RM-704

Dual-action electronic Momentary/Latching Talk buttons

Individual listen volume controls

Visual and audible call signaling

Balanced audio input with program interrupt (IFB)

External switchable line termination on each channel

Microphone limiting

Hot mic and line-level outputs

Stage Announce with relay

Built-in speaker

Panel Microphone Input

Input Type: Electret

Input Impedance: >=2K

Mic Limiter Threshold: 0dBu ±3dB

Mic Limiter Range: >= 20dB

Headset Microphone Input

Input Type: Dynamic

Input Impedance: >= 1K

Mic Limiter Threshold: 0dBu ±3dB

Mic Limiter Range: >= 17dB

Program Line Input

Maximum Level before Clipping: >= 20dBu

Input Impedance: >= 5K

Headset Output

Load Impedance: >= 8

Output Impedance: <= 25

Output Limiter Threshold: +5dBu ± 3dB

Maximum Output Level before Distortion: >= 17dBu

Speaker Output

Load Impedance: >= 4

Max Output Level before 1% Distortion: 20dBu ± 2dBu

Partyline Output

Off Noise: < -74dBu

Output Impedance: >10K

Partyline Input

Crosstalk: < -60dB

Max level before Clipping: >= 12dBu

Sidetone Null Capability: > 25dB

Stage Announce/Balanced Line Out

Type: Balanced

Output Impedance: >= 200

Load Impedance: >= 600

IFB/Hot Mic

Type: Unbalanced

Output Impedance: 150

Load Impedance: >= 600

Frequency Response

Panel Mic - Partyline: 600 - 10KHz ± 3dB

Headset Mic - Partyline: 200 - 12KHz ± 3dB

Headset Mic - Line Out: 200 - 12KHz ± 3dB

Program Input - Partyline: 100 - 17KHz ± 3dB

Program Input - Headset Out: 200 - 10KHz ± 3dB

Program Input - Speaker Out: 300 - 10KHz ± 3dB

Partyline - Headset Out: 200 - 10KHz ± 3dB

Partyline - Speaker Out: 300 - 10KHz ± 3dB

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: < -65dBu

Headset Mic - Partyline: < -70dBu

Headset Mic - Line Out: < -55dBu

Program Input - Partyline: < -85dBu

Program Input - Headset Out: < -60dBu

Program Input - Speaker Out: < -60dBu

Partyline - Headset Out: < -50dBu

Partyline - Speaker Out: < -50dBu

Max Gain

Panel Mic - Partyline: >= 37dB

Headset Mic - Partyline: 41dB ± 2dB

Headset Mic - Hot Mic Out: 55dB ± 3dB

Headset Mic - Announce Out: 55dB ± 3dB

Program Input - Partyline: >= -16dB

Program Input - Headset Out: >= 18dB

Program Input - Speaker Out: >= 24dB

Partyline - Headset Out: >= 34dB

Partyline - Speaker Out: >= 40dB

Min Gain

Panel Mic - Partyline: <= 25dB

DC Power

Input Voltage Range: 20-30 VDC

Input Current (Idle): <=165 mA

Input Current (Max): <=195 mA

Rear Panel Connectors

Intercom: (4) XLR-3M (1 per channel)

(4) XLR-3F (1 per channel)

Announce Out: (1) XLR-3M (audio)

Program: (1) XLR-3F

Hot Mic / IFB Interface (1) 1/4 in. (0.64 cm) phone jack

Accessory: (1) DB-15F

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) Mic on button

(1) All talk button

(1) Announce button

(4) Program ON-OFF-INTERRUPT DIP switches

(1) Program level control

(4) Listen adjust controls

(4) Channel null adjust controls

(4) Channel program feed adjust controls

(4) Talk buttons

(4) Call buttons

(4) Listen buttons

(1) Speaker ON-OFF switch

(1) Speaker volume control

(1) Panel mic gain control

(1) Sidetone adjust control

(1) Headset audio limiter DIP switch

(3) Interrupt enable DIP switches

(4) Auto-call DIP switches

(4) Auto-talk/listen DIP switches

(4) Talk latch disable DIP switches

(4) Line length DIP switches

Environmental

32 - 122F (0 - 50C)

Dimensions

19 in. W x 3.5 in. H x 10.5 in. D

(483 mm x 88 mm x 267 mm)

Weight

10.07lbs. (4.58 kg)