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Old 6th July 2005, 04:43 AM   #1
rsbay is offline rsbay  Germany
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Question Aleph Ono and FET matching


I know I have to match the input FET's Q10 ... Q13 (2SK170) in the
moving coil part of the Aleph Ono. The question is how I should do
this and which are the parameters I have to take care of ?

Should I also match other devices in this circuit ?


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Old 6th July 2005, 05:23 AM   #2
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Default Aleph Ono and FET matching

Fetmatcher circut
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Old 7th July 2005, 05:27 AM   #3
rsbay is offline rsbay  Germany
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Hello Walter,

thanks for your reply. Do you know with Idss is preferred for the Aleph Ono ?

Should I also match the IRFD9110 ?


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Old 7th July 2005, 08:51 AM   #4
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you will need a fairly low Idss to get the highest gain out of the ONO. I think it was around 4mA. Thereīs a large thread concerning this.
If you canīt get 170grīs you can also use blīs with different source resistors but then you canīt choose the highest gain setting. This shouldnīt be a problem with all but the most silent MCīs

een ooievaar is geen konijn want zijn oren zijn te klein!
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Old 10th November 2005, 03:37 PM   #5
VS is online now VS  Portugal
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Default Re: Aleph Ono and FET matching

Originally posted by WALTER BURKHARD
Fetmatcher circut


By the PCB color it seems you also have build a XOno clone. The original XOno have 2SK170BL or GR? And what about 2SK389 also ?

Can you resume all the diferences bettewn Ono and XOno?

Best regards,
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