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 60 KC Active Cable CMC 6, P12 / P48 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 inline attenuator low-cut filter PAD inline filters swivel MK microphone amplifiers attenuator Active Accessories microphone capsules Colette Modular System System Overview (Extract) MDZ 10, MDZ 20 . . . 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 ing 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. For critical applications, pairs of capsules can be selected at the factory for precisely matched sensitivity and frequency response. (A small extra fee is charged for this service.
Microphone Amplifiers Phantom Powering and air motion. However, when using pressure (omnidirectional) transducers, particularly with digital recording, it can be desirable to pick up frequencies even lower than 20 - 30 Hz. The special technology of the CMC microphone amplifiers makes this possible; on request we can deliver microphone amplifiers with response extending as low as 3 Hz. For live recording, however, some caution is advised with respect to infrasonics.
Microphone Amplifiers Phantom Powering screen shield + phase Fig. 1 Input with transformer (or balanced, floating transformerless input) powering 2 (4) I/2 microphone - phase XLR-3connector RS I US I/2 3 (5) RS 1 cable input Imax.= 10 mA P12: US= 12V ± 1V; RS= 680 W*, Imax.= 15 mA P48: US= 48 V ± 4 V; RS= 6,8 kW*, * see note in the text concerning tolerances (4), (5) only with XLR-5 connectors of stereo inputs + phase Fig.
Microphone Amplifiers Technical Specifications, Electromagnetic Compatibility Amplifier type CMC 6U / 6Uxt: CMC 5U: CMC 3U: 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 Impedance 25 Ohms 35 Ohms Low-cut frequency (-3 dB) 20 Hz 20 Hz 35 Ohms 20 Ohms 30 Hz 30 Hz Polarity: Increasing sound pressure on the microphone's 0° axis produces a positive-going voltage at pin 2.
2 3 4 Inner ring (0 V) Middle ring (+60 V) Outer ring (+6,2 V) 2 3 1 4 1 Impedance converter Center contact (∼) 3 1 Active Accessories: e.g. cable KC -- or tube RC -- 3 1 Capsule MK -4 DC/DC converter Impedance converter Regulator Output stage Nominal voltage gain: standard CMC amplifier: -2 dB, ”+5 dB” version: +3 dB.
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 / Vocals Capsules Suggested Capsules for Specific Applications Appliations: Recommendations: On a lectern Conference recording MK 4 (cardioid) with B 5 D close-speech guard MK 4 (cardioid) with B 5 D close-speech guard; for close pickup < 20 cm: cardioid with bass rolloff MK 4P; for close pickup < 10 cm: cardioid with bass rolloff MK 4XP MK 4 (cardioid) without pop filter at a distance exceeding 40 cm MK 4 with PR 120 SV pop filter; also SCHOEPS V4 U MK 4 (cardioid) or boundary-layer
Capsules Pressure Transducers (Omnis) +10 0dB -10 -20 20 MK 2 MK 2H 50 100 200 500 1k 2k 5k 10k 20kHz 10k 20kHz Frequency response curve MK 2 + CMC 6 +10 0dB -10 MK 2S MK 2XS -20 20 50 100 200 500 1k 2k 5k Frequency response curve MK 2H + CMC 6 MK 2 for free-field placement (close to the sound source) MK 2H for use at moderate distance (at or near the reverberation radius*) MK 2S all-purpose capsule for music and speech, also for use at moderate distance (at or near the reverber
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 MK 21 MK 21H – 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) 50 100 200 500 1k 2k 5k 10k 20kHz 10k 20kHz Frequency response curve MK 21 + CMC 6 +10 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 – cardioid with
Supercardioids +10 0dB -10 -20 Capsules 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 +10
Capsules Cardioids for Close Pickup MK 4 MK 4(V)P MK 4(V)XP MK 4VP MK 4P Low-frequency response curves of the two microphone types (P and XP) compared to the standard MK 4 (measured at a 60 cm equivalent distance). from outer to inner: MK 4XP MK 4VXP When a directional microphone is used close to a sound source, its lowfrequency response increases greatly.
Cardioids for Close Pickup Capsules MK 4P – cardioid pattern – for pickup of speech or music at close range (under 20 cm) – moderate attenuation of low frequencies Frequency response curve MK 4P MK 4VP – cardioid pattern, sideadressed – for pickup of speech or music at close range (under 20 cm), otherwise the sound may become “thin“ – moderate low frequency attenuation Frequency response curve MK 4VP MK 4XP – cardioid pattern – for pickup of speech or music at close range (under 10cm) – considerable a
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.
Subject to change without notice. Not responsible for errors or omissions. 151003 SCHOEPS GmbH Spitalstrasse 20 D-76227 Karlsruhe (Durlach) Germany Tel: +49 721 943 20-0 Fax: +49 721 943 2050 Technik www.schoeps.de mailbox@schoeps.
