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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Art Welter" data-source="post: 137318" data-attributes="member: 52"><p>Re: New DIY Mid High</p><p></p><p>Quote Originally Posted by Art Welter </p><p><em>4) That is simply not the case, larger diaphragm area of a given material thickness results in more output. The HF diaphragm of the 4594HE is relatively small. If you were to attempt to get 10 dB more output at 10kHz compared to a DH1A, the 4594HE HF coil would vaporize.</em></p><p></p><p></p><p>Jack,</p><p></p><p>I'll explain: The BMS 4594 does have +3dB higher power rating than the EV DH1A. The 4594 "118 dB sensitivity" is on a 40 x 20 horn which is +3 dB over the same driver on a 60 x 40 horn, 115 dB at it's midband, as expected three dB more sensitive than a BMS 4550 on a 90 degree horn.</p><p>I tested the EV DH1A on the same Maltese horn as the BMS 4550 and BMS 4552, as you can see in the screen shot below, they are nearly identical in sensitivity, but the BMS drivers had much less output before distortion. If the 4592 HF diaphragm is smaller than the 4550 or 4552, it would also have less potential output.</p><p></p><p>How does the Sd of the 4592 HF diaphragm compare with the the 4550 or 4552?</p><p></p><p>Art</p></blockquote><p></p>
[QUOTE="Art Welter, post: 137318, member: 52"] Re: New DIY Mid High Quote Originally Posted by Art Welter [I]4) That is simply not the case, larger diaphragm area of a given material thickness results in more output. The HF diaphragm of the 4594HE is relatively small. If you were to attempt to get 10 dB more output at 10kHz compared to a DH1A, the 4594HE HF coil would vaporize.[/I] Jack, I'll explain: The BMS 4594 does have +3dB higher power rating than the EV DH1A. The 4594 "118 dB sensitivity" is on a 40 x 20 horn which is +3 dB over the same driver on a 60 x 40 horn, 115 dB at it's midband, as expected three dB more sensitive than a BMS 4550 on a 90 degree horn. I tested the EV DH1A on the same Maltese horn as the BMS 4550 and BMS 4552, as you can see in the screen shot below, they are nearly identical in sensitivity, but the BMS drivers had much less output before distortion. If the 4592 HF diaphragm is smaller than the 4550 or 4552, it would also have less potential output. How does the Sd of the 4592 HF diaphragm compare with the the 4550 or 4552? Art [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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