Architects Specifications
The Mixing Console shall be of a fully modular construction available in 32, 40, 48 and 56 input frames. The mixing console shall provide
a combination of between 20 mono and up to 7 stereo and 6 mono sends, depending on global switching. As standard, the console shall
be provided with 6 Triple Group Output modules and 1 double-width Master module. All frames will be supplied with a separate
CPS800 19 inch rack-mounting Power Supply. There shall be an optional VU Output Meterbridge for all sizes except the 32ch.
The Input Module shall have the following features; an electronically balanced low impedance input via an XLR socket with parallel con-
nection to a passive mic split output, continuously variable gain giving a sensitivity range of -2dBu to -70dBu (high gain range) and -20dBu
to +10dBu for high level inputs, switchable 48V phantom power, a variable 20-400Hz high-pass filter, phase reverse switch, by-pass-
able 4-band sweep equaliser 1kHz to 20kHz (HF) 450Hz to 12kHz (HMF), 60Hz-1.5kHz (LMF) and 12Hz to 350Hz (LF). The Q of the
two mid bands shall be variable from 0.5-3.0 and the HF and LF bands shall be switchable bell/shelving. All bands shall have a cut and
boost of 15dB (centre detented). 20 sends shall be provided via 6 single pots and 7 dual concentrics, with individual pre/post fader
switching (in pairs on dual concentrics) with internal selection to pre or post mute/EQ. The dual concentric sends act either as two
mono level controls or stereo level and pan, determined by global switching. Illuminated Solo and Mute switches shall control the main
signal path and allow the prefade signal to be monitored at all times. An 10 segment pre-EQ LED meter shall be provided, plus a sepa-
rate Peak LED to indicate internal levels within 6dB of clipping. Eight mute assign switches shall be fitted, with an additional Safe switch
for removing a channel from one of the eight mute groups. There shall be a link-selectable pre or post EQ insert point using separate
balanced send and return jacks. All connectors shall be integral with the main module.
The Output Module shall contain 3 identical output sections as follows; 100mm fader with 16-segment peak-reading LED meter, bal-
anced by-passable insert point, illuminated Mute switch and AFL switch, Group LR routing switches, Talkback switch and phase reverse.
An external line input shall be provided to allow console linking, with rotary level control and On switch. An AFL trim control shall be
provided with a range of +/-10dB. External inputs shall be connected via balanced XLRs; main outputs shall use electronically balanced
XLRs with a transformer option. A global mono/stereo mode switch allows the upper two output sections to be used as a stereo pair,
with automatic linked stereo AFL, and will switch the input send pots between mono and stereo operation. The AFL switches shall be
able to send a midi signal to an external BSS Varicurve system, to allow the remote selection of EQ pages on the BSS Remote.
The Master Module shall have a dual Grp L/R output section with identical facilities to those of the upper Output module, but not the
Grp LR routing switches. The Master module shall also contain a Talkback mic socket with routing to internal busses, FOH and external
output, variable frequency oscillator/pink noise generator, Solo Clear, Input Priority and Intercancel selection with PFL trim control,
stereo/mono engineers wedge fader, main/alternate wedge output selection, independent headphone socket and level control , 8 mute
group master switches and 2 x 16-segment LED L and R master meters.
A lamp dimmer control shall vary the brightness of three console mounted 4-pin XLR lamp sockets; one on each side cheek and one on
the master module.
The dimensions and specifications shall be as published elsewhere in this information. The console shall be the Soundcraft SM20.
Configuration Information
SM20 32 channel RW5422
SM20 40 channel RW5541
SM20 48 channel RW5542
SM20 56 channel RW5543
(Above consoles supplied with 1xCPS800 PSU)
SM20 40 ch Vu meterbridge RW5550
SM20 48 ch Vu meterbridge RW5551
SM20 56 ch Vu meterbridge RW5552
SM20 Mono Input Module RS2031
SM20 Output Module RS2032
SM20 Master Module RS2033
SM20 Blank Module PH1454-01
Spare CPS800 Power Supply RW8024
Spare User Manual ZM0226
Technical Manual ZM0227
Littlite 18 4pin XLR JB0155
