Detail：
  　　
Master EM3250:
◆ Each central processor series output in three columns, plus extended host can connect 180 microphone units.
◆ has a number of limitations while working microphone switch, you can select "1", "3" or "6", can be used to answer the occasion
◆ has background music volume and total volume of output regulator
◆ audio signal output interface, an audio signal input interface (level adjustable)
◆ Rated voltage: AC220V ± 10% 50Hz
◆ Frequency response: 20Hz-20KHz
◆ Output impedance: REC: 200Ω, LINE: 200Ω,
◆ BALANCE: 300Ω, NOBALANCE: 400Ω
◆ noise ratio S / N: 78dB (1KHz THD1%)
◆ Size Dimonsion: 480X185X66mm (19 "international standard rack)
◆ Package Size: 520 (W) x 95 (high) x 330 (D) mm

Chairman of the unit / representative unit
◆ Microphone ON / OFF using long life noiseless touch switch
◆ Built-in high-fidelity sound head capacitance, so that the sound reproduction is good, high definition, low noise, high efficiency howling suppression function, super pickup effect
◆ When the microphone is turned on, the sound head work lights up red
◆ Chairman unit has precedence switch, you can always turn off all nonvoting delegate units
◆ Type: Capacitive
◆ Point: a single point of
◆ Frequency response: 60Hz-16000Hz
◆ Sensitivity: -47 ± 3dB @ 1KHz
◆ Input voltage: 24V (central processor power)
◆ Minimum Output impedance: 1KΩ
◆ SNR: 68dB (A)
◆ Output socket: 8P terminal block
◆ Input wire: 2.1m 8P shielded wire
◆ Accessories: Wind sponge
◆ Package Size: 510 (W) x 110 (high) x 160 (D) mm
System extension cable (8-pin) Cable
◆ used to connect the host and the unit or units and between units.
◆ 8P-DIN connector (× 1), female (× 1).
◆ with 5 m, 10 m, 15 m, 25 m, 50 m specifications。