KLING & FREITAG K&F CA 106 - Manual (Page 16)

User's Manual CA 106
KLING & FREITAG GMBH ©1995 - 2006 Version 5.1, 09.11.2006 Page 16 of 26
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 function.
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 amplifier actually provides more
power than the speakers can handle. The amplifier’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.