Antex Electronics DMX-88 USB Recording Mixer - Manual (Page 6)

DMX-88 USB Mixer User Manual
6
Rear Panel Connections
1 2 3 4 5 6 7 8
USB
INPUTS
90-240VAC
50-60Hz 25W
ANTEX ELECTRONICS UN2493-3
MON 1
MON 2
HP
PA
1 0
Inputs 1-8: These are balanced inputs on female XLR connectors and will accept dynamic microphones, condenser microphones and
line level equipment such as video conferencing systems. Each input can be individually configured as line level or microphone level,
with 48 volt phantom power on or off. Microphone setting boosts the gain by 46dB. Phantom power will be disabled if line level is
selected, as phantom power is only intended for use with condenser microphones and may damage line level equipment. Phantom
power is not used with dynamic microphones, but will normally not damage them if turned on. All settings are controlled with the
Antex Mixer Program running on the host computer.
Pin 1 on the XLR connector is ground, pin 2 is hot and pin 3 is cold. To connect unbalanced equipment, a commercial male XLR to
male RCA audio cable can be used. Pin 3 is connected to the outer shell of the RCA jack and pin 2 is connected to the center pin of the
RCA jack. Pin 1 may or may not be connected to pin 3, depending on the type of cable used. A coaxial cable will usually have pins 1
and 3 connected to the shield. A shielded twisted pair will generally connect the shield to pin 1 only. Unbalanced connections are
more prone to pick-up of unwanted hum, so keeping the cable length to less than about 6 feet or 2 meters is recommended.
Mon 1 & Mon 2: These are balanced monitor outputs on female ¼” TRS connectors. Each one can be individually set to be a mix of
any combination of the 8 inputs. The mix is selected in the Antex Mixer Program running on the host computer. These outputs are
typically used to create a “mix minus” signal to feed to a video conferencing or teleconferencing system. The sleeve of the TRS
connector is ground, the ring is cold and the tip is hot. To connect to an unbalanced input, the ring should be connected to the sleeve
and used as the ground connection. The tip is then the signal connection. Using a ¼” TS plug will make this connection automatically.
Use caution when connecting this or any other device to the public telephone network. Do not put too loud a signal level into the
phone line. This could damage telephone equipment and/or be painfully loud to the person on the other end of the phone line.
PA: Public address output. This is a balanced output which can either be an analog mix of all input channels, or a mono mix of the
stereo playback output from the host computer, or a blend of the two. The blend is set by 2 slider controls in the Antex Mixer