Unidirectional Microphones

Our cardioid ECM microphone capsules are frequency-boosted to enhance voice and instrument clarity. With up to 83dB SNR, they deliver focused sound pickup, reducing background noise. Ideal for professional applications such as broadcasting, music systems, and OEM integration into pro audio systems.

Our Process

1. Inquiry

Share your product requirements and specifications.

2. Quotation

We recommend suitable products and provide a detailed quote.

3. Sampling

Samples are prepared according to your needs for approval.

4. Production

After approval, we start production and arrange shipping.

Directionality:
Omni-DirectionalUni-DirectionalBi-Directional
Diameter (Ø):
3mm4mm5.8mm6mm8mm9.7mm10mm14mm16mm25mm
Termination:
Surface MountPin TypeSolder Pads3 Solder PadsWire LeadsWire ConnectorSolder TabsWithout FET
25-36 of 71 Products
4mm Headset Microphone Capsule for Harman Headsets

4mm Headset Microphone Capsule for Harman Headsets

  • Model: ECM-B4017UL44-24742
  • Dimensions: 4 × 1.7 mm
  • Sensitivity: -44 dB ± 2
4mm Low Noise Electret Microphone Capsule with Pins

4mm Low Noise Electret Microphone Capsule with Pins

  • Model: ECM-B4015UP38-YL
  • Dimensions: 4 × 1.5 mm
  • Sensitivity: -38 dB ± 2
4mm Unidirectional Electret Microphone Capsule with Pins

4mm Unidirectional Electret Microphone Capsule with Pins

  • Model: ECM-B4015UP38-YL
  • Dimensions: 4 × 1.5 mm
  • Sensitivity: -38 dB ± 2
6mm Electret Instrument Microphone Capsule with Pins

6mm Electret Instrument Microphone Capsule with Pins

  • Model: ECM-B6027UP-47
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -47 dB ± 2
6mm Electret Microphone Capsule for Headset Mics

6mm Electret Microphone Capsule for Headset Mics

  • Model: ECM-B6050UL-B
  • Dimensions: 6 × 5 mm
  • Sensitivity: -46 dB ± 2
6mm Unidirectional Microphone Capsule for Lavalier and Conference Mics

6mm Unidirectional Microphone Capsule for Lavalier and Conference Mics

  • Model: ECM-B6027UL29-25674
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -29 dB ± 2
9.7mm Cardioid Dual-Chamber Microphone Capsule for KTV Karaoke

9.7mm Cardioid Dual-Chamber Microphone Capsule for KTV Karaoke

  • Model: ECM-F9750UL-48
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -48 dB ± 1
9.7mm Cardioid Electret Mic Capsule for Professional Headsets

9.7mm Cardioid Electret Mic Capsule for Professional Headsets

  • Model: ECM-B9750UL38-956U
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -38 dB ± 2
9.7mm Cardioid Electret Microphone for Automotive Use

9.7mm Cardioid Electret Microphone for Automotive Use

  • Model: ECM-B9750UP-45
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -45 dB ± 2
9.7mm Cardioid Electret Microphone Insert for KTV Karaoke

9.7mm Cardioid Electret Microphone Insert for KTV Karaoke

  • Model: ECM-F9750UL-47
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -47 dB ± 2
9.7mm Dual Damping Unidirectional Electret Microphone Element

9.7mm Dual Damping Unidirectional Electret Microphone Element

  • Model: ECM-B9745UL47-647
  • Dimensions: 9.7 × 4.5 mm
  • Sensitivity: -47 dB ± 2
9.7mm Electret Condenser Microphone Element for Headset Microphones

9.7mm Electret Condenser Microphone Element for Headset Microphones

  • Model: ECM-B9750MU48-3169
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -48 dB ± 2
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FAQs

Unidirectional microphones, also called cardioid microphones, focus pickup in the front direction, effectively reducing background noise. They are ideal for walkie-talkies, intercom systems, in-car voice input, conference microphones, and other scenarios that require clear voice capture.

Unidirectional microphones use front and rear sound holes to create a pressure gradient, picking up sound mainly from one direction. Omnidirectional microphones pick up sound evenly from all directions. Unidirectional mics work better in noisy environments, while omnidirectional mics are better for capturing ambient sounds.

ECM-B9750UP-45, a 9.7mm cardioid microphone designed for car stereo systems, effectively isolates noise, ideal for Bluetooth hands-free and voice control.

25mm cardioid microphones with high SNR, perfect for professional recording and live streaming:

Unidirectional microphones rely on front and rear sound holes to create the pressure gradient needed for directionality. Sealing these holes completely (to achieve IP67 waterproofing) would impair their function.
For more details, see: Waterproof Principles for Omnidirectional and Unidirectional Microphones
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