Panasonic Ramsa WR-S4412 - GENERAL; Features; Input Section

GENERAL
The RAMSA WR-S4400 Series Sound Reinforcement and
Recording Consoles have been designed and built based
on the same quality and technology of RAMSA’s high-end
professional mixing consoles. These consoles are available
in three different sizes: the 12-input WR-S4412, 16-input
WR-S4416 and 24-input WR-S4424.
Whether you are mixing sound for a band, school auditorium,
theater, A/V production studio, or night club, the RAMSA
WR-S4400 Series can enhance the quality of your mix.
FEATURE
Overall Input Section
e Each input channel includes an addressable AUX @ The input circuit of this module consists of switchable
control, which can be switched to feed either a mixing
buss or the input channel's Direct Out. This greatly
increases output capability, especially in cases where
an effect is dedicated to a single input source.
The AUX Direct Out function is also useful for feeding
the inputs of a Multi Track Recorder.
The distributed grounding system used in RAMSA
mixing consoles reduces hum, crosstalk, and other
sound-degrading characteristics to an absolute
minimum.
All channel inputs, Group Outputs, and L/R Master
Outputs are electronically balanced.
The Head ‘Amplifier has a continuously variable trim
range of 64 dB, enabling it to accept any Mic or Line
source with a nominal level between —60 dB and +4
dB. Proper setting of the input trim control optimizes
signal-to-noise ratio and allows approx. 22 dB of
headroom between —60 dB and —2 dB at the A-input.
(More than 18 dB between +4 dB and —2 dB)
The Low Noise Discrete Differential Amplifier on each
channel has a maximum input level of 24 dB.
Phantom Power (48V) is individually switchable on
each input channel. Its noiseless operation prevents
potentially damaging switching noise from reaching the
speakers, ;
A new high-precision long-stroke carbon fader has
been developed for the WR-S4400 Series mixers.
The frame is a very sturdy semi-monocoque design,
able to withstand the demands of transporting.
The width of each channel strip is only 29 mm,
the minimum possible while still accomodating XLR
connectors. The result is more channels in a smaller
frame, which improves portability.
dual universal Mic/Line input connectors. A switch
selects either the "A” input (XLR connector) or "B” input
'(TRS Phone Plug); both of which are electronically
balanced. Gain structuring of the head amplifier
permits the "A” input to accept any signal with a nominal
level between —60 cB and +4 dB (’A’ input), or —54 dB
and +10 dB ("B” input). Sensitivity is infinitely variable
by the Input Level Control.
Buss assign switches allow easy signal routing to the
4 Group Output Busses and the L-R Master Busses.
The Pan control “positions” the signal within the stereo
field by adjusting the relative level between signals
sent to the Left and Right Master Busses; and also for
odd/even panning between Groups 1/2, 3/4.
Phantom power (48 V) is switched on or off for each
individual channel("A” input only) by the 48 V Phantom
Power Switch.
Three-band equalization is provided on each input
channel.
High :
Mid :
Shelving + 15 dB, 12.5 KHz fixed
Peak/dip + 15 dB, 200 Hz-6.3 KHz
sweepable
Low: Shelving + 15 dB, 70 Hz fixed
There are 4 AUX busses per input channel. The AUX 1
and AUX 2 signal takeoff point is fixed either pre- or
post-fader, selectable by internal jumpers. AUX 3 and
AUX 4 are selectable pre- or post-fader by a front panel
switch on each channel. Internal jumpers located on
each circuit board permit selection of pre- or post-EQ.
NOTE:
JUMPER MODIFICATIONS MUST BE PERFORMED
BY AUTHORIZED SERVICE PERSONNEL.
The DIR Out switch routes the AUX 1 signal to either
the channel Direct Output, or to the AUX 1 mixing buss.
Each input channel has red and green LED level
indicators.
When the signal level to the Head Amplifier reaches a
level approx. 8 dB below nominal, the green lamp lights.
The red lamp turns on when the level is within 8 dB of
clipping.
PFL (pre-fader listen) is provided on all input channels.
This allows an individual channel or group of channels
to be monitored through the headphones or monitor
output.