Technical Specification

Model: LF-7701

Network interface: Standard RJ45 input

Transmission Rate: 100Mbps

Support  Protocol: TCP/IP,UDP,IGMP(Multicast)

Audio Format: MP3

Audio Mode: 16 digit CD level

Sampling Frequency: 8K~48KHz

EMC Input Sensitivity: 775mV  (Unbalance)

AUX Input Sensitivity: 350mV  (Unbalance)

MIC Input Sensitivity: 5mV   (Unbalance)

AUXoutput amplitude:

1000mV  2 road lotus output interface

AUXoutput impedance: 470Ω

Treble Boost, Attenuation: ±10dB

Bass Boost, Attenuation: ±10dB

Frequency Response: 80Hz~16KHz

Power Consumption: 10W


S/N Ratio: >65dB

Environmental Temperature: 5℃~40℃

Environment Humidity:

20%~80% Relative humidity, without condensation

Power Supply: ~220-240V 50-60Hz

Size: 484×303×88mm

Weight: 5.2Kg

Product Introduce

It is a popular used model installed in low voltage room or parallel room of radio management area, matched with 2 sets of power amplifier. It is an ideal choice to broadcast in hall, corridor, outdoor areas etc.



*  With design of 19 rack mount IP/TCP network audio adapter, black alumina panel, Solid Handle, Professional mechanical assembly process, with excellent high-end appearance.

*  Industrial-grade LCD display in 3.4-inch , it can clearly show the majority of dot pattern and machine working status; equipped with infrared remote control, on-demand all contents in server program library, available to control the playback / pause, flexible and simple operation.

*  Embedded with PC technology, built-in DSP Audio processing technology design and high speed industrial chip to ensure start time less than 1 second.

*  Built-in 1-channel network hardware audio decoding module, supports TCP/IP, UDP, and IGMP (Multicast Protocol), enabling networked transmission of 16-bit CD-quality audio signals

*  One channel line(AUX) and one channel Mic (Mic) input interface. Support independent bass and treble adjustment and support offline local paging function without Internet.

*  One way of EMC input interface, enter the emergency alarm voice signal straightly as the highest priority.

*  2 way auxiliary audio signal output interface, extensible external power amplifier, the standard XLR interface, with convenient wiring connection .

*  Two way of three-wire volume control relay output interface, no need 24V power supply, it compatible with four-wire volume control alarm relay output at the same time, it needs DC 24V relay power supply.

*  Built-in intelligent power management, it will automatically cut off output power when there is no BGM music or calling, and automatically turn on the output power supply when there is a signal.

*  Built-in 3 priority setting:

   EMC signal with the highest priority

   Network alarm signal has higher priority than MIC, AUX and network background music signal

   MIC has higher priority than AUX network background music signal

   AUX and network background music are at the same priority level.

*  Support silence intensity preset decrease function, support background accompaniment preset function; support status light display, including level indicator, protection indicator, standby light and so on. Authorized operation management functions, Unified configuration and management user and password by the server.

*  It is compatible with any network structure such as routers, switches, bridge gateways, modems, Internet, 2G, 3G, 4G, multicast, and unicast.

*  Digitalized products, easy expansion, not limited by geographical location, no need to increase the engine room management equipment, adopt a total network of free road construction design, easy to install.

*  It supports remote hardware upgrade of the terminal, no need to upgrade at the local site, to reduce maintenance burdens and make more simple operation.