Superlux Cardioid Condenser Boundary Microphone – Black E303B

Superlux Cardioid Condenser Boundary Microphone – Black E303B

The Superlux E303B Boundary Microphone is a professional cardioid condenser microphone designed for conference rooms, meetings, presentations, recording, and other applications requiring clear and focused voice pickup. Its low-profile boundary design allows convenient placement on tables and other flat surfaces, while the cardioid polar pattern helps minimize unwanted sound from surrounding areas.

Key Features

Cardioid Condenser Design

The Superlux E303B uses a back electret condenser element with a cardioid polar pattern. It focuses on sound from the front while helping reduce unwanted ambient noise, making it suitable for meetings, conferences, presentations, and recording applications.

Wide Frequency Response

With a 30–18,000 Hz frequency response, the microphone captures a broad range of speech and audio frequencies, providing clear and natural sound reproduction.

High Sensitivity and Low Noise

The microphone offers -39 dB/V sensitivity (11.2 mV/Pa) at 1000 Hz with ±3 dB tolerance. Its equivalent noise level of less than 24 dB (A-weighted) helps provide clean audio for professional applications.

High SPL Handling

With a maximum SPL of 127 dB at 1000 Hz, the E303B can handle relatively loud sound sources while maintaining reliable audio performance.

Wide Dynamic Range

The 103 dB dynamic range provides excellent capability for capturing both softer speech and louder audio without easily introducing distortion.

Phantom Power

The Superlux E303B operates with 9–52V DC phantom power, making it compatible with suitable professional mixers, audio interfaces, and other phantom-powered equipment.

Long 33-Foot Cable

The microphone includes a 33-foot TA3F to XLRM cable, providing additional flexibility when positioning the microphone in conference rooms, meeting spaces, studios, and professional installations.

Specifications

• Model: Superlux E303B
• Type: Boundary Condenser Microphone
• Element: Back Electret Condenser
• Polar Pattern: Cardioid
• Frequency Response: 30–18,000 Hz
• Sensitivity: -39 dB/V (11.2 mV/Pa) at 1000 Hz ±3 dB
• Equivalent Noise: <24 dB (A-weighted)
• Impedance: 600 Ohms
• Maximum SPL: 127 dB at 1000 Hz, THD = 1%
• Dynamic Range: 103 dB (1000 Ohm load)
• Phantom Power: 9–52V DC
• Cable: 33 ft TA3F / XLRM
• Connector: 3-Pin Male XLR
• Finish: Black
• Weight: 6.30 oz
• Compliance: RoHS compliant

Applications

The Superlux E303B Boundary Microphone is suitable for conference rooms, business meetings, presentations, seminars, recording applications, discussion tables, and professional audio setups. Its compact boundary design makes it convenient for tabletop placement while its cardioid pickup helps keep speech focused and intelligible.

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