AKG CK 91 Condenser Microphone Cap (modular), for SE 300 B

Flat frequency response and a consistent cardioid polar pattern make the CK 91 an ideal tool for applications where good off-axis rejection is required.

The AKG Blue Line Series consists of a family of directional prepolarized condenser capsules and microphone configurations that are all compatible with a single powering/output assembly. Because of the general popularity of the cardioid pattern, the CK 91 cardioid capsule and SE 300 B powering/output assembly are sold as a single unit, the AKG Model C 391 B microphone. The remaining Blue Line capsules offer the following patterns: CK 92 (omnidirectional), CK 93 (hypercardioid), CK 94 (bidirectional), and CK 98 (shotgun capsule, high directivity). Three additional configurations are available: CK 97-O (omnidirectional lavalier), CK 97-C (cardioid lavalier), CK 97-CVR (cardioid gooseneck with bass roll-off). The Blue Line Series is suitable for studio, live sound, and a variety of speech reinforcement applications, where the facility for switching capsules is a major advantage. The positive Modulock™ bayonet design allows these changes to be made quickly. The Blue Line microphones exhibit accurate axial response and uniform pattern control. Self noise and maximum operating levels are exemplary, creating a very wide usable dynamic range for the most demanding operations. The SE 300 B powering/ output assembly provides for 10 dB of attenuation for operation at high sound pressure levels, as well as a 12 dB/octave low cut below 75 Hz for close usage. A complete line of optional accessories is available including an extension cable for operating the microphone capsule up to 10 ft. (3 meters) from the powering/output module.

Specifications (CK91):

• Polar pattern: cardioid
• Frequency range: 20 to 20,000 Hz
• Sensitivity: 10 mV/Pa (-40 dBV)
• Max. SPL: 132/142 dB (for 1% THD)
• Equivalent noise level (CCIR 468-3): 28 dB
• Equivalent noise level: 17 dB-A
• Signal/noise ratio (A-weighted): 77 dB
• Supply voltage: through SE 300 B
• Current consumption: through SE 300 B
• Connector: bayonet mount
• Finish: dark gray
• Dimensions: 19 dia. x 36/51 mm / 0.7 dia. x 1.4/2 in.
• Net weight: 35 g / 1.2 oz.
• Shipping weight: 200 g / 7.1 oz.
• Foam windscreen included