1. Introducció
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. Característiques del producte
- Patró polar unidireccional: 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.
- Sortida equilibrada: 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. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- TOA PM-660U Desktop Paging Microphone
- Targeta de garantia

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. Instruccions de configuració
Follow these steps to set up your TOA PM-660U microphone:
- Col·locació: Position the microphone on a stable, flat surface, such as a desk or podium, ensuring it is free from vibrations.
- Connexió per cable: 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.
- Potència del sistema: Once all connections are secure, power on your amplifier and audio system.
5. Instruccions de funcionament
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.
- Ajust de volum: Adjust the microphone input level on your amplifier or mixer to achieve the desired volume without distortion.
- Funció de control remot: 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. Manteniment
Un manteniment adequat garanteix la longevitat i el rendiment del micròfon:
- Neteja: 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.
- Emmagatzematge: When not in use for extended periods, store the microphone in a clean, dry environment, away from extreme temperatures and humidity.
- Cura del cable: Avoid kinking or sharply bending the microphone cable. Regularly inspect the cable for any signs of wear or damage.
- Evitar l'impacte: Protect the microphone from drops or strong impacts, which can damage internal components.
7. Solució De Problemes
If you encounter issues with your PM-660U microphone, refer to the following:
- Sense sortida de so:
- Ensure the microphone cable is correctly wired and securely connected to the ampentrada més viva.
- Verifiqueu el amplifier is powered on and the input channel for the microphone is selected and not muted.
- Comproveu el amplifier's volume and gain settings.
- Confirm the talk switch on the microphone is pressed or locked.
- So baix o distorsionat:
- Adjust the gain and volume levels on your amplifier. Too high a gain can cause distortion, too low can result in weak sound.
- Assegureu-vos que parleu directament a la part frontal del micròfon.
- Check for any damage to the microphone cable or connectors.
- Soroll de fons excessiu:
- 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. Especificacions
| Especificació | Detall |
|---|---|
| Tipus | Micròfon de bobina mòbil |
| Patró polar | Unidireccional |
| Impedància nominal | 600 Ω, Balanced |
| Sensibilitat nominal | -58 dB (1 kHz, 0 dB=1 V/Pa) |
| Resposta de freqüència | 100 Hz - 10 kHz |
| Cable de sortida | φ5.0 (φ0.2"), 4-conductor (2-shielded) cable (2.5 m (98.43")) without plug |
| Interruptor de conversa | 1-push-to-talk switch, 1-locking lever, Short-off type |
| Control remot | 500 mA or less at 30 V DC |
| Acabar | Microphone head: Zinc plated steel wire, gray baked paint; Main unit: ABS resin, gray |
| Dimensions (AxAxP) | 100 x 215 x 150 mm (3.94" x 8.46" x 5.91") |
| Pes | 440 g (0.97 lb) (cord excluded) |
9. Garantia i Suport
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 weblloc web o a la documentació de la garantia.





