Penultimate Zen ZETEX ZVP3310 P

PhilR · 4th July 2007, 12:36 AM

I've finally decided to build a zen V4, ordered all the transistors which have duly arrived, but the ZETEX ZVP3310 is a surface mount and I don't seem to be able to find the correct style in New Zealand.
The original article states:

In the case of Q4, the Zetex ZVP3310 performed the best among the parts tried. The IRF9510, 9610, and similar parts worked, but have higher capacitance, and thus higher distortion at the top end with these input impedances. This can be improved by lowering the values of R2 and R3. If you can accept a 10K input impedance, you could consider using these alternate P channel Mosfets.

Has anybody tried this, and with what success?

Thanks in advance

Phil

Nelson Pass · 4th July 2007, 05:01 PM

Well I've tried it. It works as described, which is well. Use
the non-IR versions of the 9610 or its variants for the lowest
distortion.

PhilR · 4th July 2007, 08:06 PM

Awesome, thanks for the quick reply. Can't wait to get started on this project but work keeps getting in the way.

Phil

4th July 2007, 12:36 AM	#1
PhilR diyAudio Member Join Date: Sep 2003 Location: Dunedin	Penultimate Zen ZETEX ZVP3310 P I've finally decided to build a zen V4, ordered all the transistors which have duly arrived, but the ZETEX ZVP3310 is a surface mount and I don't seem to be able to find the correct style in New Zealand. The original article states: In the case of Q4, the Zetex ZVP3310 performed the best among the parts tried. The IRF9510, 9610, and similar parts worked, but have higher capacitance, and thus higher distortion at the top end with these input impedances. This can be improved by lowering the values of R2 and R3. If you can accept a 10K input impedance, you could consider using these alternate P channel Mosfets. Has anybody tried this, and with what success? Thanks in advance Phil

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4th July 2007, 05:01 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Well I've tried it. It works as described, which is well. Use the non-IR versions of the 9610 or its variants for the lowest distortion.

4th July 2007, 08:06 PM	#3
PhilR diyAudio Member Join Date: Sep 2003 Location: Dunedin	Awesome, thanks for the quick reply. Can't wait to get started on this project but work keeps getting in the way. Phil

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