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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?


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 :confused:

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