I'm cloning legendary high-end preamp from Threshold in model Fet-10 HL.
It's use dual j-fet 2N5566, diode protect mosfet 3N172, PN4250A, MPSA42 / 92.
3N172 is very hard to obtain more than other number. How can I use hexfet IRF...XXX... or other mosfet/hexfet instead it ?
I use 2SK289 instead 2N5566 on original PCB it's work
Need a quickly reply
AHT
It's use dual j-fet 2N5566, diode protect mosfet 3N172, PN4250A, MPSA42 / 92.
3N172 is very hard to obtain more than other number. How can I use hexfet IRF...XXX... or other mosfet/hexfet instead it ?
I use 2SK289 instead 2N5566 on original PCB it's work
Need a quickly reply
AHT
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Sorry to ask, but are you gonna make those available to DIY members?Now designing a PCB. It's coming soon.
Legendary?
I have memories about the Threshold 400A and the 4000 back in the late 197x'es. That was the times! The amps mentioned was just about the highest regarded, at that time You should hear those connected to a pair of JBL 4330 studio monitors!!!!
Wauw, as far as I remember I am still suffering
Steen.
Heaven of DIY
Thanks for your reply Mr.Nelson Pass
Now I use ZVP3310 instead 3N172 it's OK but I feel some difference after increase a gain it's too much more than original...( I think) maybe it's the effect of 2SK389 which I instead of 2N5566
Today I try to reduce a gain and make a PCB I like your GOLDPLATE PCB it's look so beautiful now I'll modify to single layer for a low cost PCB.
I'm to be convince about this product model very much.
It's use J-FET circuitary which best of the world
regard
AHT
Thanks for your reply Mr.Nelson Pass
Now I use ZVP3310 instead 3N172 it's OK but I feel some difference after increase a gain it's too much more than original...( I think) maybe it's the effect of 2SK389 which I instead of 2N5566
Today I try to reduce a gain and make a PCB I like your GOLDPLATE PCB it's look so beautiful now I'll modify to single layer for a low cost PCB.
I'm to be convince about this product model very much.
It's use J-FET circuitary which best of the world
regard
AHT
Attachments
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- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
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