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The Electro-Voice Model CH15S
Condenser Hypercardioid System microphone

Electro-Voice CH15S

Electro-Voice CH15S

Description and Applications
The Model CH15S Condenser Hypercardioid Microphone is a breakthrough in hyper­cardioid microphone design. The CH15S microphone maintains an uncommonly uniform hypercardioid pattern throughout its entire operating frequency range (see Figure 3). This near-theoretical to theoretical hypercardioid performance throughout the frequency range coupled to the short length of the entire unit make it extremely versatile in numerous applications.

The CH15S offers wide response, precise control of polar characteristics, High output level, and an impressive directivity index. The extremely uniform directivity (with frequency) gives the microphone near-ideal rejection (off-axis sound has nearly identical response with on-axis sound, but is heavily attenuated).

Special considerations are made to achieve the highest directionality at even the lowest frequencies, Maximum attenuation occurs at 120 degrees off-axis where such rejection is often most useful.

Electro-Voice CH15S


  • Element: Condenser (electret)

  • Frequency Response: −10 dB at 70 Hz
    −6 dB at 100 Hz
    150 Hz to 13.5 kHz ±3 dB
    (See Figure 2)

  • Polar Pattern: (See Figure 3)

  • Impedance: 50 ohms

  • Output Level: −38 dB (0 dB = 1 mW/10 dynes/cm2)

  • EIA Sensitivity Rating: −130 dB

  • Maximum SPL: 136 dB
    (1% THD at 1 kHz open circuit)

  • S/N Ratio: 78 dB “A” weighted

  • Dynamic Range: 120 dB

  • Operating Voltage: AB or Phantom mode

  • Microphone Case: Steel

  • Microphone Element: Steel

  • Shock Mount: Steel and Neoprene

  • Windscreen: Acoustifoam™

  • Finish: Fawn beige micromatte

  • Dimensions: 99 mm (3.9 inches) long
    26.8 mm (1.06 inch) largest diameter

  • Weight: Microphone only, 161 g (5.7 ounces)
    System (with case) 290 g (10.2 ounces)

  • Connector: Switchcraft A3M

Figure 1
Figure 1 — Dimensions

Figure 2
Figure 2 — Frequency Response

Figure 3
Figure 3 — Polar Response

Figure 4
Figure 4 — Assembly (Parts List is shown in the downloadable specifications)

Figure 5

The CH15S hypercardioid system comes complete. Included in the package are not only the microphone, but the excellent 304 miniature shock mount and the versatile foam-lined utility storage case. The Model 316A windscreen is also included.

Electro-Voice CH15S

Text and diagrams are from Electro-Voice Model CH15S Specifications, Part No. 53588–840

Download the specifications for this mic.


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