RK-87 Microphone Capsule



The RK-87 is a dual-backplate, dual-membrane condenser mic capsule based on the Neumann K87.

The RK-87 is a 34mm capsule and utilizes 3-micron mylar, sputtered with gold. It supports both multi-pattern and cardiod-only condenser microphones.

The RK-87 mic capsule is a Chinese OEM replica of the classic Neumann K87. It features a dual-backplate construction and is made with 3-micron gold-sputtered mylar.

The RK-87 supports both cardiod-only and multi-pattern microphone circuits.

What’s Included:

  • RK-87 microphone capsule
  • Mounting post and saddle
  • Backplate termination wire
  • Screws for the saddle and termination wire

Technical Specifications

  • Polar pattern: multi-directional (cardiod, figure 8, omni)
  • Frequency response: 20Hz – 20kHz
  • Sensitivity: -36dB ±2dB (0dB = 1V/Pa at 1kHz)
  • Output impedance: 200Ω ±30% at 1kHz
  • Max Input SPL: 140dB at 1kHz = 1% THD
  • Capacitance: 54±4pF
  • Double-sided
  • 34mm diameter x 13.4mm

Additional information

Weight .25 lbs
Dimensions 2.5 × 2 × .75 in