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3rd January 2011, 07:46 PM
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#1 |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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FS: Intact Audio (Slagle-former) Autoformer Volume Controls (AVC)
For sale is a standard pair of the Intact Audio Autoformer Volume Controls. Comes with a switch. These have been stacked for full inductance, but I'll restack differently if you like.
More info here. $160 shipped in the U.S. (no PayPal fees).
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http://www.ecpaudio.com |
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5th January 2011, 07:44 PM
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#2 |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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Bump
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http://www.ecpaudio.com |
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7th January 2011, 08:59 PM
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#3 |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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Bump again -- will consider trade for Sennheiser HD-600's or Beyer DT880 (32 or 250 ohm versions).
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7th January 2011, 09:18 PM
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#4 |
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diyAudio Member
Join Date: Jul 2008
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would you happen to know the inductance, bandwidth, and current rating of these?
I have some test gear that uses an autoformer. regular wall volume control autoformers do not have enough inductance. |
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7th January 2011, 10:37 PM
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#5 | |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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Quote:
Anyway, cores are 80% permalloy (nickel) and butt stacked are ~20H (impedance=2K5 @ 20Hz, and over 100K at 1KHz) and fully interleaved are ~170H (over 20K at 20Hz and over 1M at 1KHz). Frequency response on the low end depends on how they are stacked, and is over 200K on the high end. Current rating is ~0. If your offset is much more than a few minivolts, you'll need a DC blocking cap. Some details: intact audio
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http://www.ecpaudio.com Last edited by dsavitsk; 7th January 2011 at 10:39 PM. |
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10th January 2011, 01:37 AM
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#6 |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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Bump
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10th January 2011, 05:43 AM
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#8 | |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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Quote:
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14th January 2011, 08:12 PM
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#9 |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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Still available.
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