AKG C451 B Small-Diaphragm Condenser Microphone

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Product Highlights

  • Cardioid Polar Pattern
  • Transformerless Output Stage
  • Switchable 10 dB & 20 dB Pad
  • Low-Cut Filter at 75 Hz and 150 Hz
  • Low-Noise Preamp Electronics
  • 117 dB Dynamic Range, 155 dB SPL
  • All-Metal Body for RF Rejection
  • Windscreen, Stand Adapter, Bag

AKG C451 B Overview

The C451 B Small-Diaphragm Condenser Microphone from AKG is well suited to record drums, percussions, acoustic guitars and strings in the studio and in live situations. It is engineered to approximate the sound of its predecessor, the C451 EB + CK1, but with its redesigned hand-crafted fixed capsule (which eliminates the mechanical problems associated with the original modular design), and its low-noise preamp electronics, this microphone delivers accurate transients for a bright and detailed sound.

With a sound-pressure level capability of 155 dB, a dynamic range of 117 dB, a switchable pad and a bass-cut filter, and a transformerless output stage, the C451 B allows for close-miking of high-energy sound sources with low distortion and flat frequency response. The rugged all-metal body ensures efficient rejection of RF interference and makes this microphone well suited to withstand the rigors of studio and stage handling.

The C451 B comes with a stand adapter, a windscreen and a microphone bag.

  • Hand-crafted fixed capsule 
  • Low-noise preamp electronics
  • Sound pressure level capability of 155 dB SPL with 117 dB dynamic range
  • Transformerless output stage for low distortion and flat frequency response
  • Switchable pre-attenuation pad (10 dB & 20 dB)
  • Switchable bass-cut filter to reduce wind noise and proximity effect (75 Hz & 150 Hz)
  • All-metal body provides efficient protection from RF interference
  • Rugged construction
  • Windscreen, stand adapter and microphone bag included
More Information
Manufacturer AKG
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AKG C451 B Specs

Analog Performance
Polar PatternCardioid
Frequency Range20 Hz to 20 kHz
Signal to Noise Ratio76 dB A-Weighted
Equivalent Noise Level18 dB A-Weighted
Maximum SPL135 dB SPL
Pad-10 dB
-20 dB
Impedance200 Ohms
Load Impedance1000 Ohms
Sensitivity9 mV/Pa
Low-Cut Filter12 dB/Octave @ 75 Hz
12 dB/Octave @ 150 Hz
Dynamic Range117 dB A-Weighted
Output Connectors1 x 3-Pin XLR
Operating Current Consumption2.0 mA
Operating Voltage9 to 52 V
Operating Temperature-4.00 to 140.00°F / -20 to 60°C
Length6.30" / 160 mm
Diameter0.75" / 19 mm
Weight4.41 oz / 125 g
Packaging Info
Package Weight1.64 lb
Box Dimensions (LxWxH)11.9 x 5.9 x 3.5"
AKG C451 B Small-Diaphragm Condenser Microphone 
AKG C451 B Small-Diaphragm Condenser Microphone