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MS-704

The MS-704 is a 2RU four-channel main station with programmable front panel buttons, individual channel short-circuit protection, individual channel volume control, and a regulated fail-safe power supply.

Note: Access the 再来一个 Power Supply Calculator to estimate power requirements for analog partyline systems.

Details

  • 支持s 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
  • 远程灭麦
  • Stage Announce with relay
  • 一个频道 & B链路开关
  • Built-in speaker
  • Universal voltage power supply

项目代码

MS-704

技术
规范

Panel Microphone Input

输入类型: 驻极体

Input Impedance: >=2K

Mic Limiter Threshold: 0dBu±3dB

Mic Limiter Range: >= 20dB

 
Headset Microphone Input

输入类型: 动态

Input Impedance: >= 1K

Mic Limiter Threshold: 0dBu±3dB

Mic Limiter Range: >= 15 dB

 
Program Line Input

Maximum Level before Clipping: >= 20dBu

Input Impedance: >= 5K

 
耳机输出

负载阻抗: >= 8

Output Impedance: <= 25

Output Limiter Threshold: ±3dB

Maximum Output Level before Distortion: >= 17dBu

 
扬声器输出

负载阻抗: >= 4

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

 
Partyline Output

O噪声: < -74dBu

Output Impedance: >10K

 
Partyline Input

相声: < -60dB

Max level before Clipping: >= 12dBu

Sidetone Null Capability: > 25dB

 
Stage Announce/平衡 Line Out

类型: 平衡

Output Impedance: >= 200

负载阻抗: >= 600

 
招标/热麦克风

类型: 不平衡

Output Impedance: 180

负载阻抗: >= 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

最大变形
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%
 
噪音

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

 
最大增益

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

 
最小增益
Panel Mic - Partyline: <= 25 dB
 
电力网

Input Voltage Range: 100 - 240v交流电

Input Frequency Range: 50 - 60Hz

输入功率: <= 60V AC

Output Voltage: 30v dc±0.5V

Output Current per Channel (Continuous): 1.2A

Output Current per Channel (Peak): 2A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period)

Short Circuit Recovery Time (1st short):<= 0.5秒

Short Circuit Recovery Time >= 20 shorts in 20sec: <= 20 sec

 
环境
32 - 122°F (0 - 50°C)
 

19 x 3.5 x 10.5 (WxHxD)

(483 x 88 x 267mm)

 
重量
6.1磅(2.8kg)

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