Harmonai ACT-780 8-Channel Wireless Microphone System image 1

Harmonai ACT-780 8-Channel Wireless Mic System | True Diversity, 750m Ultra-Long Range

The Harmonai ACT-780 is a professional 8-channel true diversity wireless microphone system operating in the UHF 500–900 MHz band with 200 selectable channels and stable 500-meter t...

$382.35

Model: ACT-780
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-780 8-Channel Wireless Mic System | True Diversity, 750m Ultra-Long Range

Overview

The Harmonai ACT-780 is a professional 8-channel true diversity wireless microphone system operating in the UHF 500–900 MHz band with 200 selectable channels and stable 500-meter t...

Price: $382.35
Model: ACT-780
Category: Microphones

Specifications

Parameter	Value
Receiver Architecture	Double-conversion superheterodyne
Input Power	5 W
Intermediate Frequencies	First IF 110 MHz, second IF 10.7 MHz
Wireless Interface	BNC / 50 Ω
Sensitivity	12 dBμV (80 dB S/N)
Sensitivity Adjustment Range	10–32 dBμV
Spurious Rejection (Receiver)	≥95 dB
Maximum Output Level	+10 dBV
Transmitter Antennas	Bodypack 1/4-wave whip antenna, handheld built-in antenna
Transmitter Output Power	20 mW
Transmitter Spurious Emission Suppression	-60 dB
Power Supply	Two AA batteries (recommended: 1.2–1.5 V AA)
Frequency Range	500–900 MHz
Modulation	Wideband FM
Tunable Range	50 MHz
Number of Channels	200
Channel Spacing	200 kHz
Frequency Stability	Within ±0.005%
Dynamic Range	>105 dB
Peak Frequency Deviation	±45 kHz
Audio Response	40 Hz–18 kHz (±3 dB)
Total Signal-to-Noise Ratio	>110 dB
Total Harmonic Distortion	≤0.2%
Operating Temperature	-25 °C to +40 °C

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

Harmonai ACT-780 8-Channel Wireless Microphone System product image

Product Overview

The Harmonai ACT-780 is a professional-grade 8-channel wireless microphone system, featuring true diversity reception and a double-conversion superheterodyne architecture. It delivers 200 selectable channels across the wide UHF 500–900 MHz band, ensuring stable signal transmission even in complex electromagnetic environments. With a total signal-to-noise ratio exceeding 110 dB, dynamic range greater than 105 dB, and full-vocal-frequency audio response from 40 Hz to 18 kHz (±3 dB), it delivers pristine, transparent sound quality. Whether for large concerts, corporate annual meetings, church services, or educational training, the ACT-780 reliably supports simultaneous multi-channel operation — a trusted choice for professional audio engineering.

Receiver Architecture

Double-conversion superheterodyne

Frequency Range

500–900 MHz

Number of Channels

200

Channel Spacing

200 kHz

Modulation

Wideband FM

Frequency Stability

Within ±0.005%

Dynamic Range

>105 dB

Peak Frequency Deviation

±45 kHz

Audio Response

40 Hz–18 kHz (±3 dB)

Total Signal-to-Noise Ratio

>110 dB

Total Harmonic Distortion

≤0.2%

Sensitivity

12 dBμV (80 dB S/N)

Sensitivity Adjustment Range

10–32 dBμV

Spurious Rejection (Receiver)

≥95 dB

Maximum Output Level

+10 dBV

Wireless Interface

BNC / 50 Ω

Intermediate Frequencies

First IF: 110 MHz; Second IF: 10.7 MHz

Transmitter Antennas

Bodypack transmitter: 1/4-wave whip antenna; Handheld mic: Built-in antenna

Transmitter Output Power

20 mW

Transmitter Spurious Emission Suppression

-60 dB

Power Supply

Two AA batteries (recommended: 1.2–1.5 V AA)

Operating Distance

True diversity circuitry, up to 500 meters (environment-dependent)

Operating Temperature

-25 °C to +40 °C

Input Power

5 W

Recommended Applications

The ACT-780 8-channel system is engineered for multi-user scenarios, allowing independent assignment of all 8 channels to eight speakers or performers. Ideal for large concerts, corporate galas, wedding ceremonies, church services, educational institutions, government meetings, and TV studio productions — anywhere multiple microphones must operate simultaneously. True diversity reception prevents dropouts during stage movement, while the UHF wideband and 200-channel selection effectively avoids interference from other wireless devices on-site.

For more details or customized solutions, contact the Harmonai professional team — we offer one-on-one technical support and after-sales service.