User manual SOUNDCRAFT MH4

[. . . ] USER GUIDE Harman International Industries Limited. , 2003. All rights reserved Parts of the design of this product may be protected by worldwide patents. ZM0296 Issue 2 Soundcraft is a trading division of Harman International Industries Ltd. Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor. [. . . ] The MUTE switch can be toggled if Preview mode is enabled on the console, to edit a mute group or scene, and will not affect the audio. SAFE/PREV LED The SAFE/PREV LED is used to indicate the Mute safe status of the console or Preview mute status, if the console is in preview mode. The group/aux is toggled in or out of safe mode using the MUTE switch, after first engaging EDIT SAFES mode on the master cpu panel. Preview status is indicated by flashing illumination, upon entering Preview mode from the master cpu panel, if the Mute is present in the previewed mute group or scene. 4 - 16 AFL The AFL switch feeds the post fade output signal to the stereo AFL busses. The AFL signal is actually derived from the Output Pan control -this allows a stereo AFL signal to be generated which is likely to be appropriate to the application. EG: If using as stereo auxes, the pan pots can be turned hard left and right on adjacent outputs and this will generate a stereo AFL, if both adjacent AFL buttons are pressed. Adjacent AFL switches can be linked so that pressing one will automatically select both; to do this, press and hold the first AFL switch, then press the second. To un-link the switches, repeat the process. If using separate mono auxes, the pan pots can be centred to give mono image from each AFL button. If a pair of adjacent AFL switches have been linked, they act as one switch as far as Autocancel is concerned. If INPUT PRIORITY is enabled on the master fader panel then any active input SOLOs will replace the output AFL signal, and the output will not be heard until the inputs are un-SOLOed. Pressing an AFL switch will also send a MIDI message to an attached BSS varicurve or dbx DriveRack system, instructing them to select the appropriate channel of EQ for control on the BSS/dbx remote unit. Routing To The Mix The Aux to mix MIX and C switches route the post-fade, post mute output signal to the stereo Mix L, R and C busses respectively. The feed to the stereo mix bus is taken via the PAN control which has a 3dB centre drop. The PAN control also affects the AFL image, as described above. TB/OSC The latching TB/OSC switch feeds the signal from the talkback mic or oscillator (located on the master module) to the Aux output and is injected onto the bus with no dimming of the Aux signal. The TALK or OSCILLATOR INT buttons on the master module must also be switched on to enable this operation. Meters The Group/Aux output level is metered by one of 8 VU meters in the overbridge. Three bank select switches on the master module determine whether the 8 Mono/Stereo Aux/Groups, 8 Auxes or the 8 Matrix outputs are fed to the meters. Matrix Sends The matrix send pots feed the odd-numbered Aux output signal (left-hand column of knobs) or the even-numbered Aux output (right-hand column of knobs) to the Matrix output M1-8. The PRE switch sources this feed pre the AUX master fader. The pre-fade feed is post-insert. 4 - 17 Matrix Section Each 2-wy Aux-only Output module contains two of the eight Matrix Output sections, together with sends from each of the two Aux outputs on the module, into the 8 matrix outputs. [. . . ] A bank of 8 medium-size VU meters are switched to meter one of three banks of sources, using a bank of three MTR SRCE switches located on the upper right of the Alt Master module: The GRP/STE AUX switch selects the Group 1-8 or AUX 9/10 - 15/16 signals (depending on the Global Mode of each pair) to be fed to the 8 meters. The AUX switch selects the Aux 1-8 signals to be fed to the 8 meters. The MTX switch selects the Matrix 1-8 signals to be fed to the 8 meters. The three switches are interlocked. Illumination All the VU meters are back-illuminated using LEDs, which eliminates the inevitable periodic replacement necessary with filament bulbs. Recalibration The meters are factory set but, should any adjustment be necessary, the trim controls can be accessed as follows: 1. [. . . ]