Servo controlled bass amplifier?

[troystg]

Hi All-

Does anyone know of a servo controlled bass amp on the market?

I have a Louis Erath servo controller and was thinking it would make a GREAT bass amp controller.


Any comments are welcome.

[Nasse]

I had my car examined last week and they had some kind of strong machine that vibrated the wheels when testing shock absorbers and all parts in the underside. I think the very powerful oscillation was in low bass octaves when the sweep got up. But dunno what kind of mechanism was used for this. No lack of power and xmax.

[Enzo]

Are we talking the sensors on the speakers thing? I recall Yamaha made some servo woofers a while back in the pro audio line. Is that it?

[troystg]

Hi Enzo-

Negative..

The controller compares the AMP input signal with the amplified signal going to the speaker and adjusts for any differences.

Speaker has a few requirements, but biggest benefit is size reduction and accurate reproduction of input signal.

[Nasse]

So this is like motion-feedback amp/loudspeaker but the sensor is something new? I remember seen only piezo mics and electret and dynamic mics used used for "feedback"

[troystg]

Hi Nasse-

This is a servo controller or "electronic suspension" as Mr. Erath calls it.

The servo loop is contained in the controller module and only speaker leads go to the driver.

The "specifics" of the driver are accounted for in the controller.

What it does is give me FLAT bass down to 20Hz out of my pair of 15" woofers each in a 1.25 cubic foot enclosure with my B&W 805 speakers sitting on top.

I am just curious to see if it could be adapted to a musical instrument also...


I think they would work GREAT as a bass rig..