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What is a "servo" sub and any advantages?

Hello--

I am considering a purchase of a used Infinity Servo Sub, but don't know what the advantages/disadvantages are of servos. It doesn't seem that Infinity has any in their new model lineup, I know of Paradigm's Servo 15. Should I be cautious about purchasing this?
salby6

Showing 1 response by bob_bundus

bob_bundus
1,834 posts
 
For the ultimate in sub's check out Tom Danley's ServoDrive ContraBass subwoofer system.
http://www.mindspring.com/~sdinc/pages/contra.html
Talk about slam & dyamics! This thing is definitely major-league! The woofers have no voicecoils per se; they incorporate a stepper servomotor into a dual linear driver combined with two passive radiators. The technology is also used in commercial theater applications. The ContraBass will absolutely rock your world!
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