Functional characteristics
The main part of DH-4150R portable emergency broadcasting system is amplified by the front stage. The digital power amplifier is integrated with four loudspeakers. The loudspeakers are installed on the top of the vehicle. There are two installation modes: frame type and rubber magnet plate roof suction. The main engine is placed in front of the attached seat in the car. The power supply 12V connects the battery of the vehicle. It is convenient to install, strong mobility, small size, light weight and perfect protection circuit. Effective sound transmission distance (long cylinder) is 3 km (short cylinder) and 2.2 km. Various signal sources can be input through wired wireless microphone for on-site shouting, wireless signal transmission (FM and AM) for receiving, and vehicle radio for joint broadcasting. Safety performance is good, the system has over-voltage, over-current, under-voltage, over-heat, overload protection, alarm through the indicator lamp, while automatically stopping power output to ensure the safety of power amplifier and loudspeaker, loudspeaker 4 can choose to erect the roof. Modular design is realized for each component of the system. It is easy to disassemble, replace spare parts and maintain.
Standard Configuration
A Handheld F-110A Microphone
One handheld wireless microphone
One Digital Power Amplifier
One built-in 14AH (12V) battery
U-disk
Two speaker wires
One remote controller
Introduction to configuration
1. Power Square Amplifier: 4X150W 8 (_)
Frequency response: 20Hz-20KHz & plusmn; 1dB
2. Line Input 0 dB Line Output 0 dB
USB Interface MP3 Format
Microphone input: -30db
3. Frequency and Amplitude Modulation Receiving of Radio Part
FM FM
Frequency range: 88MHz-108MHz
Sensitivity: 10 UV
AM FM
Frequency range: 535KHz-1605KHz
Sensitivity: 15 MV
Host weight: 8Kg
Size: 200X240X140 mm
Wireless microphone
Frequency range: U-band 600MHz-800MHz
Frequency response: 60Hz-15KHz
Dynamic range: > 110 dB
Distortion: <0.1%
Effective Distance: > 50M
transmitter
Transmitting power: 10uw
Oscillation mode: PLL phase locking
Modulation mode: FM
Usage Voltage: 9V
Receiver
Sensitivity: 2uv
Oscillation mode: PLL phase locking
SNR: > 90 dB
Loudspeaker (YH60-1TM)
Using Nd-Fe-B magnet steel, high definition, high direction, high sound pressure (super-long cylinder)
Rated power: 60W 8
Maximum power: 120W 8
Frequency response: 180Hz-8KHz
Sensitivity: 116dB & plusmn; 1dB
Size: 350X450 (mm)
Speaker (YH60-2M)
Nd-Fe-B magnet steel with high definition, high direction and high sound pressure
Rated power: 60W 8
Maximum power: 120W 8
Frequency response: 180Hz-8KHz
Sensitivity: 114 DB & plusmn; 1 dB
