AKG CHM99B - CHM99 Black Hanging Condenser Microphone

AKG CHM99B - Cardioid Hanging Condenser Microphone for Choirs (10 m, 125°)

The AKG CHM99B is a ceiling-mounted condenser microphone specifically designed for capturing choirs , public speakers, and ambience in auditoriums, theaters, houses of worship, and lecture halls. Its cardioid pickup pattern and wide 125° pickup angle provide even coverage with good intelligibility and high headroom . It features a special 10 m cable treated to reduce twisting and a spring steel clamp for precise aiming and a stable position. The capsule offers 70–18,000 Hz response, a maximum SPL of 125 dB (1% THD) , a sensitivity of 18 mV/Pa, and an equivalent noise floor of 21 dB(A) , ensuring clear sound with low artifacts.

The compact body ( 13.5 × 55 mm ) and low net weight of 20 g make it unobtrusive on camera and easy to install. It connects directly to consoles and interfaces via a 3-pin male XLR and operates on 9–52 V DC ( ≈ 3 mA ) phantom power . Supplied with a foam windscreen to reduce drafts and plosives . Available in black .

Main features

• Cardioid pattern with 125° coverage for natural pickup of vocal ensembles.
• Frequency response : 70–18,000 Hz; Max. SPL : 125 dB (1% THD); Sensitivity : 18 mV/Pa.
• Signal-to-noise ratio : 73 dB(A); equivalent noise : 21 dB(A).
• 10m “anti-twist” cable with spring clamp for precise and stable alignment.
• Connector : 3-pin XLR male, balanced ; impedance : 600 Ω (recommended load ≥ 2 kΩ).
• Power supply : phantom 9–52 V DC (consumption approx. 3 mA).
• Discreet format : 13.5 × 55 mm and 20 g net weight; black finish.
• Includes foam windshield.

Product benefits

• Intelligibility and control : Cardioid directionality minimizes leakage and feedback on stages and temples.
• Clean installation : 10m cable designed for hanging, with spring clip to orient the microphone without tools.
• Visual discretion : reduced dimensions and black finish to integrate into the architecture.
• Direct Integration : Balanced XLR output and universal compatibility with standard phantom power.

Use cases

• Choirs and vocal ensembles in auditoriums, churches and schools.
• Ambience and room reinforcement for theaters and corporate events.
• Aerial capture of instrumental groups and educational ensembles.

Frequently Asked Questions

• What cable is included? A special 10m cable designed to minimize twisting and keep the microphone aligned.
• Is the weight 480g? No, the net weight of the microphone is 20g . Some stores advertise the shipping weight (~480g) of the packaged unit.
• Does it require external power? Yes, 9–52 V DC phantom power via the 3-pin XLR connector.

Description for projects

AKG CHM99B cardioid pendant microphone, pre-polarized condenser. 70–18,000 Hz ; max. SPL 125 dB (1 % THD) ; sensitivity 18 mV/Pa ; noise eq. 21 dB(A) ; S/N 73 dB(A) ; Z output 600 Ω (load ≥ 2 kΩ). Phantom power 9–52 V DC (≈ 3 mA). 3-pin male XLR connector . Dimensions 13.5 × 55 mm; net weight 20 g. 10 m cable with spring clamp ; pickup angle 125°. Including foam windscreen. Black.