akg c 577 wr desc-ription:

the akg c 577 wr and ck 77 wr models are extremely smooth omnidirectional microphones intended to be worn by actors and speakers who demand highest audio quality and complete freedom of movement on stage. they are suitable as well for vocal and instrumental pickup. frequency response extends from 20 hz to 20 khz, providing the operating engineer with an absoluy neutral sound that can be equalized as needed. both models employ a new water resistant capsule that can withstand the rigors of close placement to the actors’ skin under hot spotlights. finish is a dark matte in various colors, and both models can be easily concealed. a dual diaphragm transducer is used for added rejection of cable noise.

the ck 77 wr is intended for applications with wireless microphone bodypacks and with power supplies providing from 1.5 to 12 vdc. thec 577 wris intended for those applications using standard phantom powering.

available versions:

• c 577 wr (black)
• ck 77 wr l (3-pin mini xlr/black)
• ck 77 wr l/p (3-pin mini xlr/flesh tone)

features:

• slim profile and finish for unobtrusive wearing
• extended low and high frequency response
• omnidirectional pattern for natural speech quality
• resistant to humidity, perspiration and salts
• dual diaphragm transducer for rejection of cable noise
• compatible with all popular wireless systems (ck 77)

specifications:

• transducer type: pre-polarized condenser (electret)
• frequency response: 20 - 20 khz
• polar pattern: omnidirectional
• sensitivity at 1 khz: 8 mv/pa
• maximum spl (1% thd):133 db
• equivalent noise level: <26 db-a
• signal-to-noise ratio (a-weighted): >68 db
• electrical impedance: <400 ohms
• recommended load impedance: 2000 ohms
• supply voltage: c 577 wr: 9 - 52 vdc, ck 77 wr l & p: 1.5 to 12 vdc
• current consumption: <0.6 ma
• cable length: 10 feet (3 m)
• finish: matte black
• connectors: c 577 wr: xlr-m, ck 77 wr l & p: 3-pin mini xlr
• size: diameter 0.2 in. (5.5 mm), length .625 in. (14 mm)
• net weight: 0.014 oz. (4 g)
• shipping weight: 4.76 oz. (135 g)
• standard accessories: w 77 windscreen, h 40/1 clamp, h 41 clamp, pb77 adaptor
• optional accessories: b 18 e battery supply (c 577 wr)