1. Introduction
The TOA PM-660U is a desktop paging microphone designed for clear voice transmission in public address and announcement systems. It features a robust construction and a user-friendly design, making it suitable for various professional environments.
This manual provides essential information for the proper setup, operation, and maintenance of your PM-660U microphone. Please read it thoroughly before use to ensure optimal performance and longevity of the product.
2. Product Features
- Unidirectional Polar Pattern: Focuses sound capture from the front, reducing background noise.
- Large Talk Switch with Lock Lever: Provides easy and convenient operation for momentary or continuous announcements.
- Robust Anti-Vibration Construction: Minimizes handling noise and ensures stable performance.
- Balanced Output: Helps to reduce interference and noise in audio signals.
- Remote Control Switch: Interlocked with the talk switch for amplifier power on/off operation or chime activation.
3. Package Contents
Verify that all items are present in the package:
- TOA PM-660U Desktop Paging Microphone
- Warranty Card
This image displays the white packaging box for the TOA PM-660U Desktop Paging Microphone. The box features the text 'TOA Electronics' and 'PM660U' on its visible side.
4. Setup Instructions
Follow these steps to set up your TOA PM-660U microphone:
- Placement: Position the microphone on a stable, flat surface, such as a desk or podium, ensuring it is free from vibrations.
- Cable Connection: The PM-660U comes with a 4-conductor (2-shielded) cable without a pre-attached plug. Connect this cable to the appropriate input on your amplifier or audio system. Ensure correct wiring for balanced audio and remote control functions (if utilized). Refer to your amplifier's manual for specific wiring requirements.
- Remote Control Wiring (Optional): If using the remote control function for amplifier power or chime activation, connect the designated remote control wires from the microphone cable to the corresponding terminals on your amplifier. The remote control switch handles up to 500 mA at 30 V DC.
- System Power: Once all connections are secure, power on your amplifier and audio system.
5. Operating Instructions
The PM-660U is designed for straightforward operation:
- Momentary Paging: To make a brief announcement, press and hold the large talk switch. Speak clearly into the microphone. Release the switch to end the announcement.
- Continuous Paging: For longer announcements, press the large talk switch and then slide the lock lever to the 'ON' position. This will keep the microphone active without needing to hold the switch. To deactivate, slide the lock lever back to the 'OFF' position and release the talk switch.
- Volume Adjustment: Adjust the microphone input level on your amplifier or mixer to achieve the desired volume without distortion.
- Remote Control Function: When the talk switch is activated (either momentarily or locked), the remote control switch will also activate, triggering any connected amplifier power on/off or chime functions.
6. Maintenance
Proper maintenance ensures the longevity and performance of your microphone:
- Cleaning: Wipe the microphone body with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, followed by immediate drying. Do not use abrasive cleaners, solvents, or harsh chemicals.
- Storage: When not in use for extended periods, store the microphone in a clean, dry environment, away from extreme temperatures and humidity.
- Cable Care: Avoid kinking or sharply bending the microphone cable. Regularly inspect the cable for any signs of wear or damage.
- Avoid Impact: Protect the microphone from drops or strong impacts, which can damage internal components.
7. Troubleshooting
If you encounter issues with your PM-660U microphone, refer to the following:
- No Sound Output:
- Ensure the microphone cable is correctly wired and securely connected to the amplifier input.
- Verify the amplifier is powered on and the input channel for the microphone is selected and not muted.
- Check the amplifier's volume and gain settings.
- Confirm the talk switch on the microphone is pressed or locked.
- Low or Distorted Sound:
- Adjust the gain and volume levels on your amplifier. Too high a gain can cause distortion, too low can result in weak sound.
- Ensure you are speaking directly into the front of the microphone.
- Check for any damage to the microphone cable or connectors.
- Excessive Background Noise:
- The PM-660U has a unidirectional pattern; ensure the microphone is pointed towards the speaker and away from noise sources.
- Verify the cable connections are balanced to minimize interference.
- Check for any nearby electronic devices causing interference.
If the problem persists after checking these points, contact your dealer or a qualified service technician.
8. Specifications
| Specification | Detail |
|---|---|
| Type | Moving coil microphone |
| Polar Pattern | Unidirectional |
| Rated Impedance | 600 Ω, Balanced |
| Rated Sensitivity | -58 dB (1 kHz, 0 dB=1 V/Pa) |
| Frequency Response | 100 Hz - 10 kHz |
| Output Cable | φ5.0 (φ0.2"), 4-conductor (2-shielded) cable (2.5 m (98.43")) without plug |
| Talk Switch | 1-push-to-talk switch, 1-locking lever, Short-off type |
| Remote Control | 500 mA or less at 30 V DC |
| Finish | Microphone head: Zinc plated steel wire, gray baked paint; Main unit: ABS resin, gray |
| Dimensions (WxHxD) | 100 x 215 x 150 mm (3.94" x 8.46" x 5.91") |
| Weight | 440 g (0.97 lb) (cord excluded) |
9. Warranty and Support
The TOA PM-660U Desktop Paging Microphone comes with a warranty. Please refer to the included warranty card for specific terms, conditions, and duration of coverage. Retain your proof of purchase for warranty claims.
For technical support, service, or inquiries regarding your product, please contact your authorized TOA dealer or the TOA customer service department. Contact information can typically be found on the TOA official website or on your warranty documentation.
