Comrex Mix-Minus-Bridge

KEY FIGURES:

• The MMB takes one mix minus feed from the console, and creates 6 feeds for remote or telephone use.
• MMB's can be stacked for 12, 18 or more feeds.
• Separate level controls are provided for each input to the bridge.
• IFB (interruptible fold-back) allows cues to be sent to individuals or the whole group.
• IFB can be set for "ducking" or complete muting of the program audio.

SPECIFICATIONS:

Connections

• Inputs 1-6: RJ-45 jack, wired according to CAT5 pinout for three pairs
• Outputs 1-6: RJ-45 jack, wired according to CAT5 pinout for three pairs
• Auxiliary Input: 3-pin XLR female
• IFB In: 3-pin XLR female
• Remote Control: DB25 female

Audio Inputs

• 1-3 In, 4-6 In and Aux In: 50K ohm balanced bridging, -10 to +10 dBu, adjustable (unity gain as supplied)
• IFB Input:
  • Mic Level: 15K balanced bridging, -35 to -70 dBu adjustable (-50 as supplied)
  • Line Level: 100K balanced bridging, -10 to +10 dBu adjustable (unity as supplied)

Audio Output

• 1-3 Out and 4-6 Out: Balanced line level, for 600 ohm or greater load, +4 dBu as supplied, +23 dBu maximum

Remote Control

• [6] Channel Off pins to remove each channel from the mix remotely (27 mA DC each pin)
• [6] IFB pins to talk to each channel individually (27 mA DC each pin)
• [1] Master IFB to talk to all channels (144 mA total)
• [12] Common ground pins
• Remote control is by an external contact closure or open collector pulldown on a 5 VDC relay

Power & Physical

• Power: 100 - 260 VAC, 50/60 Hz, IEC-320 connector, automatically switched
• Size: 19" W x 8" D x 1.75" H (48 cm x 20 cm x 4.5 cm)
• Weight: 4 lbs 8 oz (2 kg)