MODEL 47A DUAL INTERFACE
M47A
Two independent interfaces in one rack unit, each taking a two-channel partyline to two four-wire circuits. It works with RTS two-channel and Clear-Com single-channel partyline, and runs from the mains.
- Two partylines, four hybrids
- Nulls itself in under ten seconds a channel
- Powers the partyline: 30 V on both channels
- Partyline connectors on the front and the back
- Partyline interfaces
- 2, each of 2 channels
- Four-wire
- 4 inputs and 4 outputs, 2 of each for every interface
- Works with
- Single and two-channel partyline, such as RTS and Clear-Com
- Partyline power
- 30 V DC, 315 mA maximum, from each of 4 sources
- Partyline level
- −10 or −14 dBu, selectable
- Four-wire level
- 0, +4, +6 or +8 dBu, selectable
- Frequency response
- 100 Hz to 8 kHz, ±2 dB
- Meters
- 8, of 5 segments
- Nulling
- Automatic, at the press of a button; settings kept when the power is off
- Hybrid
- Three-section analogue, for resistive, inductive and capacitive loads
- Line impedance
- 120 to 350 Ω
- Cable length
- Up to 3,500 feet (about 1,070 m), typical
- Trans-hybrid loss
- More than 40 dB, typical at 800 Hz
- Partyline
- 3-pin male XLR
- Four-wire in
- 3-pin female XLR
- Four-wire out
- 3-pin male XLR
- Remote control
- 10-pin header: null each interface, and microphone kill
- Mains
- IEC inlet
- Rack height
- 1U, 19-inch
- Dimensions
- 483 × 44 × 213 mm (W × H × D)
- Weight
- 2.1 kg
- Mains
- 100 to 240 V AC, 60 W maximum
