OWNER'S MANUAL LANGEVIN CR-3A FET CONDENSOR MICROPHONE MANLEY LABORATORIES, INC. MANUFACTURED BY: MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA. 91710 USA TEL: (909) 627-4256 FAX: (909) 628-2482 email:emanley@netcom.com http://www.manleylabs.
CONTENTS INTRODUCTION TIPS and TECHNIQUES SPECIFICATIONS WARRANTY 2 3 5 6 INTRODUCTION Thank You for purchasing the Langevin CR-3A. This microphone has an interesting evolution story. It was originally built in China for "ASC" until Manley purchased the rights to it when ASC quit the microphone business. Manley was impressed by a few of the mics but was not satisfied with the consistency. This required a visit to China to tighten quality control for both capsule and circuit boards.
TIPS AND TECHNIQUES Freelance engineers can safely skip this page - it is more for those less familiar with condensor mics. Let us start at the beginning. The box the mic was shipped in also has three other items. There are two varieties of mounts and a foam pop filter. The smaller mount we call a "Hard Mount"and is for situations where space is cramped or TV where a certain appearance is needed.
A few last tips regarding condensor mics. The capsule is a plastic membrane just a fraction of an inch fom a back plate. These two pieces are charged with 40 volts between them. When the membrane vibrates that 40 volts changes a few hundredths of a volt and that is the signal that gets amplified inside the mic. If moisture gets into that space between the membrane and back plate it can short out the 40 volts and cause the mic to lose sound - until it drys. Remember, that the human voice is quite moist.
CR-3A Specifications Acoustical Operating Principle: Polar Pattern: Difference between 0O and 180 O : Frequency Range: Source Impedance: Minimum Load Impedance: Maximum SPL for 0.5% THD at 1KHz: with -10dB sensitivity reduction: High Pass Filter: S/N ratio (DIN 45-590) Ref.
WARRANTY REGISTRATION We ask that you please fill out this registration form and send the bottom half to: MANLEY LABORATORIES REGISTRATION DEPARTMENT 13880 MAGNOLIA AVE. CHINO CA, 91710 Registration entitles you to product support, full warranty benefits, and notice of product enhancements and upgrades. You MUST complete and return the following to validate your warranty and registration. Thank you again for choosing to use Manley Laboratories.
