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Playing the devil's advocate

Howdy

You said "The skillful use of a servo sensor as velodyne does to continuously control the position of the voice coil is an excellent one. Here's one area where the principle of negative feedback is beyond dispute by anyone."

I've seen servo's bass drivers reacting to the room (e.g. when someone opens or closes a door or when your hand gets too close to the cone.)

This is not a good idea IMO. We are used to the room and we expect to hear the room, if say a piano were in the room. Having the speaker flatten the room response gives an artificial and to my and other friend's ears a flat uninvolving sound.

If the servo just reacted to the speaker and not to the room I believe is would sound better.

-Ted

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