Line Array with small full ranges - suspension nonlinearity?

[capslock]

About those Vifa TC9 or whatever line arrays, the individual drivers will barely move. Isn't this where suspension nonlinearity, especially mechanical hysteresis will begin to matter?

Compared to a typical 5 - 7 in driver, there is an awful lot of rubber surround and spider to me moved -- by a very small signal!

 

[jjasniew]

>the individual drivers will barely move.

I would think this is the ideal situation, regarding suspension nonlinearity - which I would think is something one starts to encounter for large cone movements.

 

[Halair]

Large number of drivers, moving within their comfort zone = good.
Large number of drivers, a few is not totally in line with the rest = defects will be attenuated by the natural midband SPL boost a line array provide.

 

[TNT]

Rvis fellow is worried about the really small movements.

 

[scottjoplin]

The only way to find out is to measure

 

[norman bates]

Hmmmmmm.

I think bass modulation will get the 3" moving.

I ran 9 x 4".
Never heard a problem at low volumes.

 

[capslock]

Rvis fellow is worried about the really small movements.

Who the hell is Rvis?

 

[capslock]

Thanks for your input! I agree that small movement is ideal for motor / magnetic circuit derived problems. However, there is no small amount of mechanical hysteresis and related nonlinearity in the soft parts of the driver. I am particularly worried about this when there is no feedback mechanism to attenuate or sufficient excursion to break up low-level nonlinearity.

Allowing sufficient LF might actually a good idea to resolve this issue!

 

[TNT]

Who the hell is Rvis?

Sorry - cant figure it out myself :-D

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