General purpose types, for use in offices and other indoor areas. All may be used in a variety of systems, and in addition PM-660 and PM-660D interface directly with other Toa equipment.
PM-660
A dynamic desktop paging microphone with cardioid pick-up. Large push to talk switch (shorts microphone output when off) with locking facility. Low handling noise. Head is grey mesh, body is grey ABS.
Sensitivity: -58dBV (1kHz, 0dB=1V/Pa). Frequency response 100-10,000Hz . Dimensions: 100 x 215 x 150 (w x h x d)mm. Weight: 440g. Output impedance 600 ohms. Unbalanced output, 2.5m single-core shielded cable with two-pole, 6.35mm jack plug.
As PM-660, with the following exceptions: The switch has extra contact for operating external equipment. Balanced output, 2.5m cable, 4-conductor (included twin-core shielded), fitted with 5-pin DIN plug. This model interfaces directly with a variety of equipment, notably various of the TOA paging amplifiers, giving priority when making announcements and chimes, according to model.
As PM-660, except: Switch has extra switch contact, closing as mic is switched on, for operating external equipment. Balanced output, 2.5m cable, 4-conductor (included twin-core shielded). Cable has no connector fitted at free end.