Aleph 5 with other FETs ??? 2SK series - diyAudio
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Old 23rd January 2005, 05:05 PM   #1
Adrie is offline Adrie  Netherlands
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Location: Rotterdam, Netherlands
Default Aleph 5 with other FETs ??? 2SK series

Has anyone tried other FETs in Aleph 5 than IRFP240 ?

I like the sound a lot but I like to hear if other have tried the Toshiba FET series 2SK1530 in this amp and how they sound vs IRF240


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Old 23rd January 2005, 10:46 PM   #2
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I suspect that you'll have to redesign the front end to get Toshiba parts to bias correctly. If I recall correctly, they're lateral MOSFETs vs. IRF's vertical, and will require lower bias voltages presented to the gate.

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Old 24th January 2005, 07:44 AM   #3
Adrie is offline Adrie  Netherlands
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Location: Rotterdam, Netherlands
Yes the Toshiba FETs are at a lower Vgs
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