AKG CBL301 - Three-Point Boundary Condenser Microphone with Cardioid Polar Pattern

AKG CBL301 - Three-element cardioid boundary microphone, low-profile with RGB LEDs and touch control

The AKG CBL301 is a professional, low-profile boundary layer microphone designed for clear, consistent pickup in conference rooms , huddle rooms , classrooms , and corporate spaces. Its triple-element cardioid architecture allows for selective coverage from 270° to 360° to accommodate rectangular, U-shaped, or round tables, reducing ambient noise and improving intelligibility. It features Touch I/O for talk/mute switching and an RGB (red/green/blue) LED ring for clear microphone status indication.

For easy installation, the CBL301 offers audio and logic screw terminals , RF suppression (mobile/handheld devices), and 24–48 V phantom power with very low typical power consumption (≈ 0.5 mA ). It comes with a 5 m cable and mounting hardware (threaded rod, screws, and gaskets) for clean, reliable tabletop integration with a minimal visual footprint ( 128.5 mm wide x 28.4 mm high , black finish).

Main features

• Triple cardioid element with configurable 270°–360° coverage depending on the table geometry.
• Low profile minimizes visual intrusion into rooms and chambers.
• Touch control for talk/mute and RGB LED ring with status indication.
• Screw terminals for quick and tidy installation ; 5 m cable included .
• RF suppression to prevent interference from mobile phones and laptops.
• 24–48 V phantom power with typical consumption of 500 µA ; output impedance ≤ 200 Ω .
• Max SPL 120 dB to handle voice peaks without distortion.
• Black finish and elegant aesthetics to integrate into any room.

Product benefits

• Tailor-made coverage : The three-pod design allows for effective coverage of one or more sides of the table or a full 360°.
• Greater intelligibility and leakage control thanks to cardioid directivity and boundary philosophy.
• Intuitive touch button operation and clear visual signaling via RGB LED.
• Simplified installation with screw terminals, 5m cable and hardware included.
• Universal compatibility with professional audio systems via 24–48 V phantom power.

Use cases

• Meeting rooms and huddle rooms with rectangular or round tables.
• Auditoriums, universities and administrations that require discreet and reliable microphones.
• Combined AV conference systems with DSP and installed speakers.

Package contents

• AKG CBL301 Microphone (Black Finish).
• 5m cable .
• Threaded rod , three screws , wing nut , end joint and table joint .
• Quick guide and documentation.

Frequently Asked Questions

• Does it require external power? Yes, it runs on 24–48 V phantom power supplied by the mixer/interface/DSP.
• How do I adjust the 270°/360° coverage? The CBL301 is a triple-element device : it can be configured to cover three sides (270°) or the entire table (360°) depending on the application.
• Can I integrate talk/mute logic into my system? Yes; it features logic inputs/outputs (3.3–24 V input and 3.3 V output, max. 500 µA) for interoperability with controllers/DSPs.

Description for projects

AKG CBL301 boundary microphone, triple-element cardioid with 270°–360° coverage; max. SPL 120 dB . Power supply : 24–48 V phantom power (typical consumption 500 µA , 400–600 µA). Output : impedance ≤ 200 Ω; connection via screw terminals . I/O logic : input 3.3–24 V (R in 100 kΩ), output 3.3 V (max. 500 µA). Indicators : RGB LED ring. Dimensions : width 128.5 mm , height 28.4 mm . Cable included: 5 m . Black finish.