Audio Developments AD144 - Manual (Page 15)

14
All inputs to, and outputs from AD144 are to be found on the connector panel.
Balanced inputs and outputs are on XLRs.
XLR Pin 1 Shield
Pin 2 Signal +
Pin 3 Signal -
In the case of an unbalanced line-input, pins 1 & 3 should be connected.
Main (3) to (6), auxiliary (7) to (10) and master (11) & (12) outputs are
transformer-balanced, and are at line-level.
When driving unbalanced loads, the mixer outputs may be safely unbalanced by
connecting pins 1 & 3. This will not lead to a loss of output level.
The electronically-balanced stereo-returns enter the mixer on two pairs of standard,
'A' type stereo jacks (16/17) and (18/19). The Auxiliary Return (L & R) enter the mixer
on a ‘A’ type stereo unbalanced jack (24)
Monitor 1 output is transformer-balanced and appears on two XLRs (13) and (14), left
and right.
Monitor 2 output is on an ‘A’ type stereo jack (15) for driving headphones (with a
capability of +15dBm into 600 ohms) or other monitor loads. This is duplicated
(unbalanced) on an 'A' type stereo jack on the monitor module.
BALANCED JACK
STEREO UNBALANCED JACK
Tip Signal + Tip Left Signal
Ring Signal - Ring Right Signal
Sleeve Shield Sleeve Shield
A two-position rocker switch (23) allows power to enter the mixer, which is confirmed
by the MIX ON LED (9) on the output module.
External powering of the mixer is via a 5-pin XLR (22).
XLR Pin 1 0V
Pin 2 +12V
Pin 3 -12V
Pin 4 NC
Pin 5 0V