AVSL 953.020 Z44R - Manual (Page 5)

953.020UK User Manual
Connect microphones, DI boxes and other balanced low impedance audio inputs to the
MIC/LINE combo inputs using good quality XLR leads. Alternatively, connect high
impedance and line level signals to the combo inputs using 6.3mm jack leads. (+
additional rear jack input for MIC/LINE 1). If phantom power is to be used for condenser
mics, press “+48V” switch and connect using balanced XLR cables.
Connect stereo line level sources to the LINE 3 and LINE 4 channels via the Left + Right Jack or RCA
connections on the rear panel. These can be switched, offering a selection of 2 sources for each
channel.
If the internal DSP reverb effect is to be operated remotely, connect a latching foot
switch to the rear panel F/S jack. Alternatively, this can switch the feed from an external unit, which
should be connected via the FX LOOP. To do this, connect a jack lead from the SEND to the external
effect unit and its left & right outputs to RETURN L+R.
In an installation scenario, building regulations may require the sound system to be muted if the fire alarm is
triggered. The green MUTE contacts on the rear panel will kill all channels except MIC 1 if the contacts are
shorted. This can be patched in to the venue fire alarm panel to kill all music in the event of a fire, leaving the
main microphone active for emergency announcements.
Operation
1. MIC/LINE channels 1 and 2
 Turn all MIC level and LINE LEVEL controls to minimum (2, 5, 8 & 10)
 Set LO, MID and HI (20 & 23)controls to the centre position and turn FX down (19 & 22)
 Switch on the power on the right side of the front panel. (33)
 Check each microphone input, gradually increasing GAIN (4 & 7) until the red Peak LED flashes (3 & 6) and
then back off the GAIN until only the green Signal LED lights up
 Gradually turn up the OUT volume controls (13, 14, 15 & 16) part way
 Increase the MIC/LINE 1 and 2 LEVEL controls (2 & 5) to the desired level, taking care to avoid distortion or
feedback from the microphones.
 Adjust LO, MID and HI controls to set the desired bass, middle and treble content for each MIC/LINE input
 If effects are to be used, temporarily unplug the foot switch (if used) and increase the DEPTH control (28) on
the front panel. Gradually turn up the FX control(s) (19 22) for the relevant MIC channel(s) and adjust the
TIME (12) control to set the desired length of reverb effect. Plug the footswitch back in and use to switch the
effect in/out.
 For some microphones, it can be beneficial to “roll-off” the very low frequencies caused by handling and vibration
to the microphone body. If required, press in the Lo-cut Rumble Filter switch (18 & 21) on the microphone
channel to reduce this type of noise.
2. Stereo LINE channels 3 and 4
 For LINE 3 and 4 channels, check which pair of inputs the signal is plugged into - jack (A) or RCA (B) – and set
accordingly via the Source Select switches (24 & 26) on the front panel
 Press in all of the OUT line selectors (29, 30, 31 & 32)
 Set HI and LO controls (25 & 27) to the centre position
 Play the stereo line signal into the relevant channel and increase the LEVEL (8 & 10) control as required
 Adjust HI and LO controls to set the desired bass and treble content of the stereo line channels
3. Stereo OUTs 1 - 4
 Adjust the OUT volume controls (13, 14, 15 & 16) so that the red Peak LEDs do not light constantly
 Press out any line selectors (29, 30, 31 & 32) for any stereo inputs which are not required to be fed through
any output (MIC/LINE inputs are always fed to all outputs)