Behringer MX9000 Start-Up, A-channel setting up procedure, Desk/tape setting up procedures

13. START-UP

13.1 A-channel setting up procedure

13.1.1 Selecting inputs
MICROPHONE:	MIC/LINE switch (S1) UP,PAD switch (S1a) UP,	FLIP switch (S3) UP
LINE:	MIC/LINE switch DOWN,	FLIP switch UP
TAPE:		FLIP switch DOWN

13.1.2 Initializing channel for gain-setting

1)Set GAIN (P2) and all aux sends (P12,13,14 and 15) to OFF (fully counterclockwise).

2)EQ switch (S10) UP (off).

3)LOW CUT switch (S11) ON for microphones, OFF for signals with desired low frequency content.

4)CHANNEL MODE set to PFL (S95 UP).

5)Channel PFL/SOLO (S26) switch UP (L26 off).

6)Check that main PFL/SOLO LED (L95) is not lit.

7)Channel PFL/SOLO switch (S26) DOWN (L26 and L95 should light).

13.1.3 Auditioning a signal

1)Make a typical noise, or roll the tape. The -20 dB light should flicker, showing that a signal is present. There should also be some activity at the MAIN MIX bargraph meters, indicating the SOLOed level.

2)For LINE INPUTS: Adjust GAIN control (P2) until transient peaks are regularly hitting 0 dB.

3)For MIC INPUTS: If your meters are reading 0 dB although the GAIN control is completely turned counterclockwise, push the PAD switch (S1a) to lower the input signal by 20 dB before you continue the gain adjustment.

4)TAPE inputs do not pass through the GAIN pot (P2). This is why it is important to match the operating level of the desk (-10 dBV or +4 dBu) to that of your machine. If the signal is low (due to incorrect operating level setting or too low a level having been recorded to tape), try the -10 dBV setting. If too high, try +4 dBu. If neither gives a good level, try patching the tape track output into a line input and repeat steps 13.1.1 and 13.1.2.

5)lf EQ is used, repeat steps 13.1.1 & 13.1.2.

6)If an insert is used to patch in a compressor, gate, EQ, etc, use any outboard processor’s BYPASS or EFFECT OFF switch to A/B monitor the effect. Adjust the processor’s output level so that effected and bypassed signals are level matched.

7)Channel PFL/SOLO switch (S26) UP. Move onto next channel.

13.2 Desk/tape setting up procedures

13.2.1Desk normalization

All board settings should be set to the normal default condition before or after every session. Usually faders are set to zero (minus infinity), EQs set flat and switched out, trimpots and channel aux sends turned fully anticlockwise etc. The natural initial setting for some pots, e.g. master aux sends, is unity gain. However, some settings, such as selecting PRE or POST for channel aux sends and whether TAPE or MIC/LINE is flipped onto B-channel etc. will depend on the operating environment, whether in a MIDI or A/V suite, 24-track studio or live venue, or even just on the engineer’s preferred way of working. Ultimately the object of the excercise is:

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