Samson CM11B – Omnidirectional boundary microphone with internal high-pass filter and mini XLR

Samson CM11B – Omnidirectional boundary microphone with internal high-pass filter and mini XLR

The Samson CM11B is a boundary condenser microphone designed to clearly capture everyone around a table. Its omnidirectional capsule provides hemispherical pickup (180° above the surface) , ideal for meeting rooms, video conferences, classrooms or places of worship. It features an internal high-pass filter for low-frequency noise control and a 3-pin mini XLR connector . It also includes a 9.1 m (30 ft) mini XLR to XLR3 cable for direct connection to mixers, interfaces or conference systems with 9–52 V phantom power .

The heavy-duty alloy body with steel grille withstands heavy use, while the neoprene base decouples the microphone from the table to reduce shock and vibration. With a 30 Hz–18 kHz response, 127 dB maximum SPL , and 103 dB dynamic range , the CM11B delivers natural speech intelligibility and stable output levels in fixed or portable installations.

Main features

• Omnidirectional capsule with semi-space pickup ( 180° ) to cover multiple speakers from the center of the table.
• Internal high-pass filter helps mitigate handling and low-frequency noise.
• Professional connection: 3-pin mini XLR on microphone + included 9.1m cable (mini XLR↔XLR3).
• Power: Works with standard 9–52 V phantom power .
• Robust construction: cast body, steel grille and decoupled neoprene base .
• Flexible mounting: Rear keyholes for wall or ceiling mounting; low profile and low-reflection matte black finish.
• Audio Performance: 30 Hz–18 kHz, sensitivity −39 dBV/Pa , impedance 600 Ω , SNR 70 dB , max SPL 127 dB .

Product benefits

• Improved speech understanding in meetings and conferences thanks to its omnidirectional pattern and integrated bass filter.
• Instant installation with the included mini XLR→XLR3 cable; no external electronics boxes required.
• Greater signal clarity due to mechanical decoupling from the neoprene base and integrated electronics.
• Versatility for tables, lecterns, walls or ceilings with minimal visual intrusion.

Use cases

• Boardrooms and videoconference rooms (table-centered placement).
• Classrooms, corporate training and worship spaces.
• Recording of minutes, group interviews and discreet voice reinforcement.

Frequently Asked Questions

• Does it need external power? Yes, it requires 9–52 V phantom power from the mixer, interface, or stagebox .
• Does it have a power switch or a low-cut switch? The high-pass is internal (not switchable). Additional adjustments are made from the mixer/processor.
• How long is the included cable? Approximately 9.1 m (30 ft) mini XLR to XLR3.

Description for projects

Omnidirectional boundary condenser microphone with internal high-pass filter, 3-pin mini XLR and included 9.1 m mini XLR↔XLR3 cable. Response 30 Hz–18 kHz, sensitivity −39 dBV/Pa, impedance 600 Ω, SNR 70 dB, dynamic range 103 dB, max. SPL 127 dB. Phantom power 9–52 V; consumption 4 mA. Metal construction with steel grille, neoprene base and wall/ceiling mounting option. Dimensions: Ø 84 mm × 21 mm .