Colette Modular System MK -Microphone Capsules CMC -Microphone Amplifiers Table of Contents Colette Modular System page System Overview 2 CMC -- Microphone Amplifiers 3 Phantom Powering 5 Technical Specifications 7 Notes on Electromagnetic Compatibility 7 Block Diagram 8 MK -- Microphone Capsules 9 Capsule Selection 9 Attaching a Capsule 9 Basic Characteristics of Transducers 10 Suggested Capsules for Specific Applications 11 Pressure Transducers 12 Boundary Layer Microphones 13 Pressure Gradient Trans
GVC CUT KC Active Cable CMC 6, P12 / P48 inline attenuator low-cut filter DZC inline filters swivel MK microphone amplifiers attenuator Active Accessories microphone capsules Colette Modular System System Overview (Extract) LC 60, LC 120 low-cut filters CMC 5, P48 TR 200 KCg Active Table Stand CMC 3, P12 LP 40 U low-pass filter MDZ 10, MDZ 20 CMC 4, T12 . . . 20 capsules in all RC Active Tube e.g.
Microphone Amplifiers CMC -- Microphone Amplifiers Dear customer: Thank you for choosing SCHOEPS CMC (”Colette”) Series microphones. This is the most extensive and diverse modular microphone system in the world, offering the highest possible professional sound quality in an extremely wide range of practical configurations. A system overview is shown on page 2.
Microphone Amplifiers Types of Microphone Amplifiers powering which the user expects to encounter. Variants of these types are also available, offering different output levels and/or extended frequency range. Each amplifier works only with the specific type and voltage(s) of powering for which it is designed. Please note: The two amplifiers in a stereo pair of CMC microphones should be of the same type.
Microphone Amplifiers Phantom Powering greater. The increased output levels can help to raise a microphone's signal above the input noise level of the equipment to which it is connected, especially when sound levels are low to moderate. However, the overload limit of that equipment, and of the microphone itself, will also be reached 5 dB sooner.
Microphone Amplifiers Phantom Powering shield screen + phase Fig. 1 Input with transformer (or balanced, floating transformerless input) powering 2 (4) I/2 microphone - phase RS XLR-3connector I US RS I/2 3 (5) 1 cable input Imax.= 10 mA P12: US= 12V ± 1V; RS= 680 W*, Imax.= 15 mA with XLR-5 (stereo microphones) * see note in the text concerning tolerances P48: US= 48 V ± 4 V; RS= 6,8 kW*, + phase Fig.
Microphone Amplifiers Technical Specifications, Electromagnetic Compatibility Amplifier type CMC 6U / 6Uxt: CMC 5U: CMC 3U: CMC 4U: Powering Current consumption 12 V phantom 8 mA 48 V phantom 4 mA (automatic switchover) 48 V phantom 4 mA 12 V phantom 11 mA 12 V parallel 9 mA Impedance 25 Ohms 35 Ohms Low-cut frequency (-3 dB) 20 Hz 20 Hz 35 Ohms 20 Ohms 13 Ohms 30 Hz 30 Hz 30 Hz Polarity: Increasing sound pressure on the microphone's 0° axis produces a positive-going voltage at pin 2.
3 4 Middle ring (+60 V) Outer ring (+6,2 V) 3 1 Capsule MK -- DC/DC converter Impedance converter Regulator Output stage Nominal voltage gain: standard CMC amplifier: -2 dB, ”+5 dB” version: +3 dB. 2 3 1 4 3 Screen 1 +Phase 2 -Phase screen 1 +phase 2 -phase 3 XLR-3 connector 3 2 XLR-3 connector 1 Microphone cable Pin 1: screen (GND) Pin 2: +phase Pin 3: –phase Bottom view (as the pins are seen) 1 2 3 XLR-3 Connector ** R*s= 6.8 kΩ R*s= 6.
Capsules Capsule Selection MK -- Microphone Capsules Which is the Best Capsule for ... ? Only in rare cases can ”the” correct microphone be chosen unequivocally. The recording location, the positions of sound sources and the microphone, the atmosphere of the music or other program material and the desired effect must all be considered. Any absolute prescriptions would thus be of limited value at best. However, we would like to offer some ideas to guide the choice that must be made.
Capsules Basic Characteristics of Transducers All the wide variety of SCHOEPS capsules, without exception, are single-diaphragm electrostatic transducers. They fall into two general categories: pressure transducers and pressure gradient transducers. Many of our capsules combine the two principles of operation in various proportions, yielding patterns from wide cardioid through supercardioid; these capsules are classed as pressure gradient transducers by convention.
Speech / Speakers Capsules Suggested Capsules for Specific Applications Applications: Recommendations: On a lectern Conference recording TV speaker’s table MK 4 (cardioid) with close-speech guard B 5 D MK 4 (cardioid) with close-speech guard B 5 D MK 4 (cardioid), no popscreen required at distances greater than 0.
Capsules Pressure Transducers (Omnis) +10 0dB -10 -20 MK 2 MK 2H 20 50 100 200 500 1k 2k 5k 10k 20kHz 10k 20kHz Frequency response curve MK 2 + CMC 6 +10 0dB MK 2S MK 3 -10 -20 20 MK 2 MK 2H MK 2S MK 3 for free-field placement (close to the sound source) for use at moderate distance (at or near the reverberation radius*) all-purpose capsule for music and speech, also for use at moderate distance (at or near the reverberation radius*) for diffuse-field placement (distinctly beyond th
Capsules Boundary Layer Microphones +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz Frequency response curve BLM 3g, BLM 03Cg + CMC 6 BLM 3g from outer to inner: up to 2 kHz Polar diagram BLM 3g, BLM 03Cg 4 kHz 8 kHz 16 kHz BLM 03Cg – boundary layer capsules – hemispheric directional pattern – no coloration of off-axis sound Suggested applications: Music (orchestra, including pit orchestra); on-stage; speech.
Capsules Wide Cardioids / Open Cardioid +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz 10k 20kHz Frequency response curve MK 21 + CMC 6 MK 21 MK 21H +10 – wide cardioids – polar pattern very well maintained throughout the frequency range – a favorable compromise between omni (good low-frequency response) and cardioid (consistent directional pattern at all frequencies) 0dB -10 -20 20 50 100 200 500 1k 2k 5k Frequency response curve MK 21H + CMC 6 Suggested applications: MK 21
Capsules Cardioids +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz Frequency response curve MK 4 + CMC 6 MK 4 – standard cardioid with clear sound quality, free of coloration – all-purpose capsule for music and speech – our best-selling capsule type – 0° axis is at the tip of the capsule from outer to inner: up to 1 kHz 2 kHz 4 kHz 8 kHz 16 kHz Polar diagram MK 4 +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz Frequency response curve MK 4V + CMC 6 MK 4V from outer to
Capsules Supercardioids +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz Frequency response curve MK 41 + CMC 6 MK 41 – all-purpose capsule for speech and music recording of all kinds – well suited for use as the main microphones for stereo pickup and/or as ”spot” microphones – extended, smooth, well-balanced frequency response – often used for film and video sound – has distinct sonic and practical advantages over most shotgun microphones – highly consistent polar response – 0° axis is at
Capsules Figure-8 / Switchable Capsule +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz Frequency response curve MK 8 + CMC 6 MK 8 figure-8 (”bidirectional”) pattern clear sound quality, free of coloration for M/S and Blumlein stereo highly consistent frequency and polar response – response essentially free of off-axis peaks like a good ribbon microphone (but not as delicate physically) – lateral pickup from outer to inner: – – – – up to 2 kHz 4 kHz 8 kHz 16 kHz Polar diagram MK 8 +1
Capsules Cardioids for Close Pickup +10 Low-frequency attenuation of cardioids for close pickup MK 4S MK 40 MK 4 standard 0dB cardioid MK 4S and MK 40 -10 MK 4VXS MK 4A -20 20 50 100 200 500 1k The frequency response curves shown on these pages were obtained at the usual one-meter equivalent measuring distance. They show low-frequency rolloffs which will suppress low-frequency environmental noise.
Capsules Cardioids / Supercardioid for Close Pickup +10 0dB -10 -20 20 50 100 200 500 1k 2k 5k 10k 20kHz Frequency response curve MK 4A + CMC 6 MK 4A – for extremely close pickup (under 10 cm = less than 4") – deliberate 10 dB reduction in sensitivity – especially well suited for hand-held radio microphones made by AUDIO Ltd.
Capsules Specifications Specifications for Complete Microphones: MK -- Capsules with CMC 6 Microphone Amplifier Capsule Type Polar Pattern Frequency Range Sensitivity Equivalent Noise Level CCIR A-weighted Signal-to-Noise Ratio A-weighted Max. SPL (0.
Capsules Care and Maintenance / Possible Problems Care of Colette Series Condenser Microphone Capsules Please be careful to avoid placing capsules in a dusty environment. Keep them in their cases (or in the wood case of the microphone amplifier) when not in use, since any dust that gets inside the capsules can adversely affect their functioning. In combination with humidity it can lead to condensation and thus popping and crackling noises (often described as ”frying sounds”).
Capsules Possible Problems a loop of slack cable should be isolated and tied off so that it does not become another way for vibrations to reach the microphone. Unlike a wind screen, a shock mount will not affect the characteristics of a microphone. In many kinds of work it is well justified to use a shock mount ”by default.” Overload When dealing with problems of overload, it is useful to think of your recording equipment as a series of circuit stages.
Capsules Warranty / Declaration of Conformity Warranty Declaration of Conformity – CE-Mark We guarantee our products for a period of twenty-four months, except for batteries. The guarantee period begins on the date of purchase. The CE-mark guarantees that all products conform to relevant standards approved by the European Community. The products described in this User Guide comply with current, relevant standards when used with cables from SCHOEPS.
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