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Old 23rd March 2012, 04:03 PM   #1041
gedlee is offline gedlee  United States
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I would agree that this is benificial, but I would not describe it as optimal.
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Old 25th March 2012, 03:32 PM   #1042
jzagaja is offline jzagaja  Poland
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Different drivers on 12" OS waveguide (30deg).
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Old 25th March 2012, 04:17 PM   #1043
jzagaja is offline jzagaja  Poland
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DE500 with CD compensation taken from 30 deg.
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Old 25th March 2012, 04:42 PM   #1044
jzagaja is offline jzagaja  Poland
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AMT vs. DE500. Let's do some horn for AMT
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File Type: jpg ESSblueoxproaudiospeakerwithtweeter.jpg (45.0 KB, 488 views)
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Old 25th March 2012, 05:45 PM   #1045
Paul W is offline Paul W  United States
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Agree! Opening area for AC 30130 is 35mm X 133mm.
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Old 26th March 2012, 07:37 AM   #1046
pk is offline pk  Denmark
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Hi jzagaja,

Which AMT driver are you working with?

Thanks!

Best regards
Peter


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AMT vs. DE500. Let's do some horn for AMT
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Old 26th March 2012, 12:25 PM   #1047
jzagaja is offline jzagaja  Poland
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Aurum Cantus 30130 or Harwood AM35, "Big" AMT.
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Old 26th March 2012, 12:27 PM   #1048
pk is offline pk  Denmark
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Thanks for the reply - and please keep up the good work!

Best regards
Peter

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Aurum Cantus 30130 or Harwood AM35, "Big" AMT.
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Old 26th March 2012, 01:25 PM   #1049
phusis is offline phusis  Denmark
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Different drivers on 12" OS waveguide (30deg).
Thanks for providing these measurements.

The metal cone-equipped drivers, DE500 and D800Ti, have a somewhat "nervous" response above 10kHz - especially the latter, which I gather is break-up modes in the diaphragms, though it seems they may have an advantage in ultimate extention compared to the polyester cones. With the exception of the BMS 4524 all drivers have notable peaks in the upper mids, whereas the 4524 has a slight dip around 3kHz - though still by far the most well behaved of all.

Being that I have heard both the D800Ti and 4524(incorporated in my current iteration of the Auto-tech Mummy 2's) via named waveguide their measured performances correlate quite well why my listening impressions. In fact the 4524 appears to be more extended as well, though it may have more to do with its performance here being better differentiated and notably smoother.

Last edited by phusis; 26th March 2012 at 01:27 PM.
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Old 26th March 2012, 05:19 PM   #1050
jzagaja is offline jzagaja  Poland
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D500 rings slightly near 20kHz while D800 between 10-20kHz. Trying to get NSD1095N. New 18sound beryllium driver is now listed on website.
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