KLING & FREITAG K&F Line 212-9 - Manual (Page 20)

User's Manual LINE 212-6 / LINE 212-9
KLING & FREITAG GMBH ©2003 - 2005 Version 4.1, 23.03.2006 Page 20 of 37
9.1 Operations with Additional Bass Systems via C2
With the K&F bass systems, it is no problem to expand the low frequency range with
additional bass systems. The C2 with specific plug-in system cards offers a 2-way ste-
reo crossover to separate the transmitted signals into frequency bands for the Line
212 system and for the connected subwoofer systems. It adjusts the delay times and
phases of the Line 212 system and the subwoofers. Because of this, an optimal combi-
nation of the Line 212 systems and all K&F bass systems is made possible. In doing so,
the bass system B10 plays a special role. More information in the following section.
When operating using additional bass systems, it is, however, very important that
when adjusting the power amplifier, the levels of the tops and the bass systems are
matching. This adjustment is done by the sound engineer with the sub gain control of
the C2 Controller.
9.1.1 Line 212 via C2 and Bass B10 via C10 Controller
When used parallel to the Line 212 System, the subwoofer system ACCESS B10, con-
trolled by the K&F Controller ACCESS C10, provides an ideal bass supplement.
The C 10 Controller is equipped with configuration switches for various configurations
and uses. A special electronic circuit frees up reserves from the B10 for the sub-low
range. Compared to the possible use with a C2 Controller, the operations with a C10
Controller provide increased bass performance.
9.1.2 Line 212 and Bass B10 via C2 in 2-Way Active Mode
When operating in this mode, the ‘Full-range’ switch on the C2 Controller should not
be pressed, the corresponding ‘Full-range’ LED is not lit!
In the 2-way active mode, the Line 212 is relieved of the high-energy bass signals and
can, therefore, produce a significantly higher sound pressure level. With this, the
number of necessary bass speakers to reproduce the correct sound level relationship is
increased.
The C2-Controller is configured for 2-way active mode in the following way:
If 2 or 3 Line 212 systems are mounted on top of 2 stacked B10 bass systems, the
gain of the power amplifier for the Line 212 should equal the gain of the bass ampli-
fier in stereo or dual mono mode (with level controls in maximum position).
If only one top is stacked on one bass system B10, then the gain of the bass system's
power amplifier should be increased by approx. 4-5 dB.