KLING & FREITAG K&F CA 1001 - Manual (Page 17)

User’s Manual CA 1001
KLING & FREITAG GMBH ©1995 - 2006 Version 3.0, 22.03.2006 Page 17 of 27
9.2 Operations with C2 Controller
By using carefully adjusted filters (EQ) on special system cards for the CA systems, the
C2 Controller optimises feedback prevention and the frequency response of the spea-
kers.
The controller provides optional bass boost in full-range mode, optimisation for cluster
operation (Top Low Cut switch), high boost and sub-mono functions.
The C2 Controller optimises the operating safety of the speakers and power amplifiers
by using special peak and RMS limiters in Sense Technology:
With other (universal) controllers, the gain of the selected power amplifiers
must be known. The limiter on the C2 Controller, on the other hand, uses a
special control circuit to determine the actual output voltage of the power
amplifiers. The limiter then reduces the input level only when the power am-
plifier actually provides more power than the speakers can handle. The ampli-
fier's gain and the position of the input level control for the power amplifiers
are insignificant for the limiter function of the C2 Controller.
C2- Power amplifier with
Controller input level control
Limiter
Measured value (output
voltage of the power amplifier)
Universal Power amplifier with
Controller input level control
Limiter
Fixed value, depending on the amplifier's gain and the
position of the input level control of the power amplifier.