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Issue 2, September 2007 Model 46 User Guide
Page 28 Studio Technologies, Inc.
Specifications
General Audio:
Frequency Response: ±2 dB 100 Hz to 8 kHz
Distortion (THD+N): <0.5%, measured at 1 kHz,
4-wire input to 2-wire interface pin 2
Signal-to-Noise Ratio: >55 dB, measured at 1 kHz,
4-wire input to 2-wire interface pin 2
Connectors:
Inputs from 4-Wire: 3-pin female XLR-type
Outputs to 4-Wire: 3-pin male XLR-type
2-Wire Party-Line Intercom: 3-pin male XLR-type
Remote Control: 10-pin header, requires optional
10-pin ribbon connector assembly
AC Mains: 3-blade, IEC 320 C14-type (mates with
IEC 320 C13)
2-Wire Party-Line Intercom Interfaces: 2
Type: 2-channel party-line (PL), unbalanced
(pin 1 common; pin 2 DC with channel 1 audio;
pin 3 channel 2 audio)
Compatibility: single- and dual-channel intercom
systems such as from Telex®/RTS® and
Clear-Com®
Impedance, External Power Mode: >10 k ohms
Impedance, Internal Power Mode: 200 ohms
Nominal Level: –10 or –14 dBu, selectable
“Mic Kill” Signal: square wave, 24 kHz, ±1%
Internal Power Source: 30 volts DC nominal, 300
milliamperes maximum
Hybrids: 4, 2 per interface
Topology: 3-section analog circuitry compensates
for resistive, inductive, and capacitive 2-wire party-
line loads
Nulling Method: automatic upon user initiation,
processor implements digital control of analog cir-
cuitry; null settings stored in non-volatile memory
Nulling Line Impedance Range: 120-350 ohms
Nulling Cable Length Range: 0-3500 feet, typical
Trans-Hybrid Loss: >40 dB, typical at 800 Hz
4-Wire Inputs: 4, 2 per interface
Type: transformer-coupled, capacitor isolated
Impedance: 13 k ohms
Nominal Level: 0, +4, +6, or +8 dBu, selectable
in tandem with nominal output level
Maximum Level: +22 dBu
4-Wire Outputs: 4, 2 per interface
Type: transformer-coupled, capacitor isolated
Impedance: 50 ohms nominal
Nominal Level: 0, +4, +6, or +8 dBu, selectable
in tandem with nominal input level
Maximum Level: +20 dBu into 2 k ohms
Meters: 8
Function: displays level of 4-wire inputs and
outputs
Type: 5-segment LED, modified VU ballistics
Remote Control Inputs: 3
Type: optically coupled
Input: 3-32 volts DC; 2 milliamperes minimum for
operation, 20 milliamperes maximum
Functions: auto null interface 1, auto null interface
2, and “mic kill”
AC Mains Requirement: 100-240 volts
(–15/+10%), 50/60 Hz, 0.7 amperes maximum @
100 volts, 0.4 amperes maximum @ 240 volts
Dimensions (Overall):
19.0 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
8.5 inches deep (21.6 cm)
Mounting: one space in a standard 19-inch rack
Weight: 7.75 pounds (3.5 kg)
Specifications and information contained in this
User Guide subject to change without notice.