Description
MS-704
- 4-Channel 2RU Main Station with built-in Speaker
- Supports up to 55 beltpacks or 10 speaker stations on 4 channels
- Automatic short-circuit protection and reset with LED indicators
- Visual and audible call signaling
- 3 interruptible IFB channels
- Individual volume controls for each channel
- Program feed to both channels with selectable Program Interrupt
- Remote Mic Kill
- Stage Announce with relay
- Channel A & B Link switch
- Built-in speaker
- Universal voltage power supply
Technical Specifications
Panel Microphone Input
- Input Type: Electret
- Input Impedance: >=2K
- Mic Limiter Threshold: 0 dBu ±3 dB
- Mic Limiter Range: >= 20 dB
Headset Microphone Input
- Input Type: Dynamic
- Input Impedance: >= 1K
- Mic Limiter Threshold: 0 dBu ± 3dB
- Mic Limiter Range: >= 15 dB
Program Line Input
- Maximum Level before Clipping: >= 20 dBu
- Input Impedance: >= 5K
Headset Output
- Load Impedance: >= 8
- Output Impedance: <= 25
- Output Limiter Threshold: +5 dBu ± 3 dB
- Maximum Output Level before Distortion: >= 17 dBu
Speaker Output
- Load Impedance: >= 4
- Max Output Level before 1% Distortion: 20 dBu ± 2 dBu
Partyline Output
- O Noise: < -74 dBu
- Output Impedance: >10 K
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: >= 200
- Load Impedance: >= 600
IFB/Hot Mic
- Type: Unbalanced
- Output Impedance: 180
- Load Impedance: >= 600
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
Environmental
- 32 – 122°F (0 – 50°C)
Dimensions
- 1.75 x 19 x 6.5 in (HxWxD)
- (44 x 483 x 165 mm)
Weight
- 6.1 lbs (2.8 kg)
