Could Aleph-X run at 12V. or lower? - diyAudio
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Old 26th July 2005, 04:36 AM   #1
santi is offline santi  Thailand
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Default Could Aleph-X run at 12V. or lower?

I wish to build an Aleph-X 100 Watt/ch. But I have no experient. So I will start with the smallest one such as Grey's Aleph-X (+/-15V). Could Grey's schemetic could run at +/-12V. or lower?
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Old 26th July 2005, 01:52 PM   #2
Eric is offline Eric  United States
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I can't find the original post, but I remember Nelson stating that the Mosfets really need more than 12v to operate properly. I think that's why Grey's original schematic calls for 15v rails...

Eric
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Old 26th July 2005, 08:53 PM   #3
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Will it work?
Yes.
But...
Distortion will be higher.
You might consider recalculating the resistor that biases the Zener in the front end CCS to a lower value, say, 1.5k or so.
Actually distortion will continue to decrease as the rails are raised on up into the 25 or 30V range, above which it becomes more or less academic. It's sort of a diminishing returns sort of thing. I could have specified rails greater or less than 15V, but it seemed like a good, round figure that would be relatively easy for people to attain.

Grey
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Old 28th July 2005, 09:36 AM   #4
santi is offline santi  Thailand
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Thanks Eric, Grey
If it work at 12-13V., it's my objective. (just a trial) Then, It will be scale up to 22-25 V. later.

Grey,
Are there any changes of component value to run your schematic at 12-13 V.

Regards,
Santi
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