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Conference room audio kit

KTV sound system set

Professional Audio

Professional power amplifier

Audio Processor

Analog Mixer

Power sequencer

Wireless handheld microphone

Conference microphone

LD4000

Other models   LD-4000     LD-8000     LD-X8     LD-X8S


LD4000 Product Description
 
◆ The industry's first patented technology for automatic hand sensing, which automatically silences the microphone within 3 seconds after it leaves the hand and is stationary (can be placed in any direction or angle), automatically saves energy and enters standby mode after 5 minutes, automatically shuts down and completely cuts off the power after 15 minutes, and has a floor to ceiling mute function. It is a new concept of intelligent and automated wireless microphone
◆ A brand new audio circuit architecture, with delicate high notes and strong mid to low frequencies, especially in terms of sound details with perfect expressiveness. Superb dynamic tracking capability allows for easy pickup and playback at both long and short distances
◆ The brand new concept of digital pilot technology completely solves the phenomenon of KTV rooms crossing frequencies, never crossing frequencies!
◆ Equipped with howling suppression function circuit for easier debugging
◆ Automatic search for interference free channels for easier installation
◆ The host can flexibly set the usage frequency
◆ UHF frequency band, phase-locked loop (PLL) frequency synthesis
◆ 100 x 2 channels, with a channel spacing of 250KHz
◆ Ultra heterodyne secondary frequency conversion design with extremely high receiving sensitivity
◆ The RF part adopts multi-stage high-performance dielectric filters with excellent anti-interference ability
◆ The first intermediate frequency adopts a sound table filter, and the second intermediate frequency adopts a three-stage ceramic filter, which greatly improves the anti-interference ability
Specially designed mute circuit, completely eliminating the impact noise of microphone on and off
◆ The microphone uses an Easybuy No.5 battery, which can last for 6-10 hours
◆ The microphone adopts a unique boost design, and the decrease in battery level does not affect the overall performance of the handheld microphone
◆ Ideal operating radius of up to 80 meters, suitable for various requirements
◆ The default configuration is a microphone tube with a blue backlight on the LCD screen and an aluminum alloy body
◆ Equipped with adjustable transmission power and adjustable squelch threshold, the receiver's rear panel is equipped with an external squelch control knob, which screens and filters; Flexible setting of effective operating radius between 10 meters and 80 meters
◆ Equipped with infrared automatic frequency matching function, it can quickly synchronize the microphone to the working channel of the receiver
◆ KTV engineering specific model, two microphones, one host. Easy configuration of over 100 KTV rooms, unique product structure design, fast and easy maintenance.
 
Technical parameters:
Frequency range: 640-690MHz,
Adjustable number of channels: 100×2
Oscillation mode: Phase Locked Loop Frequency Synthesis (PLL),
Frequency stability: ±10ppm,
Receiving method: Superheterodyne secondary frequency conversion,
Receiving sensitivity: -95~-67dBm,
Audio frequency response: 40-18000Hz,
Harmonic distortion: ≤0.5%,
Signal to Noise Ratio: ≥110dB,
Audio output: Balanced output and mixed output,
Transmission power: 3-30mW ,
Modulation method: Frequency modulation (FM)
Battery specifications: 2 batteries of size 5,
Power specifications: Power specifications: 100-240V 50-60Hz 12VDC (switching power adapter) or 220VAC/50-60Hz 12VDC (linear power supply),
Power consumption: ≤10W

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