The TOA PM-660U is a desktop paging microphone with a cardioid dynamic capsule, push-to-talk bar with lock lever and a 2.5m unterminated cable. It has a balanced 600 ohm output plus a separate switch contact linked to the talk switch for priority, chime or amplifier power control. The bare-end cable lets installers wire it to terminal blocks or any connector, which suits paging systems in schools, offices, factories and transport sites.
Cardioid
Dynamic
600 Ω
Balanced
Bare end
Cable
2.5 m
Cable
Features
Cardioid dynamic capsule with low handling noise
Push-to-talk switch with lock lever
Extra switch contact linked to the talk switch for priority, chime or power remote
600 ohm balanced output
2.5m 4-core cable: 2 shielded conductors for audio, 2 for the switch contact
Unterminated cable ends for terminal block or custom connector
Specifications
| Type | Desktop dynamic (moving coil) |
| Polar pattern | Cardioid |
| Output impedance | 600 Ω, balanced |
| Sensitivity | -58 dB (1 kHz, 0 dB = 1V/Pa) |
| Frequency response | 100 Hz to 10 kHz |
| Cable | 2 core shielded + 2 core, 2.5m |
| Termination | Unterminated (bare ends) |
| Talk switch | Push to talk with lock lever |
| Finish | Grey: steel wire head, ABS body |
| Dimensions (W x H x D) | 100 x 215 x 150 mm |
| Weight | 440 g |
| Remote switch | Leaf spring contact, linked to talk switch |





