CAD Audio 651 Small-Format Omnidirectional Dynamic Palmheld Microphone with Talk Switch

The Astatic 651 is a small-format squeeze-to-talk, dynamic microphone for critical communications applications. The 651 has a tailored frequency response providing clear transmission and maximum intelligibility of speech. The housing is built to withstand rough mechanical impact while the transducer resists atmospheric extremes. The 651 has a simple to operate DPDT long-life, trouble-free, leaf switch. It has a low-impedance output and is factory wired normally open. The 651 may be rewired in the field if a line shorting function is desired.

Features

• For commercial public-address and paging applications as well as security, emergency and safety
• Small size for inclusion into life-safety systems or other paging stations
• Omnidirectional for forgiving pick-up of users that may not have experience with microphones
• Low impedance (600 ohms) for long cable runs and hum resistance
• Rugged polyester mic element resists effects of extreme temperature, moisture, acids, alkalines and solvents
• Durable large-gauge wire grille
• Molded plastic that is resistant to high impact
• Permanently-attached 6ft (1.8m), heavy-duty, 4-conductor coiled cord with stripped and tinned ends

Specifications

• Operating Principle: Moving Coil Dynamic
• Polar Pattern: Omnidirectional
• Frequency Response: 500Hz - 8KHz
• Sensitivity: -49dBV (3.6mV) @ 1Pa
• Impedance: 600 ohms
• Cable: 6ft (1.8m) extended, four-conductor, two-conductor shielded, coiled
• Switch: DPDT momentary leaf
• Case: Impact-resistant plastic
• Dimensions: See spec sheet (pdf)
• Net Weight [Mass]: 4.9oz [139g]
• Packaged Weight [Mass]: 8.0oz [227g]
• RF Immunity: Meets or exceeds EN55103-2, E1, E2, E3 and E4.
• RoHS Compliant