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ML Aerius import from USA
ML Aerius import from USA
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Old 9th July 2017, 09:21 AM   #11
Dsmithtech is offline Dsmithtech  United Kingdom
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Well job complete and successful. Able to defeat mains freq (50hz) switch and change to 230v mains operation. Thanks to all contributors I now have my Aerius ML's back as my primaries.
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Old 15th July 2017, 06:15 PM   #12
bolserst is offline bolserst  United States
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Location: Fort Worth, Texas
Thanks for sharing your successful outcome.

Based on PMs I have received, there seems to be a fair amount of interest in understanding the 60Hz discrimination circuit built around (IC1A/B). It is a little known bandpass circuit arrangement capable of high-Q responses with independent specification of frequency and Q using just a few passive parts. Attached is response of the Martin Logan 60Hz discrimination circuit along with an app. note on the DABP topology. I have also seen this circuit described as a Fliege type bandpass filter.
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File Type: png ML_DABP_60Hz.png (14.8 KB, 34 views)
File Type: png ML_DABP_note.png (121.1 KB, 36 views)
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