Servo-power?

KCF
KCF Posts: 58
edited December 2004 in Electronics
Can anyone ID the function / role of Servos in an amplifier application? Been looking to no avail. Just wondering what the li'l buggers actually do..

Thx,

K.
Post edited by KCF on

Comments

  • sowen010599
    sowen010599 Posts: 343
    edited December 2004
    Servo controlled usually implies the use of an accelerometer which is attached to the cone of a speaker (a subwoofer for example) which sends information to a controller regarding where the cone is as it travels back and forth producing sound. The controller compares what the cone is actually doing to what it "thinks" the cone "should" be doing, and adjusts output to the amplifier accordingly. Some, instead of using an accelerometer, measure the feedback created by induction as the coil moves back and forth, serving the same purpose.

    By watching the actual motion of the cone, and controlling it directly, distortion is supposed to be diminished.

    Some what say that a servo controlled speaker sounds more mechanical than one that is not.
    Go BIG or go home!
  • KCF
    KCF Posts: 58
    edited December 2004
    hmmm.. so the servo is actually IN the speaker? Talking to the amplifier..?
    My amp, (older Onkyo Integra) actually carries the designation "Servo-operation" and "super-servo"- so this relates to the speaker operation or the amplifier circuitry, or both? Sorry to be slow here, new concepts is all..
    Thx,
    K.
  • PolkThug
    PolkThug Posts: 7,532
    edited December 2004
    Here is the servo from my RC car. The round disk would have an arm on it that connects to my steering linkage and turns the car left or right. Inside the servo is just a motor and gears.
  • sowen010599
    sowen010599 Posts: 343
    edited December 2004
    What you probably have on your Oink is more/less distortion detection. It is not "servo" in the sense that say..... Velodyne HGS, or DD subs are. And certainly not like the one pictured! :rolleyes: :p
    Go BIG or go home!
  • KCF
    KCF Posts: 58
    edited December 2004
    ok, interesting, thanks..

    K.