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Old 18th April 2003, 02:06 PM   #1
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Default Zen driving high impedance loads

I was looking at using an actively crossed over system, and using a Zen to drive the high end, my question is, is the zen stable at driving a high impedance load such as a piezo tweeter?
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Old 18th April 2003, 05:10 PM   #2
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Default Should work okay

The tweeter will present a very reactive load. But the amp should be able to handle it.
One small issue is voltage swing. With regulated 42 volt rails the most you can swing is somewhere around +/- 20 volts. This should be plenty for a normal efficiency tweeter.
On this application the idle current could be brought down to the 1.3 amp level mentioned in the article. The current should be very low driving a piezo.
I thought my 15 ohm Lowthers were an easy load for the Zen V4. Using one as the top end in this application should show the Zen at its best.

George
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Old 18th April 2003, 08:23 PM   #3
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The Zen is probably the most stable amp you can make, and it loves high impedance loads.
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