What is a Servo Sub?

[ptalar]

I am not familiar with servo subs. How are they different from other types of subs?

Phil

 

[rumble]

I believe a servo sub is a sub that has a feedback mechanism(the servo) that measures the movement of the speaker. The sub then can make a comparison between the desired output and the measured output and make adjustments to obtain the desired output. Properly implemented a servo sub should sound pretty good.

 

[Rob Babcock]

To expand upon that, a good servo sub utilizes an accellerometer that measures the cones movement. A servo ciruit then compares the actual movement to the input waveform and adjusts accordingly.

 

[ptalar]

Thank You very much for the explanation.