Avantone Pro CK-40 Stereo Large-Diaphragm Condenser Microphone User Manual

Introduction

This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your Avantone Pro CK-40 Stereo Large-Diaphragm Condenser Microphone. The CK-40 is designed to capture high-quality stereo audio with its twin large-diaphragm transducers and offers versatile recording options through its rotatable upper capsule and multiple polar patterns.

Please read this manual thoroughly before using the microphone to ensure proper functionality and to achieve optimal audio performance.

What's in the Box

Upon unpacking, verify that all components listed below are present. If any items are missing or damaged, please contact your dealer or Avantone Pro support.

• Avantone Pro CK-40 Stereo Large-Diaphragm Condenser Microphone
• Custom Retro Shockmount
• 12-pin XLR Cable (for connecting microphone to breakout box)
• Stereo Breakout Box (converts 12-pin to dual 3-pin XLR outputs)
• Wooden Microphone Storage Box
• Aluminum Flight Case
• Foam Windscreen

Image: The Avantone Pro CK-40 microphone, shockmount, cables, and accessories neatly arranged within its protective aluminum flight case.

Setup

1. Unpack Components: Carefully remove the CK-40 microphone and all accessories from the flight case and wooden storage box.
2. Attach Shockmount: Securely screw the CK-40 microphone into the custom retro shockmount. Ensure the microphone is firmly seated to prevent accidental drops.
3. Mount to Stand: Attach the shockmount to a sturdy microphone stand. Adjust the stand's height and position as needed for your recording environment.
4. Connect 12-pin Cable: Connect the 12-pin XLR cable to the bottom of the CK-40 microphone. Ensure the connector is fully inserted and locked.
5. Connect Breakout Box: Connect the other end of the 12-pin XLR cable to the input of the stereo breakout box.
6. Connect to Audio Interface/Preamp: Use standard 3-pin XLR cables (not included) to connect the two output XLR connectors on the breakout box to two separate microphone inputs on your audio interface or mixing console.
7. Apply Phantom Power: The Avantone Pro CK-40 requires +48V phantom power to operate. Activate phantom power on both channels of your audio interface or mixing console that the microphone is connected to.

Image: Front view of the Avantone Pro CK-40 microphone, showcasing its red body and dual mesh grilles.

Operating Instructions

Polar Pattern Selection

The CK-40 features a switch on the microphone body to select between three polar patterns for each capsule: Cardioid, Omnidirectional, and Figure-8. These patterns allow for versatile sound capture depending on your recording needs.

• Cardioid: Captures sound primarily from the front, rejecting sound from the sides and rear. Ideal for isolating a sound source.
• Omnidirectional: Captures sound equally from all directions. Suitable for capturing ambient room sound or multiple sources around the microphone.
• Figure-8: Captures sound equally from the front and rear, rejecting sound from the sides. Useful for capturing two sources facing each other or for Mid-Side (M-S) stereo recording.

Capsule Rotation for Stereo Techniques

The upper capsule of the CK-40 can be rotated up to 90 degrees relative to the lower capsule. This unique feature enables various stereo recording techniques:

• X-Y Coincident: By setting both capsules to Cardioid and rotating the upper capsule to an angle (e.g., 90 degrees total spread), you can achieve a phase-coherent stereo image.
• Blumlein Pair: Set both capsules to Figure-8 and rotate the upper capsule to 90 degrees relative to the lower. This technique provides a wide, natural stereo image with good depth.
• Mid-Side (M-S): Set the lower capsule to Cardioid (Mid) and the upper capsule to Figure-8 (Side), with the upper capsule rotated 90 degrees. This allows for post-production manipulation of the stereo width.

Image: Detailed view of the Avantone Pro CK-40's upper capsule, illustrating the degree markings for precise rotation and stereo configuration.

Gain Setting

Set the input gain on your audio interface or preamp to an appropriate level. Aim for a healthy signal without clipping (distortion). Perform a sound check with the loudest anticipated sound source to ensure proper gain staging.

Maintenance

• Cleaning: Use a soft, dry, lint-free cloth to clean the microphone body. Do not use liquid cleaners or solvents, as they can damage the finish or internal components. Avoid touching the microphone capsules directly.
• Storage: When not in use, store the CK-40 microphone in its wooden box, inside the aluminum flight case, to protect it from dust, moisture, and physical damage.
• Environmental Conditions: Avoid exposing the microphone to extreme temperatures, high humidity, or direct sunlight for extended periods.

Troubleshooting

• No Sound Output:
  • Ensure +48V phantom power is activated on both input channels of your audio interface/preamp.
  • Verify all XLR cable connections are secure between the microphone, breakout box, and audio interface.
  • Check that input gain levels on your audio interface are not set to minimum.
  • Test with different XLR cables to rule out cable failure.
• Excessive Noise or Hum:
  • Ensure all cables are properly shielded and in good condition.
  • Check for ground loops. Try connecting your audio equipment to a single power outlet or using a ground lift adapter if safe to do so.
  • Keep the microphone and cables away from power supplies, computer monitors, and other electronic devices that can emit electromagnetic interference.
  • Verify the 12-pin cable connecting the microphone to the breakout box is fully seated and not damaged.
• Distorted Sound:
  • Reduce the input gain on your audio interface/preamp. The signal may be too hot, causing clipping.
  • Ensure the microphone is not placed too close to extremely loud sound sources.

Specifications

Warranty and Support

Warranty Information

The Avantone Pro CK-40 Stereo Large-Diaphragm Condenser Microphone is covered by a 2-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

The warranty does not cover damage caused by misuse, accident, unauthorized modification, or improper storage. For detailed warranty terms and conditions, please refer to the official Avantone Pro website or contact their customer service.

Customer Support

For technical assistance, service, or warranty inquiries, please contact Avantone Pro customer support. Contact information can typically be found on the official Avantone Pro website. When contacting support, please have your product model (CK-40) and serial number available.