One drag two true diversity/large-scale performance wireless microphone

SKM5500U

It is a dual channel true diversity wireless microphone with a more stable reception method, automatic signal selection, elimination of reception dead angles, and avoidance of frequency interruption. This set of microphones adopts a new type of shockproof design to achieve excellent performance with low touch noise, lower mouth spray sensitivity, and acoustic transparency of fixed polarization capacitor microphones. It can transmit "completely uncompressed, no artificial traces, and has a good dynamic range of audio". It is designed for harsh wireless environments and uses digital audio DSP encoding and decoding technology to transmit high-quality audio. The transmission in HD mode has no traces of compression or staining, and the sound quality can be comparable to wired microphones. The host also has a monitoring function to monitor the transmitter in real-time, ensuring reliable performance. Having a beautiful appearance, convenient operation, and stunning price, we strive to gain a competitive advantage in the market with superior professional quality. Suitable for high demand nightclubs, multifunctional demonstration halls, hotels, conferences, and small to medium-sized performance occasions.

Product features:

The 1U metal chassis adopts international EIA standards, combined with a novel and concise LCD display, showcasing elegance.

◆ Using the latest encryption technology to communicate in the ultra-high frequency band, using the latest 5G fast audio signal transmission: 10Gbit/s, no delay transmission, solving the delay caused by distance, achieving instant transmission effect.

Ultra wideband UHF640MHz~690MHz, automatic signal selection, dual channel receiving circuit for true diversity reception.

The true diversity receiving system adopts two receiving circuits with the same channel to reduce the noise and leakage caused by radio frequency interference.

Adopting a dual noise locking circuit design of noise locking and field strength locking, it effectively prevents RF interference from other microphones and improves signal-to-noise ratio.

Adopting a 6.3mm unbalanced output and XLR XLR balanced output synchronous output design, it is convenient to connect various audio processing devices.

The receiver has a bright LCD display that can display the working channel or frequency, RF, and built-in electronic volume.

Equipped with electronic volume adjustment, the SYNC knob can be rotated left and right to easily adjust the volume of the microphone.

Equipped with dual channel headphone monitoring output and volume adjustment for monitoring.

◆ It has the function of [AFS] automatic search for clean and non-interference frequencies in the actual working environment. Long press the SYNC button, then short press to select SCAN, and rotate the button left and right to automatically search and lock in channels that are not interfered with in the actual working environment.

◆ It has a frequency locking function. Long press the SYNC button, then short press to select LOCK SET, rotate the button left and right, and select ON/OFF to achieve the frequency locking function switch.

◆ Equipped with manual frequency modulation function, long press the SYNC button, then short press to select FREQ SET, and rotate the button left and right to adjust to the appropriate frequency point.

◆ Equipped with [IR] infrared automatic frequency synchronization function, as long as the SYNC button is briefly pressed, the display screen flashes SYNC, and the transmitter and receiver's IR light are aligned, the transmitter can immediately accurately lock the receiver's working frequency point.

The stable PLL phase locked oscillation circuit, combined with the "digital pilot" mute control function and the "noise detection" mute control function, can effectively block the noisy RF interference of computer devices, song players, and DVDs in the working environment.

The handheld microphone has a novel design and adopts a new technology OLED LCD display screen, which can display the working frequency. The tube body is made of sturdy and durable all alloy material, effectively protecting the built-in circuit board components and battery rack, and has an ergonomic grip.

◆ Precision low power circuit design, using 2 AA alkaline batteries, with a battery life that is twice that of a regular microphone.

It can be paired with a wireless handheld microphone and wireless waist pack transmitter.

Technical indicators:

system parameter

RF carrier frequency range: 640MHz~690MHz

Frequency stability: ± 0.005%

Effective working distance (ideal environment): 150m (meters)

Audio companding: AVA classic audio companding circuit

Audio frequency response: 50Hz~18KHz/± 3dB

Dynamic range:>105dB

Signal to noise ratio (A-weighted):>105dB

Total harmonic distortion:<0.6% @ 1KHz

Working temperature range: -10 ° C~+50 ° C

receiver

Chassis specification: EIA standard 1U

Receiving bandwidth: 640MHz~690MHz

Reception method: FM superheterodyne true diversity reception

RF sensitivity: When the offset is equal to 25KHz and the input is 5dBv, S/N ≥ 60dB

Silence adjustment: 10dB~30dB, adjustable by 5dB per step

Frequency synchronization method: IR Sync

Maximum output level: Maximum output+9dBV

Output level adjustment range: -3dB~+18dB, adjustable by 3dB per step

Audio output socket: 2 XLR XLR balanced sockets and φ 6.3mm unbalanced socket

Power supply method: DC12V/1A

Normal working current: DV12V, 330mA

Overall dimensions: 420mm (width) x 45mm (height) x 195mm (depth)

Net weight: approximately 1.8Kg

Wireless handheld microphone

·The appearance design is novel, and the tube body is made of sturdy and durable all alloy material, effectively protecting internal circuit components and having a grip that conforms to ergonomic concepts.

Carrier bandwidth: 640MHz~690MHz

Oscillation mode: PLL phase locked frequency synthesis

Transmission power: 5mW/25mW

Carrier error: 0.5KHz

Harmonic radiation: Above 45dB below the main wave

Modulation method: FM modulation

Nominal/maximum frequency deviation: ± 45KHz

Maximum input sound pressure: Maximum input -11dBv

Frequency setting: IR Sync

Power supply method: 2 AA 1.5V batteries

Battery usage time:>8 hours

Boundary dimension: 38mm（ φ) X280mm long