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Old 1st March 2013, 12:23 PM   #31
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Sanders' white paper favors cables with medium resistance, over larger cables with lower resistance, for driving the stat panels. I know that many ESL's require a resistor at the input to the transformers to tame the resonance generated by the interaction between the panel/transformer capacitance and the transformer's leakage inductance. I don't claim to understand all this; just stating what I've read from many sources. For example; the spec sheet for Plitron's ESL transformers recommends placing a 1-Ohm resistor in front of the transformer, for starters, followed by measurements and tweaking the value up or down as needed to keep the resonance above the audio band. Some guys on this forum could whip up an equation, plugging in the panel and tranny capacitances and leakage inductance and tell you exactly the amount of added resistance needed in front of the transformer to tame the resonance. Unfortunately, I'm one of the 5/4's of the population who struggles with math!

I think Sander's point is that, since some resistance is needed in front of the transformers to tame the noted resonance, you may as well allow the cables to supply a portion of that resistance; especially if using less copper in the conductors would help further reduce the cable's inductance and/or capacitance. Perhaps someone who understands this better than I will jump in and comment here.

In my speakers, the woofers are powered separately through different amplifiers and different/larger cables, so it's not like those 14-GA Mogami's on the stats are driving the whole load anyhow.

Last edited by CharlieM; 1st March 2013 at 12:38 PM.
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Old 1st March 2013, 12:39 PM   #32
john65b is offline john65b  United States
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Yes, as someone here explained it to me in laymen's terms, the series resistance on the amp output / esl input (in this case, the cables) is there to give the amp something to work against (as opposed to a low low dc resistance of the transformer alone)...

It was an easy way to get all my amps to play nicely with my Acoustat Model 3 - put in a series resistor of 1 ohm - otherwise only the Krell clone would drive the M3s well...
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Old 3rd March 2013, 02:04 PM   #33
john65b is offline john65b  United States
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Whoops, just realized I owe some pics
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Old 25th April 2013, 05:23 PM   #34
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Quote:
Originally Posted by john65b View Post
Whoops, just realized I owe some pics
Is your film back from the developer yet....?
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Old 27th February 2014, 07:32 PM   #35
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Dying of curiosity over here...
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Old 27th February 2014, 07:42 PM   #36
john65b is offline john65b  United States
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Whoops, I am a bit behind. I also noticed that these cables are not Sanders cables but some other brand. They came 2nd hand with my 10c
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Old 27th February 2014, 08:07 PM   #37
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I'm now using the Mogami single coax cables on the woofers and these DIY cross-connected dual Belden coax cables on the ESL panels.
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Old 27th February 2014, 08:38 PM   #38
tyu is offline tyu  United States
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Thanks for the info............Vary cool speaker wire jazzman
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Old 27th February 2014, 10:43 PM   #39
john65b is offline john65b  United States
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Well finally took a look...they are not Sanders Cables...

Bass: Mogami 3103 2 conductor 4.0 mm2 OFC Speaker Cable - Japan - E137383 (UL) CL2X 75C 12 AWG
Treble: Mogami 3082 COAX 2.0 mm2 OFC Speaker Cable - Japan - E137383 (UL) CL2X 75C 15 AWG
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Last edited by john65b; 27th February 2014 at 10:48 PM.
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Old 28th February 2014, 12:08 AM   #40
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Thanks to both John and Charlie for the updates!
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