MXL AC-40 EXT gooseneck USB conference microphone, cardioid, extension model

The MXL AC-40 EXT gooseneck USB conference microphone is a directional microphone designed for spoken-word capture in meeting rooms, boardrooms and lecture spaces. This extension model features a flexible gooseneck that allows precise positioning toward the speaker and a USB connection for straightforward digital audio streaming to a computer. The cardioid pickup pattern focuses on the speaker while reducing ambient noise from the sides and rear, making it suitable for conference calls, voice recording and presentations where clear intelligibility is required.

Advantages

The gooseneck design enables accurate aiming of the microphone capsule for consistent voice pickup without complex setup. USB connectivity provides plug-and-play operation with modern computers and conferencing systems, eliminating the need for external audio interfaces. The cardioid polar pattern improves speech clarity by rejecting room reflections and off-axis noise. The extension model offers additional reach and flexible placement options for tables, podiums and lecterns.

Suitable for

• Boardroom and meeting room conference calls
• Lecture halls, classrooms and training rooms
• Presentations, panel discussions and podium use
• Voice recording for interviews and dictation

Key specifications

• Microphone type: gooseneck condenser with cardioid polar pattern
• Connectivity: USB digital audio output for direct connection to computers
• Form factor: flexible gooseneck for adjustable positioning and extended reach
• Intended use: speech-focused capture in in-person conferencing and presentation environments
• Compatibility: designed for plug-and-play operation with standard conferencing software on major operating systems

How to use

Position the gooseneck so the capsule points toward the speaker’s mouth at a distance of approximately 15–30 cm for optimal speech pickup. Connect the microphone to a computer’s USB port and allow the operating system to recognize the device; select it as the audio input in the conferencing or recording application. Adjust the gooseneck angle to reduce plosives and to keep the microphone out of the speaker’s line of sight. For multi-person setups, place the microphone centrally or use additional mics to ensure even coverage.

Usage recommendations

Use a pop filter or position the microphone slightly off-axis to minimize plosives. Place the unit away from noisy equipment and reflective surfaces when possible to improve clarity. Regularly verify input levels in your conferencing software and perform a short sound check before meetings or presentations.