Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your VALCOM VC-V-400 Dynamic Desk Top Microphone. Designed for clear audio capture, this omni-directional microphone is ideal for various applications including speech and video conferencing.

Figure 1: Valcom VC-V-400 Dynamic Desk Top Microphone. This image displays a black desktop microphone with a rectangular head, a sturdy vertical stand, and a rectangular base featuring two white push-to-talk buttons.
Package Contents
Please verify that all items listed below are present in your package:
- VALCOM VC-V-400 Dynamic Desk Top Microphone
Setup Instructions
- Required Adapter: The VC-V-400 microphone requires a V-9939B microphone adapter for proper operation. Ensure you have this adapter before proceeding.
- Connection: Connect the microphone's XLR connector to the appropriate input on your V-9939B adapter or compatible audio equipment.
- Placement: Position the microphone on a stable, flat surface, such as a desk or podium, ensuring it is free from obstructions that could impede sound capture.
Operating the Microphone
The VALCOM VC-V-400 is an omni-directional microphone, meaning it picks up sound equally from all directions. This makes it suitable for capturing audio from multiple speakers or general room sound.
- Push-to-Talk (PTT) Switch: The microphone is equipped with a push-to-talk switch. Press and hold this switch to activate the microphone for speaking. Release the switch to mute the microphone.
- Locking Bar: For continuous operation without holding the PTT switch, engage the locking bar. This will keep the microphone active until the locking bar is disengaged.
- Low Impedance: The microphone features low impedance, which is beneficial for longer cable runs and reducing noise interference. Ensure your audio equipment is compatible with low impedance inputs.
- Recommended Use: This microphone is optimized for speech and video conference applications, providing clear and consistent audio.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the microphone. Do not use liquid cleaners or solvents, as they may damage the finish or internal components.
- Storage: When not in use, store the microphone in a cool, dry place, away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping or subjecting the microphone to strong impacts, as this can damage the internal components and affect performance.
Troubleshooting
- No Audio Output:
- Ensure the V-9939B microphone adapter is correctly connected and powered.
- Verify that the microphone's XLR cable is securely plugged into both the microphone and the adapter/audio equipment.
- Check if the Push-to-Talk (PTT) switch is pressed or the locking bar is engaged.
- Confirm that the audio input on your connected device (e.g., PC, mixer) is selected and its volume is turned up.
- Poor Audio Quality (Static, Low Volume):
- Ensure the microphone is positioned correctly and not too far from the sound source.
- Check for any loose cable connections.
- Minimize background noise in the environment.
- Verify that the connected audio equipment's input gain or volume is set appropriately.
Specifications
| Brand | Valcom |
| Model Number | VC 400 |
| Polar Pattern | Omnidirectional |
| Connectivity Technology | XLR |
| Connector Type | XLR |
| Recommended Uses | Speech, Video Conference |
| Item Dimensions (L x W x H) | 10 x 8 x 5 inches |
| Item Weight | 3 pounds |
| Frequency Response | 15 KHz |
| Power Source | Corded Electric (via adapter) |
| Compatible Devices | Adapter (V-9939B recommended) |
| Included Components | Microphone |
| UPC | 172304218884, 803983013377, 172302620665 |
Warranty Information
Valcom products are manufactured to the highest quality standards. For specific warranty terms and conditions applicable to your VC-V-400 microphone, please refer to the warranty card included with your purchase or visit the official Valcom website. Keep your proof of purchase for warranty claims.
Customer Support
Should you require assistance with your VALCOM VC-V-400 Dynamic Desk Top Microphone, please contact Valcom customer support. You can find contact information on the official Valcom website or through your product reseller.
For additional resources and FAQs, please visit: www.valcom.com