1. Introduction
The Sescom SES-XLR-AB is a professional-grade, passive A/B switch designed for balanced audio signals. This device allows users to switch between two XLR input sources to a single XLR output, or vice-versa, without requiring external power. It is ideal for studio, live sound, and broadcast applications where reliable audio routing is essential.
Figure 1: Front view of the Sescom SES-XLR-AB switch, showing the branding, model number, and the A/B selector switch.
2. Key Features
- Passive Operation: Requires no external power supply for functionality.
- Balanced Audio: Designed for balanced XLR audio signals, ensuring signal integrity.
- A/B Switching: Allows selection between two input sources to one output, or one input to two output destinations.
- High-Quality Connectors: Utilizes durable, locking XLR connectors for secure connections.
- Reduced Wear: Helps prevent wear and tear on equipment connectors by minimizing constant plugging and unplugging.
3. Package Contents
- Sescom SES-XLR-AB Balanced Audio A/B Passive Switch
- User Manual (this document)
4. Product Overview
The SES-XLR-AB switch features three XLR connectors and a selector switch. Understanding the layout is crucial for proper setup and operation.
- Input/Output (I/O) Port: This is a single male XLR connector, typically used as the common output or input.
- A and B Ports: These are two female XLR connectors, used for the A and B audio paths.
- A/B Selector Switch: A toggle switch on the top panel to select between the A and B paths.
Figure 2: Side view displaying the single male XLR connector, designated as the common I/O port.
Figure 3: Side view displaying the two female XLR connectors, designated as the A and B input ports.
5. Setup Instructions
The SES-XLR-AB can be configured in two primary ways: switching between two inputs to one output, or one input to two outputs.
5.1. Two Inputs to One Output Configuration
- Connect your first audio source (e.g., microphone, mixer output) to the A female XLR input port using a male XLR cable.
- Connect your second audio source to the B female XLR input port using a male XLR cable.
- Connect the single male XLR output port of the SES-XLR-AB to your destination device (e.g., mixer input, audio interface) using a female XLR cable.
- Use the A/B selector switch on the top panel to choose which input source (A or B) is routed to the output.
5.2. One Input to Two Outputs Configuration
- Connect your single audio source (e.g., microphone, mixer output) to the single male XLR input port of the SES-XLR-AB using a female XLR cable.
- Connect your first destination device (e.g., mixer input, audio interface) to the A female XLR output port using a male XLR cable.
- Connect your second destination device to the B female XLR output port using a male XLR cable.
- Use the A/B selector switch on the top panel to choose which output destination (A or B) receives the audio signal from the input.
Note: Ensure all XLR cables are balanced for optimal performance.
6. Operating Instructions
Operation of the SES-XLR-AB is straightforward:
- Ensure all audio connections are secure before operating.
- To switch between the A and B paths, simply toggle the physical switch located on the top panel of the unit.
- The switch provides a clear tactile indication of the selected path.
- Since the unit is passive, there is no power button or indicator light. The switch functions purely mechanically.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Avoid abrasive cleaners or solvents.
- Storage: Store the unit in a cool, dry place away from direct sunlight and extreme temperatures.
- Connector Care: Periodically inspect XLR connectors for dust or debris. Use compressed air if necessary to clear any obstructions.
- Handling: Avoid dropping the unit or subjecting it to strong impacts, as this may damage internal components or connectors.
8. Troubleshooting
If you encounter issues with your SES-XLR-AB switch, consider the following:
- No Audio Output:
- Ensure all XLR cables are securely connected at both ends.
- Verify that the A/B selector switch is in the correct position for the desired audio path.
- Test cables individually to ensure they are not faulty.
- Confirm that the audio source is active and producing a signal.
- Check the input/output levels on your connected audio equipment.
- Hum or Noise:
- Ensure all cables are balanced XLR cables. Unbalanced cables can introduce noise.
- Check for ground loops in your audio system.
- Ensure cables are not running parallel to power cables, which can induce hum.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Sescom |
| Model | SES-XLR-AB |
| Connector Type | XLR (2 Female, 1 Male) |
| Cable Type | XLR |
| Operation | Passive (No power required) |
| Function | A/B Switch, Input/Output Expander |
| Compatible Devices | Professional audio equipment with XLR ports (mixers, microphone preamps, audio interfaces) |
10. Warranty Information
Sescom products are designed for reliability and performance. For specific warranty terms and conditions, please refer to the warranty card included with your purchase or visit the official Sescom website. Keep your proof of purchase for any warranty claims.
11. Customer Support
If you require further assistance or have questions not covered in this manual, please contact Sescom customer support through their official website or the contact information provided with your product packaging. When contacting support, please have your product model number (SES-XLR-AB) and purchase details ready.
Website: www.sescom.com
