Sennheiser e 901 — Half-Cardioid Boundary Layer Condenser Instrument Microphone
e 901 Overview
The Sennheiser e 901 is a boundary layer condenser microphone engineered for professional instrument miking and conferencing applications. Its half-cardioid polar pattern is optimized for placement against a reflective surface, making it a purpose-built solution for kick drum interior miking where consistent, phase-coherent low-end capture is critical. The design eliminates comb filtering artifacts common with conventional microphones placed near boundaries, delivering clean, accurate bass drum reproduction night after night. Live sound engineers, touring companies, and houses of worship will find the e 901 a reliable, low-profile solution for demanding stage environments.
The e 901’s compact form factor allows it to be positioned inside a kick drum without interfering with the drummer’s performance, and its boundary layer design integrates naturally into the acoustic environment of the drum shell for repeatable results across different stage setups.
Key Features
- Half-Cardioid Boundary Layer Design — Optimized for placement on reflective surfaces, eliminating phase cancellation and comb filtering for accurate, coherent sound capture
- Kick Drum Optimized — Purpose-built for interior kick drum placement, delivering precise low-frequency reproduction suited to live stage applications
- Condenser Capsule — Provides extended frequency response and transient detail compared to dynamic boundary microphones
- Low-Profile Form Factor — Compact housing sits unobtrusively inside the drum shell without restricting drummer movement or requiring complex rigging
- Conference Table Application — Equally suited for boundary-layer conferencing setups where a discreet, surface-mounted microphone is required
- Sennheiser e Series Build Quality — Constructed to withstand the rigors of touring and repeated live production use
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