PA SYSTEM

LF-7801

Technical Specification

Model: LF-7801

Network Interface: Standard RJ45 input

Transmission Rate: 100Mbps

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

IETF SIP

Audio Format: Mp3, WMA, WAV

Audio Mode: 16 bit CD quality

Sampling Rate: 8K~48K

AUX Input: 1 group

AUX Sensitivity: 350mV

EMC Input: 1 group

EMC Sensitivity: 775mV

Local MIC Input: 1 group (Optional front or rear

panel 6.3 single plug or 3.5mm input)

Local MIC Sensitivity: 6.3 single plug 10mV, 3.5mm

interface 10mV

Line Output: 2 group

Line Output Level/Impedance: 1000mV/470Ω

Earphone Output Connector: 3.5mm interface

Weight: 4.6Kg

 

Earphone Load: 32Ω

MIC Monitor MIC: 1 group

Sensitivity of The Monitor MIC: 10mV

USB: Maximum support 4T USB device; loading

<0.1A

SD: Maximum support 128G / SDXC card

Power Consumption: 20W

Standby Power Consumption: <3W

Frequency Response: 80Hz~16KHz  -3dB/+1dB

THD: ≤0.3%

SNR: >65dB

Short-circuit Input: 0V/3.3V, Support dry contact

input

Short-circuit Output: Maximum 1A/30VDC dry

contact output

Working Temperature: 5℃~40℃

Working Humidity: 20%~80% Relative humidity,

without condensation

Working Voltage: ~190-240V 50-60Hz; DC24V/2A

Size: 484×327.5×88mm

 

Description

Installed in rooms with  low voltage or equipment rooms in each broadcast management area, you can connect two power amplifiers, mainly for program display and local broadcasting in halls, outdoor and other outdoor areas.

 

Features

 

* The standard 19-inch rack-mount design, full-aluminum industrial panel, 4.3-inch LCD screen in TFT color, 21-key industrial metal, reserved function of infrared receiver to simplify the remote control.

* The product is based on Luna cloud servers, with very high safety and excellent stability; support 7 × 24 hours continually working.

* Rich network access methods, including DHCP to automatically assign access, ADSL intelligent dial-up access, and fixed IP address access.

* Integrated 24Bit professional-grade sound card, enabling enthusiast audio playback, and the highest audio stream is 768kpbs.

* Built-in 2GByte SSD, support remote management on the server, support background downloading in limited network speed or automatic download during spare time, which reduced the burden on the network, the files in media library can be played automatically in offline state.

* Integrated USB and Micro SD (TF) card interface, maximum support 4T USB storage devices and 128G / SDXC card, and achieve the audio file playing, can make the USB, TF card, media library be freely broadcast on demand to terminals within authority scope.

* Built-in 2 channel independent audio output to achieve external amplifier amplification; Support the standard headset interface, audio monitor and headset amplification, etc.

* With 1 AUX audio input, 1 group MIC input, 1 EMC emergency input; Built-in digital pre-amplifier; support user-defined priority; with 1 monitor MIC to achieve equipment self-test, working environment monitoring and operator assessment.

* 2 Short-circuit outputs, 2 short-circuit inputs, support flexible customization function, and can realize short-circuit collection, alarm trigger, and fire control, monitoring and other linkage working with the equipments from third party and the platform application.

* 2 x 2200W power interfaces, with functions of intelligent power management, automatically cut off output power when there is no program or radio play, which saves lots energy, also with function of pre-programmed power on.

* 2-way and three-wire volume control with relay, without DC24V strong cutting power, with an unlimited number of volume control, compatible with four-wire volume control, need connect to an external power supply of DC24V.

* Graphical interface of volume control, adjustable network programs, local MIC, local AUX Volume

* With function of sound pressure alarm, when the detected volume continuously exceeds the preset range of sound pressure, it can automatically trigger specified terminal for alarm according the preset program, the trigger software interface will pop-up prompts, meantime, there is synchronizing Email sending and so on.

* Support checking information about devices status and management equipment on the WEB viewing devices of the system backstage.

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

* Support intelligent power saving and pre-opening management, to achieve system energy saving and equipment with stable and reliable work, guarantee reliable and stable controlled devices work.

* Support multiple users’ switching login, and customize the using priority of user function.

* Support function of restoring factory configuration when there is short circuit triggered, to make the system maintenance in the most convenient way.

* Real-time display the status information on program broadcasting, two-way intercom, regular broadcasting, equipment operating, IP address, MAC address etc, and can be one-key stop programming task.

* With city power supply in wide voltage +24V standby power supply with zero switching time  provide the terminal’s 7×24-hour working in the best way.