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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Peter Morris" data-source="post: 133820" data-attributes="member: 652"><p>Re: New DIY Mid High</p><p></p><p></p><p></p><p>Ivan,</p><p></p><p>The DH1A is rated at 75 watts</p><p></p><p><a href="http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&sqi=2&ved=0CB0QFjAA&url=http%3A%2F%2Fwww.electrovoice.com%2Fdownloadfile.php%3Fi%3D1156&ei=LaK_VJ24DcTJmAXjn4GwAg&usg=AFQjCNGV5Kr1FWtbYKi4fcFDPbMyafmEcQ" target="_blank">http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&sqi=2&ved=0CB0QFjAA&url=http://www.electrovoice.com/downloadfile.php?i=1156&ei=LaK_VJ24DcTJmAXjn4GwAg&usg=AFQjCNGV5Kr1FWtbYKi4fcFDPbMyafmEcQ</a></p><p></p><p>The VHF section of the 4594 is rated at 80 watts</p><p></p><p><a href="http://www.bmsspeakers.com/index.php?id=4594nd_specification" target="_blank">http://www.bmsspeakers.com/index.php?id=4594nd_specification</a></p><p></p><p>I would suggest that the DH1A rating is a little conservative and the BMS a little optimistic ... but 10dB more efficiency is a lot given they have similar power handleing!</p><p></p><p>As a further comparison the DH1A is rate at 114 dB / W / m 40 x 20 horn; the 4594 is rate at 118dB on a 40 x 20 horn, and the low section of the 4594 is rate at 150 watts. i.e the low section is 4 dB more efficient and takes 3dB more power ... 7dB more not to mention its operating in combination with an 80 watt VHF driver.</p><p></p><p><em>..... perhaps I'm wrong .... you may need to replace the HF driver in your J1s and SH96H0s with DH1A's</em> :idea:8O~8-O~:shock: .... :razz:</p><p></p><p>My experience so far is the 4594 in use is probably about 6dB up on your typical large format compression driver. I'm sure there is a good reason why you guys are using it.</p></blockquote><p></p>
[QUOTE="Peter Morris, post: 133820, member: 652"] Re: New DIY Mid High Ivan, The DH1A is rated at 75 watts [URL]http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&sqi=2&ved=0CB0QFjAA&url=http%3A%2F%2Fwww.electrovoice.com%2Fdownloadfile.php%3Fi%3D1156&ei=LaK_VJ24DcTJmAXjn4GwAg&usg=AFQjCNGV5Kr1FWtbYKi4fcFDPbMyafmEcQ[/URL] The VHF section of the 4594 is rated at 80 watts [URL]http://www.bmsspeakers.com/index.php?id=4594nd_specification[/URL] I would suggest that the DH1A rating is a little conservative and the BMS a little optimistic ... but 10dB more efficiency is a lot given they have similar power handleing! As a further comparison the DH1A is rate at 114 dB / W / m 40 x 20 horn; the 4594 is rate at 118dB on a 40 x 20 horn, and the low section of the 4594 is rate at 150 watts. i.e the low section is 4 dB more efficient and takes 3dB more power ... 7dB more not to mention its operating in combination with an 80 watt VHF driver. [I]..... perhaps I'm wrong .... you may need to replace the HF driver in your J1s and SH96H0s with DH1A's[/I] :idea:8O~8-O~:shock: .... :razz: My experience so far is the 4594 in use is probably about 6dB up on your typical large format compression driver. I'm sure there is a good reason why you guys are using it. [/QUOTE]
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