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User manual Astatic, model CTM-55B

Manafacture: Astatic
File size: 187.14 kb
File name: c1056954-71fb-4d90-b14a-016a0c247fb0.pdf

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The CTM-55B is also available without a switch (CTM-55BLS) The CTM-55B utilizes the proprietary Astatic (I.N.R.-2™) Impact Noise Rejection system. A rubber shock mount isolates the transducer from the body, thus dramatically reducing cable, stand and handling noise. The need for any external shock-mounting device is virtually eliminated. The low-frequency response of the CTM-55B may be enhanced by increasing or decreasing the distance from the sound source. This phenomenon is technically known as "proximity effect". Normal or "flat" response is generated at a distance of 24 inches or more. However, as the distance to the sound source decreases, the bass sensitivity increases, providing a solid robust character. The CTM-55B is supplied complete with a zippered vinyl protective pouch and a microphone swivel clamp. 50.5mm (1.988) 166mm (6.535) CTM-55B/CTM-55BLS DYNAMIC SUPERCARDIOID MICROPHONE Astatic Quality All CTM-55B microphones are audio tested and inspected prior to shipment. Our absolute commitment to quality insures that Astatic microphones remain the best value in today's competitive industry. Operation and Maintenance The CTM-55B is one of the finest hand-held vocal microphones available at any price. Although it is incredibly durable, it should be stored in the provided zipper pouch to protect it from dust and dirt when not in use. If the front screen becomes soiled by dirt or residue, it may be cleaned using the following procedure: Unscrew the front screen assembly, remove the inside foam windscreen, wash using mild detergent, and let dry thoroughly. Follow the same method for the outer grille screen. To clean the mike housing, use a cloth dampened with isopropyl alcohol. Specifications SPECIFICATIONS FOR CTM-55B/CTM-55BLS Generating Element: Moving Coil Dynamic, Neodymium Magnet Polar Pattern: Supercardioid Frequency Response: 50 Hz - 16kHz Output Level: Open Circuit Voltage @ 1KHz: -54dBV (2mv) @ Pa Impedance: Low (200 ohms nominal) Phasing: Positive pressure on diaphragm generates a positive voltage on pin 2 relative to pin 3 Shock Mounting System: I.N.R.-2 (Impact Noise Rejection) Grille Screen: Woven Flex-Form TM (hardened steel) Case: Die Cast Zinc Alloy Finish: Durable Soft Feel, Non-Slip Midnight Black. Dimensions: See Drawing NET Weight: 285 grams (10 oz.) Included Accessories: 40-328...Microphone swivel clamp 40-375...Zippered vinyl pouch Optional Accessories: TBS-2...Non-reflective round base floor stand 40-109...Adjustable mic stand boom arm 40-352...25ft. broadcast quality cable terminated with professional 3 pin male/female connectors 40-350...50ft. broadcast quality cable 40-351..100ft. broadcast quality cable Architects' and Engineers Specifications The microphone shall be a dynamic supercardioid type, low impedance with a wide-range frequency response, uniform from 50 Hz to 16 kHz. Output level at 1 kHz shall be - 54dBV @ 1 Pa. The polar response shall show a minimum of -20 dB at 125 degrees between 150 Hz and 3 kHz. Th...