Zen-biamping

ijomojo · 26th July 2005, 01:46 PM

Hello Everyone,

I carry with the thought of building a Zen-biamping version, driving two-way loudspeakers. Active crossover frequency is around 3000Hz. Since I will go unbalanced, I thought of a ZenV4 for the low-mid frequency range.

For the tweeter, I asume, no feedback would be the best choice, since power plays only a subordinate role in that range of frequency.
Any suggestions for the high freq range?

Thx,
Joseph

Nelson Pass · 26th July 2005, 06:47 PM

You might consider the F2 clone schematics which haveappeared on this forum.

ijomojo · 28th July 2005, 08:01 AM

Thank you for the suggestion Mr. Pass.

The topology of the firstwatt amps is indeed very interesting, but leads me to another (maybe stupid) question:
How could I match an active current source amp like the f2 clone to a gain 4dB lower than the zen4 (low-mid speakers are 94dB, tweeter is 98dB)? Measuring the input and output voltages across a dummy load doesn't make much sense here

26th July 2005, 01:46 PM	#1
ijomojo diyAudio Member Join Date: Jan 2005	Zen-biamping Hello Everyone, I carry with the thought of building a Zen-biamping version, driving two-way loudspeakers. Active crossover frequency is around 3000Hz. Since I will go unbalanced, I thought of a ZenV4 for the low-mid frequency range. For the tweeter, I asume, no feedback would be the best choice, since power plays only a subordinate role in that range of frequency. Any suggestions for the high freq range? Thx, Joseph

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26th July 2005, 06:47 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	You might consider the F2 clone schematics which haveappeared on this forum.

28th July 2005, 08:01 AM	#3
ijomojo diyAudio Member Join Date: Jan 2005	Thank you for the suggestion Mr. Pass. The topology of the firstwatt amps is indeed very interesting, but leads me to another (maybe stupid) question: How could I match an active current source amp like the f2 clone to a gain 4dB lower than the zen4 (low-mid speakers are 94dB, tweeter is 98dB)? Measuring the input and output voltages across a dummy load doesn't make much sense here

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