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Zu Omen Defs and Ice Amps?

Anyone have the opportunity to audition a pair of Zu Omen Definitions and a Class D or Ice Amp? The Zu's obviously don't need a lot of power so I'm thinking one of these newer digital amps might be a good fit. If so, please share the make/model of amp and your impressions. So far, I'm considering the King Rex, Trends, Dayton, and Topping amps but I'm sure I've left a few out that might be contenders. Thanks in advance.
texas42

Showing 2 responses by magfan

magfan
1,583 posts
 
If you are worried about 'excess damping factor', toss a power resistor in series with the speaker. That'll lower the damping factor! And 'simulate' a current source amp, using SS. Carver did it and so did Pass (experimentally)

The Zu enclosure / driver combo is probably designed to be critically damped, with a Q of about .71 This may not react well to hi damping factor amps.
The lower DF of tubes makes it sound.....right......

PS: The inductor in my panels has a DCR of 0.4ohms. An inductor of .08 ohms would be pretty small.
magfan
1,583 posts
 
The total resistivity of the woofer panel / inductor is over 4 ohms....The ICE amp I use will yield a pretty high DF.

I'd be careful changing inductor Resistance since it will cause a change in driver balance and effect crossover point.

My DIY design is within 5% of the original inductor, aircore and 14ga. wire....Therefore NO current limiting and NO saturation.
The stock coil? 16ga. iron core......
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