19
Input Channel Section
(
Main Out Switches
Determine where the post-fader channel signal will be
sent. To assign the channel signal to the stereo bus
engage the [ST] switch and use the [PAN]
&
or [BAL]
*
control to adjust the stereo image. To send the signal
to the mono bus engage the [MONO] switch. In all cases
the channel fader determines the signal level.
On mono modules it is also possible to send the channel
signal to the stereo and mono buses in LCR mode, using
the mono bus as the center signal. To do this engage the
[LCR] switch and use the [CSR] control
&
to adjusts the
Center-Side Ratio to achieve the desired LCR balance.
º
Channel [ON] Switch
Turns the input channel on or off. When off the channel
signal is not sent to the STEREO AUX, GROUP AUX,
STEREO or MONO buses.
¡
Level Meter
Displays the channels post-EQ pre-fader signal level.
The [PEAK] indicator will light when the signal level
exceeds 17 dB above nominal (0 dB) level.
NOTE
The [PEAK] indicator responds to the pre-EQ and pre-insert
signal level as well as to the post-EQ pre-fader level.
LCR vs. Mono Operation
When the [LCR] switch is engaged the stereo and mono (center) buses become linked for LCR operation and the
[ST] and [MONO] switches cannot be engaged. On the other hand, when the [LCR] switch is not engaged the [ST]
and [MONO] switches can be engaged simultaneously. In either case the channel signal is sent to both the stereo and
mono buses. The difference between these two setups is described below.
For example, mono sources are normally positioned in the stereo sound field or swept from one side to the other by
adjusting the panning to the stereo bus. This works fine when the distance between the left and right speakers is
relatively small, but problems arise in venues where the speakers are further apart. In fact, in even modest venues if
a channel is panned fully left, for example, audience members sitting on the right side of the house will hear very
little of that signal, if any. In such cases it is useful to provide a center channel, the output level of which will be
adjusted to reinforce the stereo image and provide more effective coverage. Manually adjusting the levels and
panning of the stereo and mono buses to achieve this effect can be extremely difficult, and that’s where the LCR
output mode with CSR (Center-Side Ratio) control comes in handy. With this system and an LCR speaker setup it is
possible to produce natural stereo positioning and smooth panning in large venues with a single control. The [PAN]
control adjusts panning as always, while the [CSR] control determines how the center channel responds to [PAN]
control operation as shown in the diagrams above. The more the [CSR] control is rotated clockwise, the higher the
center channel level as the [PAN] control approaches center position.
Outer: CSR
Inner: PAN
L Bus Level
R Bus Level
MONO(C) Bus Level
CSR Control: LR
CSR Control: Center
CSR Control: CSR
LR
CSR
LR
CSR
LR
CSR
Summary of Contents for PM 5000 Series
Page 1: ...Owner s Manual E ...
