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Old 31st March 2004, 09:40 PM   #11
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Default melting coils


Those are the exact coils I 1st used in my SoZ many years ago. They lasted for more than an hour before we could smell the insulation melting on the coils.

In your case with the Alephs.. i don't see this being a problem

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Old 31st March 2004, 09:57 PM   #12
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Did you ever do any listening to the amp with out the inductors? Back a while ago, I was designing some amplifiers for data acquisition system. It all seemed ok until we ran FFT impulse response, so with the inductors in the circuit it would cause the amplifiers to fail the FFT dynamic range test.

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Old 1st April 2004, 12:35 AM   #13
moe29 is offline moe29  United States
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Jewilson - i don't know what FFT dynamic range is...

I have used these same inductors in a SOZ up to 10 watts with
no problem... BQ, weren't you at 25 watts?? I could see where
they'd probably overheat there.

There is a definite improvement to the hum or hiss that you can
hear when the amp is idling and you put your ear up to the
speakers - when these coils were added to the PSU for the ZEN amp.

I haven't tried removing them in the Aleph 2 to see how it would sound.
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Old 3rd April 2004, 10:49 PM   #14
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Another forum member recommended Hammond's 159ZL and I've found it to be an excellent choice. It has a very low DCR and a high current rating. Here's a pic of what I did:

Click the image to open in full size.

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Old 4th April 2004, 12:10 AM   #15
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Be sure to sheild those dodad.
Jim W.
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Old 5th April 2004, 09:45 PM   #16
K-amps is offline K-amps  United States
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Originally posted by MEGA-amp
Why is it always a penny for your thoughts, but you put your two cents in, somebodys making a penny here.

Thanks for the info
The way the Dollar is falling, 1 penny will = 2 cents sooner than you think.

Originally posted by moe29
These are the inductors i used in my Aleph 2. They're 2mH.
I used to get them from MCM... but they quit stocking them, last time i looked.
Try www.partsexpress.com they have some very nice Jansen Coils.

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