Specifications
ATI Audio Inc.   ■   Tel: 856-626-3480    ■   Fax: 856-504-0220   ■   sales@atiaudio.com    ■    www. 
audio.com 
CUE/ MONITOR HEADPHONE LEVEL 
The CUE/MONITOR level adjust trimmer on the MX101 (R74) is factory set for a 
comfortable listening level at a director’s cue input level of -10dBu (.25Vrms) but 
can be adjusted as required. 
MOUNTING 
You may rack mount one, two, or three units across in a standard EIA 19" rack 
requiring only 1-3/4" of vertical space. Rack Mount Shelf Assembly P/N 21075-
501 mounts one, two or three units. Use 1/3 RU Filler Panels, P/N 21097-501, to 
fill any unused space on the 21075-501 Rack Shelf. 
Single desk mounting kits consist of a pair of angled base plates that mount un-
der the lower front and rear cover screws of a single unit to raise and to tilt it for 
easy use. In addition, one or more sets of vertical stacking plates, mounting to 
the upper front and rear cover screws of the bottom unit, allow multiple units to 
be stacked. Several units can be desk mounted side by side and even stacked 
side-by-side using horizontal joiner kits together with mounting base and stacker 
kits. P/N 20617-501 is the angled base kit. P/N 20617-502 is the base plus one 
stacker kit (two high). P/N 20617-503 is the base plus two stackers (three high). 
P/N 20617- 504 is the stacker kit by itself and P/N 20617-505 is a horizontal join-
er kit. 
Detailed instructions for  mounting the protection  plates and battery pack slides 
are included with the PROK-1 and ABAG-1 if they have not been pre-assembled 
to the mixer. 
AUDIO CONNECTIONS 
XLR type inputs and outputs are wired with pin 2 as HI and pin 3 as LOW. Pin 1 
of all input connectors is grounded and is the cable shield and DC return connec-
tion for phantom microphone power. Pin 1 of the output connector is grounded. 
Active balanced outputs require a reference ground connection to the receiving 
device for proper operation. This ground can be provided by the rack frame or a 
studio  buss  connection  but  is  preferably  carried  through  by  the  output  cable 
shield. 
POWER CONNECTIONS 
Hum and noise performance of the XP100 can be degraded by poor DC ground 
connections between it and the MX100. Use of the recommended rack and desk 
mounting  kits will assure  a good  ground  connection between units  by  firmly 










