Harmonai ACT-804 Rectangular Conference Microphone image 1

Harmonai ACT-804 Rectangular Conference Microphone | UHF Digital Pilot Tone Professional Conference Mic

The Harmonai ACT-804 rectangular conference microphone features UHF digital pilot tone technology and a supercardioid condenser capsule, with an effective pickup distance of 50 cm...

$191.18

Model: ACT-804方管会议话筒
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-804 Rectangular Conference Microphone | UHF Digital Pilot Tone Professional Conference Mic

Overview

The Harmonai ACT-804 rectangular conference microphone features UHF digital pilot tone technology and a supercardioid condenser capsule, with an effective pickup distance of 50 cm...

Price: $191.18
Model: ACT-804方管会议话筒
Category: Microphones

Specifications

Parameter	Value
Main Unit Operating Voltage	DC 12V
Main Unit Power Consumption	12W
Main Unit Operating Current	1000mA
Display	LCD × 4
RF Carrier Frequency Range	615–695MHz
Operating Distance	150 m (line-of-sight)
Modulation System	FM
Pilot Tone Method	Digital pilot tone
Maximum Number of Channels	200
System Compatibility	Up to 15 units operating simultaneously
Frequency Response (Main Unit)	100Hz–15kHz (±3dB)
Dynamic Range	>110dB
Total Harmonic Distortion THD (Main Unit)	<0.5%
Signal-to-Noise Ratio	>100dB (A)
RF Sensitivity	-98dBm (30dB SNR)
Image Rejection	>75dB
Output Interfaces	XLR × 4 / 1/4-inch × 1
Audio Output Level (XLR)	+10dBV
Audio Output Level (1/4-inch)	+8dBV
Output Impedance	3KΩ
Power Requirement (Main Unit)	12V/1A
Operating Temperature Range	0–50℃
Receiver Sensitivity	-105dBm
THD (Receiver)	<0.01%

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

ACT-804 Rectangular Conference Microphone product image

Product Overview

The Harmonai ACT-804 Rectangular Conference Microphone is a professional-grade UHF wireless conference microphone system featuring digital pilot tone technology and PLL frequency synthesis, ensuring stable, interference-free signal transmission. Its supercardioid condenser electret capsule precisely captures speech, with an effective pickup distance of 50 cm — ideal for conference rooms, auditoriums, and multi-purpose halls.

The main unit supports simultaneous operation of up to 15 microphones, offers 200 selectable channels, and includes dual XLR and 1/4-inch output interfaces for seamless integration with a wide range of audio equipment.

Main Unit Operating Voltage

DC 12V

Main Unit Power Consumption

12W (operating current 1000mA)

Display

LCD × 4

RF Carrier Frequency Range

615–695 MHz

Operating Distance

150 m (line-of-sight)

Modulation System

Pilot Tone Method

Digital pilot tone

Maximum Number of Channels

200

System Compatibility

Up to 15 units operating simultaneously

Frequency Response (Main Unit)

100 Hz–15 kHz (±3 dB)

Dynamic Range

>110 dB

Total Harmonic Distortion THD (Main Unit)

<0.5%

Signal-to-Noise Ratio

>100 dB (A-weighted)

Output Interfaces

XLR × 4 / 1/4-inch × 1

Audio Output Level

XLR: +10 dBV / 1/4-inch: +8 dBV

Microphone Type

Condenser / Electret

Capsule Polar Pattern

Supercardioid

Microphone Sensitivity

>−20 dBm (1 V)

Transmit Power

>+10 dBm (10 mW)

Frequency Response (Microphone)

100 Hz–18 kHz

Pickup Rod Length

20 cm

Conference Base Dimensions

18 × 12 × 9 cm (L × W × H)

Effective Pickup Distance

50 cm

Power Requirement (Microphone)

1.5 V × 3 (AA batteries)

Battery Life

>10 hours (based on 2400 mAh capacity)

Mobile Phone EMI Interference Protection

Yes

Frequency Technology

PLL frequency synthesis technology

Recommended Applications

The ACT-804 Rectangular Conference Microphone is engineered specifically for professional conference environments, including government meeting rooms, corporate auditoriums, academic symposiums, multi-purpose halls, and hotel conference venues. Its supercardioid polar pattern effectively suppresses ambient noise; the ability to network up to 15 units meets the demands of medium- to large-scale meetings; and intelligent LCD display with low-battery warning simplifies operation and maintenance.

Explore more Harmonai conference microphone models — contact us today for a customized solution and quotation.