Wide Cardioid ECM Mic for Instrument & Field Recording

Overview

The ECM-B1655UL37-26545 is a professional-grade wide cardioid electret condenser microphone powered by a Sanyo Japan core for superior audio performance. Its wide cardioid pickup pattern offers a broader acceptance angle than standard cardioid, capturing sound from a wider front area while maintaining effective rear rejection—ideal for instrumental recording, outdoor field interviews, and handheld karaoke where natural room ambiance and flexible positioning are desired.

Key Features

• Sanyo Japan Core – Premium Japanese Sanyo transistor delivers exceptional audio quality and long-term reliability.
• Wide Cardioid Pickup Pattern – Broad front acceptance angle captures natural instrument tone and room ambiance with forgiving positioning.
• High Sensitivity (-37±2dB) – Delivers consistent output across all units with RL=2.2kΩ, Vs=2.0V.
• Ultra-High SNR (76dB Typ.) – Exceptionally clean signal path preserves subtle harmonics and audio detail.
• Flat Frequency Response (50-20kHz) – Full-range audio captures low-end body and high-frequency overtones of acoustic instruments.
• High Max SPL (120dB, THD≤5%) – Handles loud sound sources like guitar amps, drums, and close-miked vocals without distortion.
• Wide Operating Voltage (1.0–10.0V DC) – Broad compatibility with portable recorders, mixers, and handheld devices.
• Low Current Consumption (≤500µA) – Ideal for battery-powered and field recording applications.

Technical Specifications

• Model: ECM-B1655UL37-26545
• Directional Characteristic: Wide Cardioid
• Sensitivity: -37±2dB (RL=2.2kΩ, Vs=2.0V, @f=1kHz, Pin=1Pa, 0dB=1V/Pa, L=50cm)
• Output Impedance: 2.2kΩ (Max.)
• Signal-to-Noise Ratio: 76dB (Typ.)
• Maximum SPL: 120dB (THD≤5%)
• Standard Operating Voltage: 2.0V DC
• Operating Voltage Range: 1.0–10.0V DC
• Current Consumption: 500µA (Max.)
• Frequency Response: 50Hz – 20kHz

Typical Applications

• Instrumental Recording – Flat response and wide pickup preserve natural tone of acoustic guitar, piano, strings, and wind instruments.
• Outdoor Interviews & Field Recording – Forgiving wide cardioid pattern accommodates movement while rejecting rear noise.
• Handheld Karaoke Devices – High SPL handling and natural vocal reproduction withstand close-miking and loud singing.
• Live Performance & Stage – Wide pickup captures performers’ natural movement while maintaining feedback rejection.

Reliability & Environmental Durability

• High-Temperature Test: +80°C for 100 hours, sensitivity change ≤±3dB
• Low-Temperature Test: -40°C for 100 hours, sensitivity change ≤±3dB
• Humidity & Heat Test: +55°C, 85% RH for 100 hours, sensitivity change ≤±3dB
• Thermal Shock Test: +80°C 0.5H → room temp 1H → -40°C 0.5H → room temp 1H, 10 cycles
• Vibration Test: 10-55Hz, 1.52mm amplitude, 2 hours per X/Y/Z direction
• Dropping Test: 1.0m height onto marble floor, 5 times without package
• Storage Temperature: -35°C to +60°C
• Operating Temperature: -35°C to +60°C

Soldering & Handling Guidelines

• Soldering temperature: 360±10°C, soldering time: ≤3 seconds
• Operators, fixtures, and soldering iron must be statically grounded
• Recommended PCB hole size: MIC Diameter + 0.05mm
• Recommended PCB hole height: MIC Height – 0.2mm

Built for durability and consistent performance, the ECM-B1655UL37-26545 is the ideal choice for musicians, content creators, and product designers seeking a versatile wide cardioid microphone that delivers natural, detailed audio with flexible positioning in a robust, reliable package.