Ayre V3 proto topology for preamp?

maxpou · 17th March 2008, 02:35 AM

Hi Guys or Mr. Hansen,
is it possible to built a line preamp with the topology of Ayre V3 proto if i replace all mosfet with Jfets? Thank You! Maxpou

maxpou · 19th March 2008, 04:23 AM

Hi guys,
this is the schematic, i don't need balanced input. Does it can work? Thank you! Maxpou

maxpou · 20th March 2008, 04:51 PM

Hi Guys,
i test the circuit but i have a problem with my dc offset. I adjust with my R8 and R9 for 0Vdc at the output without signal but i input signal my dc drift at output. Why? thank you! Maxpou

maxpou · 20th March 2008, 05:56 PM

My schematic with value of components. Thank you! Maxpou

GRollins · 20th March 2008, 07:06 PM

In principle, you can use the amp's topology to create a preamp, but I don't see that you're following the V3 topology--at least as I remember it. If I have time, I'll dredge up the schematic and see if I'm right.
You're putting a signal in the Source of Q3 & Q4 and taking it off the Gate? There are several oddities about your schematic.

Grey

17th March 2008, 02:35 AM	#1
maxpou diyAudio Member Join Date: Apr 2006 Location: Québec	Ayre V3 proto topology for preamp? Hi Guys or Mr. Hansen, is it possible to built a line preamp with the topology of Ayre V3 proto if i replace all mosfet with Jfets? Thank You! Maxpou

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20th March 2008, 04:51 PM	#3
maxpou diyAudio Member Join Date: Apr 2006 Location: Québec	Hi Guys, i test the circuit but i have a problem with my dc offset. I adjust with my R8 and R9 for 0Vdc at the output without signal but i input signal my dc drift at output. Why? thank you! Maxpou

20th March 2008, 07:06 PM	#5
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	In principle, you can use the amp's topology to create a preamp, but I don't see that you're following the V3 topology--at least as I remember it. If I have time, I'll dredge up the schematic and see if I'm right. You're putting a signal in the Source of Q3 & Q4 and taking it off the Gate? There are several oddities about your schematic. Grey

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