Specification:

Model: k87 Large Diaphragm Capsule

34mm 24k gold capsule large diaphragm microphone cartridge core recording condenser mic capsule

Specification:

Large Diaphragms Cartridge/cores:

• Backplate Diameter: 34mm

• Gold-Sputtered Diameter: 26mm

• Wiring Method: Center Lead

• Frequency Response: 20Hz – 20kHz

• Polar Pattern: Cardioid

• Reference Sensitivity: -30dB

• Mounting Method: Four side holes (45° / 60°)

• Recommended Polarization Voltage: +48V

• Maximum Non-Pull-In Voltage: +60V

Application:

Used for making condenser microphones and electronic tube microphones

Important Usage Notes for Gold‑Plated Capsules:

Do not touch the internal diaphragm. Handle only by the metal backplate.

Protect from moisture. When not in use, store the microphone in a sealed container in a relatively dry environment.

A preamp circuit board is required. The capsule needs a polarization voltage between 3V‑70V provided by a preamp board. Connecting it directly without a preamp will produce no sound.

Packing:

1pc 34mm capsule with box packing ( we have two styles: 1 side and 2 sides styles, pls choose the right one when order)

Application:

Accessories for DIY condenser microphone, repair microphone, or upgrade mic.

Click here to order “48v Phantom Power“.

Click here to order “Installed Microphone”

Welcome to a store built on 15 years of audio engineering expertise. Every product—from our capsules to our circuits—is designed, tested, and perfected by me, a senior engineer, to deliver pro-level sound you can trust. Ready for more? Explore our full range or reach out for custom solutions—we’re here to help you sound better.