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The 4188 Directional In-Ear Headset Microphone rejects side and background noise while creating higher separation from nearby sound sources. This improves the gain-to-feedback ratio and gives more channel control. Yet natural voice intelligibility is preserved. The mic also has very high SPL capabilities. You can both speak and sing into the mic with no hint of distortion.
Windscreens, a capsule protection cap, a cable clip (to anchor the cable to your clothing) and a color-coded cable clip (offering easy recognition of a specific headset among many) are included. The squared capsule provides a slim appearance on camera. The 4188 comes with Dual In-Ear earpieces and is available in black and beige.
- Directional pattern: Cardioid
- Principle of operation: Pressure gradient
- Cartridge type: Pre-polarized condenser
- Effective frequency response: 20 Hz - 20 kHz
- Frequency range, ±2 dB, Near field 2-3 cm (0.8 - 1.2 in): 100 Hz - 20 kHz with 3 dB soft boost at 8 - 20 kHz
- Sensitivity, nominal, ±3 dB at 1 kHz: 6 mV/Pa; -44 dB re. 1 V/Pa
- Equivalent noise level, A-weighted: Typ. 26 dB(A) re. 20 µPa (max. 28 dB(A))
- Equivalent noise level, ITU-R BS.468-4: Typ. 38 dB (max. 40 dB)
- Distortion, THD < 1%: 120 dB SPL RMS, 123 dB SPL peak
- Dynamic range: Typ. 97 dB
- Max. SPL, THD 10%: 144 dB SPL peak
- Rated output impedance: From MicroDot: 30 - 40 Ω. From DAD6001-BC: 100 Ω
- Cable drive capability: Up to 300 m (984 ft) with DAD6001-BC XLR Adapter
- Output balance principle: Signal balanced with DAD6001-BC XLR Adapter
- Common mode rejection ratio (CMRR): > 60 dB from 50 Hz to 15 kHz with DAD6001-BC XLR Adapter
- Power supply (for full performance): Min. 5 V to max. 50 V through DPA adapter for wireless systems
- Current consumption: Typ. 1.5 mA (microphone). 3.5 mA with DAD6001-BC XLR Adapter
- Connector: MicroDot
- Color: Black or beige
- Weight: Microphone boom: 0.8 g (0.03 oz). Earhook: 1.1 g (0.04 oz). Cabel: 6.6 g (0.23 oz). Total: 8.5 g (0.30 oz)
- Microphone diameter: 5.4 mm (0.21 in)
- Cable length: 1.3 m (4.3 ft)
- Cable color: Black or beige
- Cable diameter: 1.6 mm (0.06 in)
- Polarity: +V at MicroDot pin for positive sound pressure (and pin 2 on DAD6001-BC XLR adapter)
- Electromagnetic compatibility (EMC): Fully compatible
- Temperature range: -40°C to 45°C (-40°F to 113°F)
- Relative humidity (RH): Up to 90%