Aux Sends; Direct Output - SoundCraft MH3 User Manual

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Mono Input Module Mono Input Module Mono Input Module Mono Input Module Mono Input Module
Mono inputs are modular in blocks of 8 channels, and feature an integral rear connector panel.
Pre-Amp
The module's pre-amp features a high headroom and outstanding CMRR performance. The XLR
input can handle signals up to +26dBu, with a gain range of +15dBu to +60dBu (1) and a
20dB gain change switch (2). A Peak LED (3) indicates internal signal levels in excess of
+18dBu. This monitors both the pre-amp output and the EQ section output. Polarity Reverse
(4) and Phantom Power switching (5) is provided, with both front (6) and rear panel indication
of phantom power status. Note: the 48V LEDs do NOT auto sense the presence of external
phantom power, as on the MH4.
Balanced Insert Point
Separate jacks provide a pre-EQ balanced send and return, at a nominal level of 0dBu. See the
rear panel connectors.
EQ and HI-PASS Filter
This new design retains the traditional Soundcraft response, but incorporates steeper slopes on
the HF stage focussing the control where you want it, and some carefully tailored overshoot on
the LF band, which automatically controls the muddy lower-mid frequencies when boosting
lows.
The high-pass filter (7) is variable from 30Hz - 400Hz with bypass (8) if required. The EQ
section may be bypassed by releasing the EQ switch (9).
The EQ section is four band, with shelving sweep high and low frequency sections, and fully
parametric high-mid and low-mid bands. The frequency ranges are 30Hz-500Hz (LF)(10), 75Hz-
1.3kHz (Low Mid)(11), 750Hz-13kHz (High Mid)(12), and 1.2kHz-20kHz (HF)(13), with +/-
15dB of cut or boost available at any frequency. The Q is variable on the two mid bands from
0.5 to 3.

Aux Sends

There are 12 Aux sends (14), which can be used either as FX sends in FOH use, or monitor
mixes for monitoring. Aux 1 & 2 and 3 & 4 can be switched to stereo pairs for in-ear sends,
using the adjacent colour-coded STE switches (15). Each send has 5dB of gain at maximum.
The Auxes can be switched Pre- or Post-fader by the adjacent PRE switches (16), which are in
pairs for the first 8 sends, and as one group for Aux 9-12. The default Pre-fade signal for all
Auxes is pre-EQ but can be changed to post-EQ via internal links (both feeds follow the channel
mute).
Subgroup Routing
In addition to the 12 Aux sends, 8 busses are provided for conventional subgrouping. Routing
to these is via 8 individual routing switches (17). The PAN to Groups switch (18) allows any
odd/even pair of group busses to follow the channel pan pot as a stereo pair.

Direct Output

A direct output on balanced 1/4" jack is available from the channel, see the rear connector
panel. The source is controlled by the DIR switch (19), which switches the direct output from
pre-EQ to post-fade when the switch is pressed in. In addition, there are internal solder links to
alter the signal feeds in both of the switch positions, as follows:
DIR switch not pressed - pre-EQ (default) OR pre-filter
DIR switch pressed - post-fade (default) OR post-EQ
Preliminary Issue
MH3 User Guide