SE 300 B (AKG Blue Line)

http://www.akg.com

AKG Acoustics GmbH

Extremely compact, reliable circuitry Switchable bass cut filter Switchable 10-dB preattenuation pad Unique bayonet mount for capsules Universal phantom powering The SE 300 B operates from any 9 to 52 V phantom power supply. It incorporates a switchable 12 dB/octave bass cut filter at 75 Hz to eliminate footfall noise and a switchable 10-dB preattenuation pad for high-SPL sound sources. A transformerless output stage ensures pristine full-range audio and prevents low-frequency distortion. Stand adapter included. Available AKG Blue Line capsules: CK 91, CK 92, CK 93, CK 94, CK 98. See also the complete system C 391 B.

Specifications

2011 AKG Acoustics, Austria

2011-06-06

Frequency range Preattenuation pad Bass filter Impedance Recommended load impedance Supply voltage Powering Connector Finish Net weight Shipping weight
20 to 20,000 Hz 10 dB, switchable 12 dB/octave at 75 Hz <200 ohms >1000 ohms 9 to 52 V phantom power to DIN 45596 <2 mA 3-pin XLR dark gray 80 g / 2.8 oz. 375 g / 13.3 oz.

[IMAGE] [IMAGE] [IMAGE]

Engineers specifications
Microphone power supply module for the AKG Blue Line modular condenser microphone system. The power supply module shall be fitted with a bayonet mount for attaching eight different capsules with different polar patterns. Specifications: Electrical impedance: 200 ohms; switchable preattenuation pad: 10 dB; switchable bass cut filter: 12 dB/octave below 75 Hz. The microphone shall be capable of operating on phantom power to DIN 45596 at any voltage between 9 and 52 V. The case shall be 19 mm in diameter and 110 mm long. The maximum net weight of the module shall be 80 g (2.8 oz.).

Safety and Environment

1 Safety and Environment
Risk of damage Please make sure that the piece of equipment your microphone will be connected to fulfills the safety regulations in force in your country and is fitted with a ground lead.

ATTENTION

Environment
1) Remove the housing, electronics and cables before scrapping the equipment and dispose of all components in accordance with local waste disposal regulations. 2) The packaging can be recycled. Dispose of the packaging in a suitable collection system.

Description

2 Description
Introduction The C 391 B is a complete system that can be adapted in a very practical and low-cost manner to match the ever-changing requirements of the recording, broadcasting, sound reinforcement and film industries. The sound engineer can choose from a range of microphone modules that can be mixed and matched to create customised studio-quality microphones for every conceivable application. x x x x Special features x x x x x x x x x x x x SE 300 B powering/output module CK 91 microphone capsule with frequency-independent, cardioid polar pattern W 90 foam wind guard SA 60 universal tripod connector Robust design Minimal self noise Low power consumption Extremely reliable Low-impedance capsule connection Works without any problems up to 60C and 95% relative humidity Integrated, switchable 10 dB attenuation of gain (see fig.) Extremely durable Transformerless output stage Can by powered by any phantom powering device that complies with IEC 61938 Low distortion, even at high sound pressure levels Integrated bass filter with onset at approx. 100 Hz (see fig.)

Scope of supply

Optional accessories
A 91: Articulated joint with swivel range of 90 from the microphone axis B 18: Battery power supply for one microphone H 30: Elastic suspension with very effective insulation ST 45: Small table tripod ST 46: Small table tripod for the fitted capsules ST 305: Large table tripod with circular base and rubber lining to dampen structure-borne noise
The C 391 B system consists of a universal powering/output module (SE 300 B), several microphone capsules and readily-interchangeable accessories to suit all types of application. The microphone is virtually unaffected by handling noise due to its lightweight diaphragm. Additional features include the all-metal housing, which makes it less susceptible to HF interference, as well as its trouble-free operation in almost all situations due to its conservative and reliable design. The switchable 10 dB attenuation of the output signal is a major benefit at high sound pressure levels (i.e. high-powered sound sources) and when the input stages of amplifiers or mixing desks have lower maximum input levels. If this option was not available, these connected stages would be overamplified without being able to fully control the microphone. The switchable bass cut filter of the microphone also helps to suppress low-frequency distortion, such as rumble or wind noises, that cannot be controlled. The filter slope is approx. 12 dB/octave with the corner frequency (-3 dB point) lying at approx. 75 Hz.

Summary

Application

3 Application

Introduction The capsules are connected to the powering/output module by a simple bayonet mounting system. This allows the various capsules to be switched reliably, quickly and easily, even when they cannot be seen (e.g. in darkened rooms). The capsules and accessories can only be connected to the powering module in one position. A short, sharp twist to the right (listen out for a distinct "click") will secure the module in position (see fig.). The capsule is removed just as easily with a short twist to the left. Our modules and system accessories are designed for use in a whole range of user-specific applications. A brief selection of these are listed below.
CK 91 - Cardioid microphone capsule CK 92 - Omnidirectional microphone capsule
Classic microphone capsule with a cardioid polar pattern. Suitable for all applications where good sound attenuation (180) is required. Microphone with spherical polar pattern for use during live commentaries or for choir and solo performer recordings in either a recording or television studio. The capsule has no distance-dependent frequency curve (proximity effect) - normally an advantage in the applications mentioned above.
CK 93 - Hypercardioid microphone capsule
Similar to the CK 91 in design, but acoustically the CK 93 capsule provides a uniform hypercardioid polar pattern. The result is a higher front-to-random factor than with cardioid microphone capsules. This offers the advantage of better side separation in multi-channel recording work and increased feedback protection in sound reinforcement applications. This microphone capsule provides exceptionally good suppression of off-axis sounds and is consequently well-suited for interviews or recording dramas. The CK 94 can be used as part of an M/S combination in conjunction with a second microphone with a cardioid, hypercardioid or omnidirectional polar pattern. This miniature microphone can be used in any situation where the microphone must be as inconspicuous as possible, or even hidden completely out of sight. The microphone polar pattern ensures that recordings are free from overemphasised auditory source width and that sound reinforcement work can be completed with good feedback protection. This shotgun capsule represents a good compromise between the tube length and the resulting directivity. The capsule is best suited for sound recordings in the film and television industries, as well as for on-stage and outdoor applications. It can also be used anywhere where clear separation between individual instruments is needed without additional acoustic partitions.

CK 94 - Figure-eight microphone capsule
CK 97C - Miniature cardioid microphone capsule
CK 98 - Short shotgun capsule

Cleaning

4 Cleaning
Microphone Windscreen x x Use a soft cloth moistened with water to clean the surface of the microphone body. Wash the foam windscreen in soap suds. Do not use the windscreen before it has dried completely.

Specifications

5 Specifications
Electrical working principle: Acoustic working principle: Polar pattern: Frequency range: Field open loop gain (sensitivity) at 100 Hz: Electrical impedance: Recommended load impedance: Equivalent sound pressure level acc. to IEC 60268-4 (A-weighted): S/N ratio in re. to 1 Pa (A-weighted): Sound pressure limit: Operating conditions: Condenser microphone, self-polarised Pressure gradient receiver Cardioid 20 to 20,000 Hz 2 dB from nominal frequency curve 10 mV/Pa - 40 dBV in re. to 1V/Pa d 200 Ohm t 1000 Ohm 17 dB-A 77 dB 80 Pa (132 dB) for 1000 Hz - Temperature: -20C to +60C - Relative humidity: 99% (+20C), 95% (+60C) 9 to 52 V phantom power acc. to IEC 61938 d 2 mA Type XLR-3 acc. to IEC 19 mm x 147 mm approx. 115 g, net Brass Mat grey
Supply voltage: Current consumption: Connector: External dimensions: Weight: Housing material: Housing surface:
This product conforms to the standards listed in the Declaration of Conformity. To order a free copy of the Declaration of Conformity, visit http://www.akg.com or contact sales@akg.com.

Frequency Response Curve

Polar Pattern

Sommaire

1 Scurit et environnement.. 23 Environnement, cologie.. Description... 24 Introduction... 24 Fourniture... 24 Caractristiques particulires.. 24 Accessoires en option... 25 Description succincte... Utilisation... 27 Introduction... 27 CK 91 - Capsule de microphone cardiode.. 27 CK 92 - Capsule de microphone omnidirectionnelle. 28 CK 93 - Capsule de microphone hypercardiode. 28 CK 94 - Capsule de microphone bidirectionnelle.. 28 CK 97C - Capsule de microphone omnidirectionnelle miniature28 CK 98 - Capsule canon tube court.. Nettoyage... 29 Microphone... 29 Bonnette anti-vent... Caractristiques techniques... 30

Scurit et environnement