Mono Input Module for
V700 Stem Mixing Consoles
The M766 is a stem mixing mono input module for stereo consoles. The elliptic EQ is used to reduce the base width at low frequencies and improve the mono compatibility.The module has two independent mono line inputs and can also be used as mono subgroup master.
The module has two electronically balanced inputs that can process input levels of + 30 dBu. The input selection takes place by a lever switch. The selected input feeds the input gain control with a standard control range of +/- 10 dB. The gain control has a precisely calibrated 0 dB center detent. Line input 2 can be connected to one of the 6 sub groups by internal jumpers alternatively.
The balanced and buffered insert point is located post input gain and pre fader. The insert output is always available on the connector panel and the insert input is switch into the signal chain by the INS switch. Insert input and output are electronically balanced and can process levels of + 30 dBu.
Fader, PFL, Solo, Cut, Meter
The fader is a conductive plastic audio fader with 100 mm stroke that drives an ultra low noise, wide band buffer amplifier that compensates the insertion loss of 10 dB. 12 dB versions are also available.
The CUT circuit that mutes the entire channel is post fader, post buffer amplifier.
The PFL system only affects the monitor system and can be used during the mix. The fader input signal is routed to the PFL mix bus.
The solo system operates independent of PFL as Solo in Place. The SAFE switch allows to prevent Solo for the channel when pressed. All channels that are not either in Solo state or in Safe mode are muted if Solo is active.
The integrated peak/present level meter reads the fader input level. The display with 4 LED's covers the range from - 20 dB to + 20 dB.
There are three mono aux send that can be switched pre or post fader. The two stereo cue sends, each with a level and pan control, can also be switched pre or post fader. In the IN2 position of the 3-position lever switches, the line input that is not selected as main input signal can drive the cue sends. This feature makes possible to use the module for recording and monitoring at a time. In addition, the input signal can drive the group routing using CUE2 while the main channel is used as mono subgroup master.
The channel output is electronically balanced and can process levels up to + 30 dBu. The CH-OUT switch selects the output of the group bus amp instead of the fader output when pressed.
The fader output feeds the pan pot. The pan pot is a standard mono to stereo pan with 3 dB center attenuation. The output of the pan pot drives the mix and group routing.
Mix and Group Routing
The MIX switch routs the pan pot outputs into the mix bus rails. The 6 groups are selected by 3 switches in stereo pairs. The additional switch GROUP CUE2 splits the routing and assigns the groups to the output of the CUE2 send.
Group Bus Amp
All stem mixing input modules include a mono bus amp for one of the 6 groups of the mixing system. The bus rails are assigned on the wiring pcb in the console frame. At least 6 input modules must be installed to use all groups. The output of the group bus amp drives group return busses in the console frame. All groups are available in all inputs. This principle makes possible to assign any input module to any group, independent of the frame slot where the particular module is installed. In addition, one group can be assigned to several channels in parallel.
If the M766 Stem Mixing mono input module is used in combination with a surround master module, the surround channels C, SL, SR, and LFE are not driven from the M766. However, the left channel drives the front left surround master bus and the right channel drives the front right surround master bus. If the master modules operates in MODE STEREO, the module is fully functional.
The M766 is a 6U V700 module with 120 mm depth that can be used with standard and custom build stem mixing frames.