SOUND MASKING SYSTEM > Products > Main unit > AMS-H2

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SOUND MASKING SYSTEM

Main unit

Output unit

Sensor unit

Speaker unit

Control unit
AMS-H2

2-channel sound masking main unit

AcouMaster 2-channel

(AMS-H2)

AcouMaster 2-channel

(AMS-H2)

System Features

  • INDEPENDENT CHANNEL SETTINGS

    • Channels 1 and 2 can be configured and adjusted independently.

  • SUPPORTS UP TO 50 SPEAKERS

    • Up to 25 speakers per channel
    • Up to 50 speakers in total

  • COVERAGE AREA: 4–25 m² (1.2–7.6 pyeong)

    • Each speaker covers approximately 4–25 m² (1.2–7.6 pyeong)

  • AMBIENT NOISE COLLECTION / ANALYSIS SENSORS

    • Supports up to 4 ambient noise collection and analysis sensors per channel (up to 8 sensors in total)
    • Connection distance: up to 300 m via RJ45 LAN cable

  • PAGING SYSTEM AND BGM SUPPORT

    • One audio input can be used for a paging system and BGM
    • Supports independent level control for each channel

  • MP3 PLAYER AND EXTERNAL AUDIO SOURCE PLAYBACK

    • Supports playback from the built-in MP3 player and external audio sources via SD card

  • AUTOMATIC AMBIENT NOISE ANALYSIS AND NEUTRALIZATION SOUND LEVEL ADJUSTMENT

    • Analyzes ambient noise levels in real time and automatically adjusts the neutralization (masking) sound level and level change time.
    • Level adjustment: ±15 dB
    • Level change time: 1–9 seconds per level

  • REAL-TIME NOISE MONITORING

    • Stores ambient noise levels collected by real-time noise sensors, along with noise levels for each octave band.
    • Noise data can be checked in real time through the monitoring function.
    • Up to 4 channels can be displayed on a single screen.

  • AUTOMATIC / MANUAL FREQUENCY-LEVEL SETTING FOR INDEPENDENT NEUTRALIZATION (MASKING) SOUND

    • Generates a sound spectrum using 1/6-octave (HD Octave™) technology
    • The frequency level of the neutralization (masking) sound can be set automatically or manually for each channel

  • AUTOMATIC CALIBRATION FOR DIFFERENT NOISE ENVIRONMENTS

    • The Auto Calibration function automatically calibrates the neutralization sound according to the surrounding noise environment
    • Supports selection of 6 neutralization sound settings

  • FRONT LCD DISPLAY AND BUTTONS

    • Equipped with a front LCD display and control buttons
    • The neutralization sound level can be checked directly on the unit

  • PC COMMUNICATION SUPPORT

    • Supports PC communication via LAN and USB

  • SYSTEM OPERATION SCHEDULING

    • System ON/OFF schedules can be configured by:
      - Weekly schedule: Sunday–Saturday
      - Daily schedule: 24-hour basis

  • MAIN UNIT POWER CONSUMPTION

    • Main unit power consumption: 4W or less

  • KC CERTIFICATION

    • Certification No.: RR-Aec-AMS2
Specification
MASKING OUTPUT
MASKING OUTPUT
Masking Output Channels 2
Speakers per Output Channel 25
Maximum Number of Speakers 50
NEUTRALIZATION SOUND (MASKING SOUND)
NEUTRALIZATION SOUND (MASKING SOUND)
Volume Level Adjustment 30–70 dB with Mute support
Masking Sound Equalizer Automatic calibration or manual adjustment of 50 spectrum bands (1/6 octave) from 50 Hz to 14.4 kHz
Masking Spectrum 12 preset spectra and user-adjustable manual settings
(50 spectrum bands)
AUTOMATIC LEVEL CONTROL
AUTOMATIC LEVEL CONTROL
Sensor Port 1 (RJ45)
Sensor Connections Up to 8 sensors (daisy-chain connection)
Sensors per Channel Up to 4
Sensor Control Independent sound masking volume control for each channel
AUTOMATIC LEVEL ADJUSTMENT
AUTOMATIC LEVEL ADJUSTMENT
Adjustment Range -15 to +15 steps based on the preset masking level
Automatic Masking Level Adjustment Level change time can be set for each step
- Normal Mode: 1–9 sec
- Fast Mode: 0.2–2.0 sec
(Automatically switches to Fast Mode when a noise
fluctuation of 6 dB or more is detected)
AUDIO INPUT PORT
AUDIO INPUT PORT
Port 1
Mixer Function Mixes audio sources with the masking output for each main channel. The audio input and MP3 source can be
independently mixed or muted
Volume Level Adjustment 30–70 dB with Mute support
MP3
MP3
Storage Media External SD card
Playback Capacity Up to 99 tracks
Volume Level Adjustment 30–70 dB with Mute support
SCHEDULING
SCHEDULING
Schedule User-configurable weekly schedule (7 days, Sun.–Sat.)
with hourly ON/OFF settings for each day
Operation Operates in Low-Power (OFF) or Normal (ON)
Mode according to the preset schedule
NOISE DATA STORAGE
NOISE DATA STORAGE
Data Stored SPL (Sound Pressure Level), MSL (Masking Sound Level),
and 20-band spectrum data
Storage Capacity 4 MB memory. Stores up to 12 days of 2-channel data
DISPLAY & BUTTON FUNCTIONS
DISPLAY & BUTTON FUNCTIONS
Display 20 characters × 4 lines, 80 characters total, 60 × 20 mm
Buttons 5 (Power, Cancel, Select, Mute, Program & Enter)
POWER
POWER
Adapter 220 VAC, 60 Hz / 24 VDC, Max. 48 W
PHYSICAL SPECIFICATIONS
PHYSICAL SPECIFICATIONS
Dimensions (W × D × H) 215 × 190 × 44 mm
Weight 2.5 kg (3.3 kg including packaging)
WARRANTY
WARRENTY
Service Warranty 1 year (standard)
Product Service Life 8 years