure of any manufacturer to provide distortion specifications at anything near rated AES power and lack of any readily available distortion data from B&C was the reason I felt the need to conduct a driver comparison myself.</p><p>Even though the tests took an enormous amount of time, I felt they would have been worth it had I found a driver that performed better than the 20 year old EV drivers I currently use.</p><p></p><p>Could you please provide distortion specifications for whatever the lowest distortion 3" diaphragm, 1.4"/1.5"/2" exit driver B&C currently has in their lineup.</p><p></p><p>I would like to compare them to the DE82 and DE82TN, the distortion spec sheet you sent was at conducted using 8 volts, 8 watts for 8 ohm drivers rated at 80 and 110 watts AES.</p><p>The amplitude response was missing in those tests, it would be helpful.</p><p></p><p>Do you have any distortion data for the drivers at their rated AES power?</p><p></p><p>Thanks,</p><p></p><p>Art</p></blockquote><p></p>
[QUOTE="Art Welter, post: 51497, member: 52"] Re: High Frequency Compression Driver Evaluation Bennett, Sensitivity and frequency response of drivers on different horns and AES power ratings unfortunately only give a limited amount of comparative data. BMS includes distortion specifications on their single page spec sheet, which is more concise than JBL and EV spec sheets in general. Comparing the EV DH1A and the BMS 4550 and 4552 distortion specs it was obvious that the DH1A was going to smoke them in the lower response, less obvious that it would also surpass their HF output in terms of low distortion at high level. I still was interested in how they sound, Jack Arnott graciously let me test the BMS drivers with the understanding they would most likely not result in a sale. The failure of any manufacturer to provide distortion specifications at anything near rated AES power and lack of any readily available distortion data from B&C was the reason I felt the need to conduct a driver comparison myself. Even though the tests took an enormous amount of time, I felt they would have been worth it had I found a driver that performed better than the 20 year old EV drivers I currently use. Could you please provide distortion specifications for whatever the lowest distortion 3" diaphragm, 1.4"/1.5"/2" exit driver B&C currently has in their lineup. I would like to compare them to the DE82 and DE82TN, the distortion spec sheet you sent was at conducted using 8 volts, 8 watts for 8 ohm drivers rated at 80 and 110 watts AES. The amplitude response was missing in those tests, it would be helpful. Do you have any distortion data for the drivers at their rated AES power? Thanks, Art [/QUOTE]
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