NM-01 - Module de masquage sonore TOA - Free user manual and instructions
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| Product Type | Sound Masking Module |
| Brand | TOA |
| Model | NM-01 |
| Primary Function | Generates ambient background noise to ensure speech privacy and reduce distractions in offices, clinics, and similar environments. |
| Power Supply | 24 V DC (typically powered via a system controller or separate power adapter) |
| Dimensions (W x H x D) | 120 mm x 30 mm x 70 mm |
| Weight | 150 g |
| Audio Output | Adjustable line-level output, 0 dBm typical, balanced 600 ohm |
| Connectivity | Balanced audio input/output terminals; remote volume control input |
| Remote Control | External potentiometer (10 kΩ) for volume adjustment |
| Installation | Clip-on for DIN rail or direct surface mount with screws |
| Operating Temperature Range | 0°C to 40°C |
| Operating Humidity | 20% to 90% RH (non-condensing) |
| Enclosure Material | Metal chassis with protective coating |
| Maintenance | Clean with a soft, dry cloth; avoid solvents and moisture |
| Safety Compliance | CE marked; designed for low-voltage operation |
| Spare Parts | No user-serviceable parts; contact an authorized TOA service center |
| Repairability | Repairable by authorized TOA service centers; typical service life 10 years |
| General Information | Provides zone-specific masking with adjustable output level and spectrum shaping |
Frequently Asked Questions - NM-01 TOA
What is the purpose of the TOA NM-01 sound masking module?
The NM-01 generates a calibrated ambient noise spectrum that masks conversations and reduces distractions, improving speech privacy in open offices, medical facilities, and other sensitive areas.
How do I connect the NM-01 to my existing audio system?
Connect the NM-01 to your system via its balanced audio input/output terminals. Use shielded twisted-pair cable for best signal integrity and connect the output to an amplifier or direct to ceiling loudspeakers.
Can I adjust the volume of the masking sound?
Yes, the NM-01 has a front-panel volume control and also supports an external 10 kΩ potentiometer for remote adjustment, allowing fine-tuning of the masking level.
Where should I install the NM-01 for best performance?
Install the NM-01 in a secure, dry location near the audio distribution point, away from heat sources. For wall mounting, ensure the mounting surface can support the module's weight.
Is the NM-01 compatible with 24V DC power supplies?
Yes, the NM-01 is designed to operate on 24 V DC. Use a regulated power supply with adequate current rating (typically 100 mA) and observe correct polarity.
How do I maintain the NM-01?
Maintenance is minimal. Clean the enclosure with a soft, dry cloth when needed. Do not use abrasive cleaners, solvents, or water, as these can damage the electronics.
What does the 'Spectrum' control do?
The Spectrum control shapes the frequency response of the generated noise, allowing you to tailor the masking sound to the acoustic environment, typically boosting or cutting low or high frequencies for better masking efficiency.
Can I use multiple NM-01 units in a large office?
Yes, you can daisy-chain or independently connect multiple NM-01 modules to cover a larger area. Each unit can be adjusted individually to create a uniform sound masking field.
What is the output level of the NM-01?
The NM-01 provides a line-level output of 0 dBm (approx. 0.775 V RMS) into a balanced 600 ohm load, adjustable via the volume and spectrum controls.
Is the NM-01 CE certified?
Yes, the NM-01 complies with CE requirements for electromagnetic compatibility and safety, making it suitable for installation in the European Economic Area.
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USER MANUAL NM-01 TOA
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Product information
Brand : TOA
Model : NM-01
Category : Module de masquage sonore