Wide Heart-Shaped Mic for Instruments & Group Vocals

Wide heart-shaped back-electret condenser microphone for acoustic instrument recording

73dB SNR balanced output microphone key features diagram

ECM-B1465UL40-26306 mechanical dimensions and outline drawing

Wide heart-shaped microphone typical frequency response curve chart

ECMIC microphones 12,000 m² factory with 6M+ units monthly output and ISO/CE certifications

ECMIC microphones automated production line overview, showing assembly and quality control process

Engineered for studio-quality indoor audio capture, this wide heart-shaped back-electret condenser microphone delivers clean, natural sound with 73dB SNR and 125dB SPL handling. Its balanced source-follower output ensures interference rejection, making it ideal for wood guitar, violin, drum overheads, roundtable interviews, and multi-performer sing-along sessions.

Model: ECM-B1465UL40-26306
Dimensions: 14 × 6.5 mm
Directivity: Unidirectional
Sensitivity: -40 dB ± 2
Impedance: 2 kΩ
S/N Ratio: 73 dB
Max SPL: 125 dB
Operating Voltage: 4.5 Vdc
Frequency Response: 50 Hz ~ 20 kHz
Current Consumption: 500 μA

Request Information / Sample

Tell us your project stage. Our engineering team will respond accordingly.

Lead Time

Samples: 1–3 weeks
Mass production: 2–4 weeks

Customization

Application-based engineering support
Structure / sensitivity / acoustic tuning

MOQ

3,000–5,000 pcs
Per model / per production batch

Certification

RoHS & UL compliant
Industrial reliability assured

Overview

Designed specifically for indoor acoustic recording and live group performance capture, this wide heart-shaped back-electret condenser microphone delivers natural, transparent sound with excellent noise immunity. Featuring a balanced output circuit (source follower configuration) and a typical SNR of 73dB, it preserves the tonal richness of acoustic instruments while effectively suppressing electrical interference. With 125dB maximum SPL at ≤1% THD, it handles everything from delicate fingerpicking to powerful drum transients without distortion.

Key Features

Wide Heart-Shaped Pickup Pattern – Broad front-side coverage with natural rear rejection, perfectly suited for capturing multiple instruments, vocalists, or conversation around a table.
Balanced Source-Follower Output – Delivers superior immunity to electromagnetic and radio-frequency interference, ensuring clean signal transmission even in electrically noisy studio or appliance environments.
High Signal-to-Noise Ratio (73dB Typ.) – Low self-noise preserves the subtle harmonics of wood guitars, violins, and vocals for pristine recordings.
High SPL Tolerance (125dB Max, THD≤1%) – Captures loud sources such as drums, brass, and amplified instruments without clipping or audible distortion.
Wide Operating Voltage Range (1.0–10.0V DC) – Compatible with a broad range of audio interfaces, field recorders, and appliance control boards.
Low Output Impedance (≤2kΩ) – Optimized for standard 6.8kΩ load impedances to ensure maximum signal transfer and system compatibility.
Rugged Environmental Reliability – Rated from -40°C to +80°C with proven resistance to thermal shock, humidity, and vibration for consistent performance in demanding conditions.

Technical Specifications

Please refer to the official specification sheet for detailed electrical and reliability parameters.

Typical Applications

Acoustic instrument recording – wood guitar, violin, cello, and drum overheads
Small roundtable interviews, podcasting, and broadcast dialogue
Multi-performer live sessions, ensembles, and group sing-along recordings
Indoor studio production and location recording requiring natural sound reproduction
Voice pickup for smart home appliances (range hoods, washing machines) in humid or EMI-prone conditions

Advantages

What sets this microphone apart is its balanced source-follower output combined with a wide heart-shaped polar pattern — a configuration that delivers both interference rejection and spacious front-side pickup in a single compact package. Whether you are capturing the warmth of a violin solo, the energy of a band rehearsal, the conversation around a podcast table, or a group of musicians singing together, the 73dB SNR and 125dB SPL capability ensure studio-grade clarity across an exceptionally wide dynamic range. This microphone brings professional audio quality to indoor recording studios, live session spaces, and even smart appliance voice interfaces, all while maintaining the durability required for real-world use.