AKG CK94 High Performance Figure Eight Condenser Microphone Instruction Manual

AKG CK94 High Performance Figure Eight Condenser Microphone

Product Information

Specifications

• Model Numbers: CK91, CK92, CK93, CK94, CK98
• Standards: IEC 60268-4, IEC 61938
• Weight: N/A
• Dimensions: N/A
• Manufacturer: AKG

Product Usage Instructions

Step 1: Unboxing

Remove the product from the packaging and ensure that all necessary components are included.

Step 2: Assembly

Follow the assembly instructions provided in the user manual to properly set up the product.

Step 3: Connection

Connect the product to the appropriate audio equipment using the provided cables or connectors.

Step 4: Power On

Turn on the product using the power button or switch.

Step 5: Adjustments

Refer to the user manual for detailed instructions on adjusting the settings and parameters of the product.

Step 6: Usage

Start using the product according to your specific needs and requirements.

Step 7: Maintenance

Follow the maintenance instructions provided in the user manual to ensure the longevity and optimal performance of the product.

Frequently Asked Questions

Q: Where can I find optional accessories for this product?

A: For optional accessories, refer to the current AKG catalog or folder, or visit the official AKG website at www.akg.com. You can also contact your dealer for assistance.

Q: How can I obtain a copy of the Declaration of Conformity?

A: To order a free copy of the Declaration of Conformity, visit the official AKG website at www.akg.com or contact AKG sales via email at sales@akg.com.

Introduction

The C 390 System is a completely modular system which can be adapted in a very practical and economical way to the always changing requirements encountered in the Recording, Broadcast, Sound Reinforcement, and Motion Picture Industries. The sound engineer has a choice of interchangeable condenser microphone modules which can be mixed and mated in various combinations to create custom studio-quality microphones for any conceivable application.

Description

The C 390 System consists of a single universal powering/output module, eight different microphone heads and various interchangeable accessory parts to match a great variety of applications. An overview of the complete system is shown at the end of· this instruction booklet.

The following main features are provided:

• robust mechanical construction
• Low self-noise
• low power consumption
• high operating reliability
• low impedance capsule connections
• will operate up to 60° C and over 95 % relative humidity
• built-in attenuation switch with 0 and – 10 dB position (see fig. 1)
• extended long -life stability
• transformerless output stage
• to be powered from any standard phantom powering source (acc. to DIN 45596)
• low d1stort1on even at high sound pressure levels
• built-in bass- cut filter with onset at 100 Hz (see fig. 1)

The microphone features extremely low handling noise due to the low-mass diaphragm and smooth body finish, low r.f. interference due to screening and filtering technique, and will work under al_most any condition due to the conservative and reliable design.
The switchable attenuation of the output level by 10 dB is especially useful in connection with high sound pressure levels (when used in close proximity to high -energy sound sources) lmd usi_ng i_nput stages of amplifiers or mixing desks with limited input level capabilities. Otherwise, this associated equipment will overload before the maximum overload point of the microphone has been reached. The incorporated bass- cut filter reduces the risk of distortion at low frequencies. This feature is especially useful in combating wind noise or stage floor vibration. The slope of the bass-cut filter Is about 12 dB/octave with the cut-off point at about 75 Hz.

Changing Modules

All capsules may be attached to the powering module via a bayonet connection. Consequently, . a quick, safe, and easy change of modules even In dark rooms may be made. The capsules or accessory modules fit to the powering module in only one position. Once the two parts are put together only a short right· hand twist is required until the modul “clicks” into position(see figs. 2a, 2b). The capsule modules may be taken off from the powering module with a left· hand twist.

Applications:

The offered modules and the accessories of the system provide the user with the flexibility to work in a wide range of application areas. We can only list a limited selection because of space.
A) Selection of capsule modules to adjust to different acoustlcal situations:

CK 91 – Cardioid Microphone Capsule
A classic cardioid capsule suitable for all general purposes where a uniform front-to-back ratio is required.

CK 92 – Omnldlractlonal Microphone Capsule
This capsule is very suitable for chorus and soloist work in sound and Iv studios. Reporters may also benefit from the inherent lack of proximity effect.

CK 93 – Hypercardlold Microphone Capsule
The design and construction is quite similar to the CK 91 . The capsule is acoustically tuned to the hypercardioid polar response. The resulting higher d1rect1v1ty offers the advantage of better separation in multi· channel recording work or improved gain before feedback in sound reinforcement situations.

CK 94 – Figure-eight Microphone Capsule
This capsule provides for high rejection of sound from the side (±90° off- axis) and is consequently well suited for interviews and dramas. In connection with a second microphone with cardioid, hypercardioid, or omni -directional response. an MIS combination can be easily formed and used.

CK 97-0 – Miniature Omnl-dlrectlonal Capsule
A versatile miniature microphone of small dimensions with omni-directional response. The capsule may be used generally for voice applications, but may also be used to record music instruments.

CK 97 • C – Miniature Cardioid Microphone Capsule
This miniature microphone may be used wherever a microphone should not be seen in the recording scene. It has a uniform cardioid response and will · provide recordings without excessive portion of reverberation. It will also provide for additional gain before feedback in sound reinforcement situations.

CK 98 – Short Shotgun Microphone Capsule
This capsule presents a good compromise between required length of the tube and the resulting directivity. The result will justify the operation of this microphone capsule in quite different application areas such as film, tv, stage, and video work. It will also work well where high acoustical separation between different instruments is required without having to erect acoustical dividers.

Enclosed Accessories:

W 90 foam-type windscreen (with CK 91, CK 92, CK 93, and CK 94)
W 98 foam-type windscreen (with CK 98)

Optional Accessories

For optional accessories, refer to the current AKG catalog or folder, or visit www.akg.com. Your dealer will be glad to help.

Powering Technique:

The powering/output module may be powered in phantom power technique according to DIN 45596. These standards specify a positive voltage on the audio lines versus the screen of the audio cable of 12. 24 and 48 volts.

The following wiring methods are suggested :

1. Circuitry incorporating an input transformer with centre tap (ungrounded)

2. Circuitry incorporating an input transformer without centre tap (ungrounded)

3. In case where single ended (grounded) amplifier inputs, or where no input transformers are available, either capacitors or optional transformers have to be wired into the audio lines to prevent any current leakage into the input circuitry.

The components in the last figure may be easily and economically added to most existing input circuitries and would save the operation of external powering elements.

The following values for Rv (or 2 x Rv) are standardized:

Please note:

The resistors 2 x Rv have to be at least of the 0.5 % tolerance type to satisfy the symmetry requirements.

Cleaning Hints

All surfaces may be safely cleaned from time to time with methylated spirit or alcohol. The foam windscreen should be occasionally soaked in a non – aggressive detergent/water solution and will be ready for use after drying.

Specifications of the CK 90-capsules

CK 91

CK 92:

CK 93

CK 94

CK98

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.

AKG Acoustics GmbH
Laxenburger Straße 254, A-1230 Vienna/AUSTRIA, phone: (+43-1) 86654-0*
e-mail: sales@akg.com
For other products and distributors worldwide visit www.akg.com

References

• AKG
• Manual-Hub.com – Free PDF manuals!

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