TOA PM-660U Desktop Paging Microphone

TOA’s PM-660U is an elegantly styled, compact desk microphone for use in public address, paging and radio communication systems. Ideal applications include restaurants, offices, warehouses, transportation terminals, dispatch centers and entertainment facilities. Its smooth, natural response provides high quality voice reproduction and excellent articulation to enhance the overall performance of your system. Compact and lightweight, the PM-660U requires a minimum of desk or counter space and is easy to handle.

To significantly reduce background noise and feedback, the PM-660U features a cardioid pick-up pattern that is uniform over the entire frequency range. The dynamic microphone element has a 600Ω balanced output and the microphone is supplied with an attached 8.2’, four-conductor cable with stripped wire ends. Two conductors are shielded and are dedicated for the microphone signal. The other two unshielded conductors connect to an auxiliary, normally-open switch contact, used to activate external muting, priority or relay control circuits. The auxiliary switch contact is closed by using the push-to-talk bar, which also turns on the microphone by opening a second set of contacts that normally short the mic element. A locking lever is provided to keep the push-to-talk bar in the “on” position when the microphone must be kept open for an extended period.

A wire mesh grille protects the mic element and incorporates an internal wind screen to reduce popping noises from speech. Ideal for desktop or shelf mounting, the integral microphone stand/base is fitted with four, rubber isolated feet to reduce mechanical noise pick-up. Constructed of high impact ABS resin, the microphone is finished in a neutral dark gray with a prominent, orange push-to-talk button.

Designed for paging calls and general announcements, the PM-660U desk-top microphone comes with a large talk switch and a lock lever for easy and convenient operation. Its robust anti-vibration construction and balanced output render the microphone resistive to noise. In addition, the PM-660U microphone is equipped with a remote control switch (interlocked with the talk switch) for amplifier power on/off operation or chime activation.

Features

• Sleek, modern design fits today’s high tech workstations
• Dynamic microphone element with a 600Ω balanced output
• Prominent press-to-talk bar with convenient locking lever
• Auxiliary switch contact for mute or relay circuits
• Cardioid pattern with excellent ambient noise rejection

Specifications

• Directivity: Unidirectional, cardioid pattern
• Sensitivity: (1kHz) -58dB
• Frequency Response: 100Hz - 10kHz
• Microphone Element: Dynamic (moving coil)
• Impedance: 600Ω, balanced
• Push-To-Talk Bar:
  • Microphone Normally closed (mic element shorted)
  • Auxiliary Switch Contact Normally open (dry contact)
• Locking Lever: Locks push-to-talk bar in “on” position
• Cable Length: Attached 8.2' with stripped, tinned wire ends
• Cable Type: 2-C shielded (audio), 2-C (aux switch)
• Microphone Head Finish: Zinc plated steel mesh, gray baked paint
• Stand / Base Finish: Gray ABS Resin
• Dimensions (W x H x D): 3.9" x 8.5" x 5.9"
• Weight: 0.97lbs.