KLING & FREITAG K&F Line 212-9 - Manual (Page 21)

User's Manual LINE 212-6 / LINE 212-9
KLING & FREITAG GMBH ©2003 - 2005 Version 4.1, 23.03.2006 Seite 21 von 37
9.1.3 Line 212 via C2 in Full-Range Mode and Bass B10 via C10
When operating in this mode, the ‘Full-range’ switch on the C2 Controller should be
pressed, the corresponding ‘Full-range’ LED is lit!
Because a large portion of the bass range in full range mode is covered by the Line
212, less bass systems are necessary than for 2-way active mode in order to produce a
balanced sound level ratio between the tops and the bass speakers. In this mode of
operations, the maximum possible top level is lower than for 2-way active mode. De-
pending on the music programme, it is, for example, recommendable to use one bass
system B10 for two or three Line 212 systems.
The recommended ratios between bass systems and Line 212 systems are intended to
be used as reference values. The correct ratio of the numbers of bass speakers and
mid/high speakers may vary with different configurations and applications. This re-
sults from the different coverage patterns of the bass and mid-high speakers. The
sound level of the stacked basses increases by max. +6dB when doubling the number
of speakers (+3dB efficiency plus 3dB by doubling the power amplifier level). The
loudness of the tops increases in a different manner because of the directivity. The
position of a bass speaker is also crucial for its actual sound level. A bass speaker,
which is on the floor, can be a few decibels louder than a flown bass system because
of the floor reflections. Because of this, a sound engineer must always fine-tune the
system using the level control of the C10 or the sub gain control of the C2 (not on
the mixing console!).
Operating instructions for the C10 Controller are in the user’s manual ‘ACCESS
SYSTEM’ and for the C2 Controller in the user’s manual ‘K&F Controller C2’.
Note