AVSL 170.880 CLP1200 - Manual (Page 4)

170.880UK User Manual
Mic/Line Input Section
Channel inputs and inserts are provided as XLR and/or 6.3mm jack sockets.
The connections for these inputs are assigned as follows.
1. MIC input Connect balanced microphone to this XLRF input. An unbalanced
microphone can be connected provided that +48V phantom power
not used. Wired as follows.
2. LINE input Connect balanced or unbalanced instrument or line level signals to
this 6.3mm TRS jack input. Wired as follows.
3. Channel INSERT Signal can be sent from channel to processor(s) and returned
back to the channel by connecting a TRS jack to 2 x mono jack
lead to this connector.
The channel inserts are post Low Cut and pre-EQ.
Wired as follows.
4. +48V Phantom Press in this switch to apply phantom power to the XLR input for condenser
microphones and D.I. boxes.
5. LOW CUT Press in this switch to apply a 75Hz 18dB/oct low frequency roll-off filter which
can help to reduce popping, rumble and handling noise from vocal microphones.
6. GAIN control This control trims the input signal to the optimum level for the channel strip.
Too low a signal level can mean that there is not enough output from the channel and
too high can result in overload and distortion in the output.
The adjacent SIG and CLIP LEDs will give an indication of the signal level.
Ideally, the Gain rotary control should be adjusted so that the green SIG LED is lit and
the loudest passages of the input signal (e.g. bass drum beats) will just momentarily
trigger the CLIP” LED. Anything longer than a momentary flicker of the CLIP LED means
that the Gain should be reduced. Using the PFL button further down the channel strip
gives a more detailed view of the channel level on the main VU LEDs.
Balanced Pin 1 = Ground Pin 2 = Signal + Pin 3 = Signal –
Unbalanced Pin 1 = Ground Pin 2 = Signal + Pin 3 = Ground
Balanced Tip = Signal + Ring = Signal – Sleeve = Ground
Unbalanced Tip = Signal + - Sleeve = Ground
TRS jack Tip = Send Ring = Return Sleeve = Ground
Left mono jack Tip = Send - Sleeve = Ground
Right mono jack Tip = Return - Sleeve = Ground