AKG C451 Reference Small-Diaphragm Condensor Microphone

The AKG C451 is a small diaphragm condenser microphone with a heritage dating back to the late 1960s, recognised for its precision engineering and long standing role in professional recording studios. The current C451 B continues this lineage as the modern production version.

AKG C451 Reference Small-Diaphragm Condensor Microphone Details

The AKG C451 B is a reference small diaphragm condenser microphone designed for professional studio recording. It is engineered to deliver the same acoustical behaviour as the original C451 EB paired with the CK1 capsule, first introduced in 1969.

The microphone employs a handcrafted capsule and transformerless preamplifier design, using surface mount technology to achieve low distortion, reduced weight, and high reliability. A high overload capability allows the microphone to handle high sound pressure levels without distortion, while an integrated high pass filter provides effective control of low frequency rumble and wind noise.

The AKG C451 B is phantom powered and features a fixed cardioid polar pattern, making it suitable for a wide range of close miking and detailed capture applications within the recording studio.

AKG C451 Reference Small-Diaphragm Condensor Microphone Heritage

  • Introduced in 1969

    designated as AKG C451 EB with CK1 capsule

    Modular small diaphragm condenser system using the CK1 capsule and discrete electronics, forming the basis of the C451 design architecture.

    The AKG C451 EB paired with the CK1 capsule was introduced in 1969 and quickly became a widely adopted studio microphone due to its compact form, consistent performance, and precise capture characteristics. Its modular construction allowed the use of different capsules and accessories, establishing the C451 system as a flexible and enduring studio standard.

Specifications

Released in: 1969
Made in: Austria
  • Microphone Type: FET condenser
  • Capsule Type: Small diaphragm condenser
  • Polar Pattern: Cardioid
  • Frequency Response: 20Hz to 20000Hz
  • Equivalent Noise Level: 18 dB-A
  • Sensitivity: 9 mV/Pa
  • Signal To Noise Ratio: 76 dB-A
  • Preattenuation Pad: -10 dB, -20 dB
  • Bass Cut Filter: 75Hz, 150Hz
  • Powering: 9V to 52V phantom power
  • Output Connector: Balanced XLR, 3-pin male
  • Output Impedance: 200 Ohms
  • Recommended Load Impedance: 1000 Ohms
  • Dimensions: 160mm x 19mm x 19mm
  • Weight: 125 g
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AKG C451 Reference Small-Diaphragm Condensor Microphone Used on these Recordings

Eleanor Rigby

The Beatles

Rumours

Fleetwood Mac

Barracuda

Heart

Oliver’s Army

Elvis Costello

Jessie’s Girl

Rick Sprigfield

Total Eclipse of the Heart

Bonnie Tyler

Purple Rain

Prince

Money For Nothing

Dire Straits

Sledgehammer

Peter Gabriel

Need You Tonight

INXS

After Ours

Ann Hampton Callaway

This Love

Maroon 5

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The details provided above are drawn from historical documents like advertising brochures or user manuals. They’re shared without bias or review. This info is given solely for your consideration, helping you gauge its usefulness to you.

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