ATC SM75-150S Dome Mid Measurement Data - Page 7 - diyAudio
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Old 16th January 2013, 04:57 PM   #61
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Zaph has measured this...

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Old 16th January 2013, 09:10 PM   #62
jpak is offline jpak  United States
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Very helpful, thanks! Do you happen to have the CSD?
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Old 16th January 2013, 09:21 PM   #63
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The images are coming from Zaph's blog. Here is the CSD. Some kinda resonant thing starting at 4k, as you'd expect from the FR. Note the scale on both axes is rather unflattering, not that I think that's a bad thing.

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Old 16th January 2013, 09:47 PM   #64
Helmuth is offline Helmuth  Netherlands
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I found this on the web.
Attached Images
File Type: jpg ATC SM75-150 metingen.jpg (46.2 KB, 373 views)
File Type: jpg ATC SM75-150S-on axis FR.jpg (40.3 KB, 141 views)
File Type: jpg ATC 75-150S 8 ohm.jpg (37.7 KB, 104 views)
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Old 12th November 2014, 08:30 AM   #65
Raj1 is offline Raj1  United Kingdom
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Also a good write up here on the ATC SM75-150S

https://app.box.com/s/j1pwj8exbmioz350nu0n
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Old 13th November 2014, 02:31 PM   #66
Hylle is offline Hylle  Denmark
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Amazing how high a Qm this driver has, when you consider the doubel suspension system an all. I guess it must be a no-conduction voicor former it is made with, even I would not think it would be that standard when this driver was developed.
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Old 14th November 2014, 12:30 PM   #67
pos is offline pos  Europe
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Impressive indeed, and a 0.3 Rms.
Thanks for the link!
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Old 14th November 2014, 04:33 PM   #68
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Absolutely the best midrange driver in the world. I have used this extensively and nothing comes close. It has an openness and sound that is very unique and can take gobs of power when used correctly. I use it crossed to the Scan BE tweeter at 3.5 and 700 to the 12" ATC woofer.

Last edited by Audio Elite; 14th November 2014 at 04:48 PM.
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Old 15th November 2014, 12:03 AM   #69
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Wonderfull, so what's the essence of this beauty, what makes it tick. Is it the low distortion / the powerhandling? Any thoughts about getting close to this Holy midrange Grail without shelling out such an amount of money? And yes i heard this midrange driver quite some times, not so happy about the bassdriver in the big ATC speakers. Ye Olde English damping of Ye paper cone. Choke Ye old live out of it isn it?

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Old 15th November 2014, 11:18 AM   #70
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A proud owner of 2 pair plus one in my CC of the 150s
Also have 2 pair of non s
And 2 pair of the Volt vm752
These are all amazing mids built for serious amplification. ..
I KNOW
I KNOW
They are expensive but they will go beyond most typical mids for my enjoyment. ....maybe not everyone elses.
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