Panel Microphone Input
Input Type: Electret
Input Impedance: >=2KΩ
Mic Limiter Threshold: 0 dBu ±3 dB
Mic Limiter Range: >= 20 dB

Headset Microphone Input
Input Type: Dynamic
Input Impedance: >= 1KΩ
Mic Limiter Threshold: 0 dBu ± 3dB
Mic Limiter Range: >= 15 dB

Program Line Input
Maximum Level before Clipping: >= 20 dBu
Input Impedance: >= 5KΩ

Headset Output
Load Impedance: >= 8Ω
Output Impedance: <= 25Ω
Output Limiter Threshold: +5 dBu ± 3 dB
Maximum Output Level before Distortion: >= 17 dBu

Speaker Output
Load Impedance: >= 4Ω
Max Output Level before 1% Distortion: 20 dBu ± 2 dBu

Partyline Output
Off Noise: < -74 dBu
Output Impedance: >10 KΩ

Partyline Input
Crosstalk: < -60 dB
Max level before Clipping: >= 12 dBu
Sidetone Null Capability: > 25 dB

Stage Announce/Balanced Line Out
Type: Balanced
Output Impedance: >= 200Ω
Load Impedance: >= 600Ω

IFB/Hot Mic
Type : Unbalanced
Output Impedance: 180Ω
Load Impedance: >= 600Ω

Frequency Response
Panel Mic - Partyline: 600 - 10KHz ± 3dB
Headset Mic - Partyline: 200 - 12KHz ± 3 dB
Headset Mic - Line Out: 200 - 12KHz ± 3 dB
Program Input - Partyline: 100 17KHz ± 3 dB
Program Input - Headset Out: 200 - 10KHz ± 3 dB
Program Input - Speaker Out: 300 - 10KHz ± 3 dB
Partyline - Headset Out: 200 - 10KHz ± 3 dB
Partyline - Speaker Out: 300 - 10KHz ± 3 dB

Max Distortion
Panel Mic - Partyline: <= 0.5%
Headset Mic - Partyline: <= 0.5%
Headset Mic - Line Out: <= 0.5%
Program Input - Partyline: <= 0.2%
Program Input - Headset Out: <= 0.2%
Program Input - Speaker Out: <= 0.5%
Partyline - Headset Out: <= 0.2%
Partyline - Speaker Out: <= 0.5%

Noise
Panel Mic - Partyline: < -65 dBu
Headset Mic - Partyline: < -70 dBu
Headset Mic - Line Out: < -55 dBu
Program Input - Partyline: < -85 dBu
Program Input - Headset Out: < -60 dBu
Program Input - Speaker Out: < -60 dBu
Partyline - Headset Out: < -50 dBu
Partyline - Speaker Out: < -50 dBu

Max Gain
Panel Mic - Partyline: >= 37 dB
Headset Mic - Partyline: 41 dB ± 2 dB
Headset Mic - Hot Mic Out: 55 dB ± 3 dB
Headset Mic - Announce Out: 55 dB ± 3 dB
Program Input - Partyline: >= -16 dB
Program Input - Headset Out: >= 18 dB
Program Input - Speaker Out: >= 24 dB
Partyline - Headset Out: >= 34 dB
Partyline - Speaker Out: >= 40 dB

Min Gain
Panel Mic - Partyline: <= 25 dB

Mains Power
Input Voltage Range: 100 - 240 VAC
Input Frequency Range: 50 - 60 Hz
Input Power: <= 60 VAC
Output Voltage : 30 VDC ± 0.5V
Output Current per Channel (Continuous): 1.2 A
Output Current per Channel (Peak): 2 A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period)

Short Circuit Recovery
Time (1st short): <= 0.5 sec
Short Circuit Recovery Time >= 20 shorts in 20sec: <= 20 sec

Station Capacity
Up to 40 RS-601 beltpacks or 10 speaker stations or 12 headset stations distributed over both channels

Rear Panel Connectors
Intercom: (6) XLR-3M (3 per channel)
Announce Out: (1) XLR-3M (audio)
Announce Relay: (1) 1/4 in. (0.64 cm) phone jack (relay)
Program: (1) XLR-3F
Hot Mic / IFB Interface: (1) 1/4 in. (0.64 cm) phone jack
AC Power: IEC 320 connector

Rear Panel Controls
(2) Termination On-Off switches
(8) Option switches
(1) Power switch
(1) Tone alert volume control

Front Panel Connectors
Panel Mic: (1) 1/4 in. (0.64 cm) panel mounting jack
Headset: (1) XLR-4M

Front Panel Controls & Indicators
(1) Panel / headset mic switch
(1) Announce button
(1) Partyline link button
(2) Program ON-OFF-INTERRUPT switches
(3) Program level controls
(2) Listen controls
(2) Sidetone null controls
(2) Talk buttons
(2) Call buttons
(1) Tone alert button
(1) RMK button
(1) Speaker ON-OFF switch
(2) Short LEDs

Environmental
32 - 122˚F (0 - 50˚C)

Dimensions
19 in. W x 1.75 in. H x 6.5 in. D
(483 mm x 44 mm x 165 mm)

Weight
6.06 lbs. (2.75 kg)