1. Introduction
The Genelec 8240A Bi-Amplified DSP Monitoring System is a professional-grade near-field monitor designed for critical listening environments. It integrates advanced digital signal processing (DSP) to provide precise acoustic control and optimization.
This manual provides essential information for the proper setup, operation, and maintenance of your Genelec 8240A monitoring system.

Figure 1: Front view of the Genelec 8240A Bi-Amplified DSP Monitoring System. This image shows the dark grey speaker with its main woofer and tweeter, and the Genelec logo at the bottom. A small green LED indicator is visible on the lower right.
Key Features:
- System Type: Active, 2-way configuration.
- Drivers: 6.5" Low-frequency driver, 3/4" High-frequency driver.
- Frequency Response: 41Hz - 23kHz.
- Max Peak SPL: 105dBA.
- Output Power: 90W.
- Technologies: Genelec MDE (Minimum Diffraction Enclosure) and DCW (Directivity Control Waveguide) for accurate sound reproduction.
- SAM System: Features Genelec AutoCal and Genelec Loudspeaker Manager (GLM) control network technologies for automatic alignment and system control.
2. Setup
2.1 Unpacking and Placement
- Carefully remove the monitor from its packaging. Retain the packaging for future transport or storage.
- Place the monitors on a stable surface, such as speaker stands or a desk, ensuring they are at ear level in your listening position.
- Maintain symmetry in placement relative to your listening position and room boundaries for optimal stereo imaging.
2.2 Connections
- Power Connection: Connect the supplied power cable to the AC inlet on the rear panel of the monitor and then to a grounded mains outlet.
- Audio Input: Connect your audio source (e.g., audio interface, mixer) to the XLR input connector on the rear panel of the 8240A. Ensure the cables are balanced XLR for best performance.
- GLM Network Connection (Optional): For advanced control and calibration using Genelec Loudspeaker Manager (GLM) software, connect the monitor to a GLM network adapter using a standard Ethernet cable. Refer to the GLM user guide for detailed network setup instructions.
Important: Always ensure the monitor's power switch is in the OFF position before making any connections.
3. Operating Instructions
3.1 Powering On/Off
- To power on the monitor, flip the power switch on the rear panel to the ON position. The front panel LED will illuminate.
- To power off, flip the power switch to the OFF position.
3.2 Basic Operation
Once powered on, the 8240A will begin to reproduce audio from the connected source. The monitor's volume and other acoustic settings are primarily controlled via the Genelec Loudspeaker Manager (GLM) software when connected to a GLM network.
3.3 Using Genelec Loudspeaker Manager (GLM) and AutoCal
The 8240A is part of the Genelec SAM (Smart Active Monitor) system, which allows for advanced control and room acoustic compensation using GLM software and AutoCal. This system enables:
- Automatic Calibration (AutoCal): Automatically measures and compensates for room acoustic anomalies, aligning levels, timing, and equalization for all monitors in the network.
- System Control: Adjust all aspects of monitor settings, including input sensitivity, bass roll-off, treble tilt, and desktop control.
- Group Management: Create and manage different listening groups and settings for various applications.
For detailed instructions on installing and using GLM software and performing AutoCal calibration, please refer to the dedicated Genelec GLM User Guide available on the official Genelec website.
4. Maintenance
4.1 Cleaning
- Clean the exterior surfaces of the monitor with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or strong detergents, as these may damage the finish.
- Avoid spraying liquids directly onto the monitor.
4.2 General Care
- Protect the monitor from excessive dust, moisture, and extreme temperatures.
- Ensure adequate ventilation around the monitor to prevent overheating.
- Avoid placing objects on top of the monitor that could obstruct ventilation or fall onto the drivers.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from monitor |
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| Distorted or unclear sound |
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| Monitor not recognized by GLM |
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If the problem persists after attempting these solutions, please contact Genelec customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | 8240APM |
| System Type | Active, 2-way Bi-amplified DSP Monitor |
| Low-frequency Driver | 6.5 inches |
| High-frequency Driver | 3/4 inches |
| Frequency Response | 41Hz - 23kHz |
| Max Peak SPL | 105dBA |
| Output Power | 90 Watts |
| Input Connectors | XLR |
| Control Method | App (GLM) |
| Power Source | AC |
| Dimensions (H x W x D) | 13.8" (350mm) x 9.3" (237mm) x 8.8" (223mm) |
| Weight | 20.8 lb. |
| Manufacturer | Genelec |
7. Warranty and Support
7.1 Warranty Information
Genelec products are manufactured to the highest standards. For specific warranty terms and conditions applicable to your region, please refer to the warranty card included with your product or visit the official Genelec website. Keep your proof of purchase for warranty claims.
7.2 Customer Support
For technical assistance, troubleshooting, or service inquiries, please contact Genelec customer support. You can find contact information and additional resources, including FAQs and software downloads, on the official Genelec website: www.genelec.com/support.
When contacting support, please have your product model number (8240APM) and serial number ready.





