1. Introduction
This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your JBL Professional SRX815 Passive 2-Way 15-Inch Loudspeaker. Please read this manual thoroughly before using the product to ensure optimal performance and safety.

Figure 1: Front view of the JBL Professional SRX815 Passive 2-Way 15-Inch Loudspeaker.
2. Safety Information
Always adhere to the following safety guidelines:
- Ensure proper ventilation around the speaker.
- Do not expose the speaker to rain or moisture.
- Avoid placing the speaker near heat sources.
- Use only specified attachments/accessories.
- Refer all servicing to qualified service personnel.
3. Setup
3.1 Unpacking
Carefully remove the speaker from its packaging. Inspect for any signs of damage during transit. Retain the original packaging for future transport or storage.
3.2 Placement and Mounting
The SRX815 is designed for versatile placement, including floor-standing, monitor use, pole/tripod mounting, and suspension. Ensure the chosen location is stable and can support the speaker's weight (57 lbs).
- Floor-Standing: Utilize the integrated feet for stability.
- Monitor Use: The cabinet design allows for use as a stage monitor.
- Pole/Tripod Mounting: The speaker features a 35mm pole socket for mounting on a speaker pole or tripod stand.
- Suspension: M10 suspension points are provided for secure overhead installation. Consult a qualified professional for suspended installations.

Figure 2: Dimensions of the JBL Professional SRX815, showing its height of 27.2 inches, depth of 18 inches, and width of 18.82 inches.
3.3 Connections
The SRX815 is a passive speaker and requires an external amplifier. Connect the speaker to a suitable power amplifier using high-quality speaker cables. The rear panel features Neutrik Speakon NL4 connectors for input and pass-through connections.

Figure 3: Rear panel of the SRX815, illustrating the Neutrik Speakon NL4 input and pass-through connectors for amplifier connection.
Connection Steps:
- Ensure your amplifier is turned off and its volume is set to minimum.
- Connect a speaker cable from the amplifier's output to one of the NL4 input connectors on the SRX815.
- If linking multiple passive speakers, use the NL4 pass-through connector to connect to the next speaker. Ensure your amplifier can handle the combined impedance.
Video 1: This video, while demonstrating the JBL EON 700 Series (a powered speaker), illustrates the general process of connecting an AC cable and audio source to a JBL loudspeaker. The principles of connecting audio sources are similar for passive speakers, though the SRX815 requires an external amplifier.
4. Operating the SRX815
4.1 Powering On
Since the SRX815 is a passive speaker, it does not have its own power switch. Power is supplied by the external amplifier. Ensure the amplifier is connected correctly before powering it on.
- Verify all speaker cables are securely connected between the SRX815 and the amplifier.
- Ensure the amplifier's volume is at its minimum setting.
- Power on your external amplifier.
- Gradually increase the amplifier's volume to the desired listening level.
4.2 Audio Playback
Once the amplifier is powered on and connected, audio will be reproduced through the SRX815. Adjust the volume and equalization settings on your external mixer or amplifier to achieve the desired sound.
The SRX815 is a 2-way bass reflex system, providing a wide frequency range suitable for various applications, from live performances to public speaking.
5. Maintenance
Regular maintenance helps prolong the life and performance of your SRX815 speaker.
- Cleaning: Use a soft, dry cloth to clean the exterior of the speaker. Avoid abrasive cleaners or solvents. For the grille, a soft brush or vacuum cleaner can remove dust.
- Storage: When not in use, store the speaker in a dry, temperature-controlled environment. If possible, use a protective cover to prevent dust accumulation and physical damage.
- Inspection: Periodically check all cables and connectors for wear or damage. Ensure mounting hardware is secure.

Figure 4: Front view of the SRX815 with the grille removed, showing the 15-inch woofer and compression driver. Regular cleaning of the grille is recommended.
6. Troubleshooting
If you encounter issues with your SRX815, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound |
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| Distorted Sound |
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| Intermittent Sound |
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7. Specifications
Detailed technical specifications for the JBL Professional SRX815 Passive 2-Way 15-Inch Loudspeaker:
| Feature | Specification |
|---|---|
| Model Name | System Speaker, 15 Inch |
| Speaker Type | Passive Portable |
| Mounting Type | Portable, Tripod |
| Material | Engineered Wood |
| Subwoofer Diameter | 15 Inches |
| Woofer Diameter | 15 Inches |
| Power Handling (Peak) | 3200 Watts |
| Power Handling (Program) | 1600 Watts |
| Power Handling (Continuous) | 800 Watts |
| Frequency Response | 41-20k Hz (Wide Range), 56-20k Hz (Frequency Response) |
| Maximum SPL Output | 136 dB |
| Coverage Pattern | 90 degrees x 50 degrees |
| Connectivity Technology | XLR (for signal pass-through from amplifier) |
| Product Dimensions | 18"D x 18.8"W x 27.2"H |
| Item Weight | 57 Pounds |
| Color | Black |
| Included Components | JBL Professional SRX815 Portable 2-Way Bass Reflex Passive System Speaker, 15-Inch |
8. Warranty
The JBL Professional SRX815 Passive 2-Way 15-Inch Loudspeaker comes with a Limited Warranty. For specific terms, conditions, and duration of the warranty, please refer to the warranty card included with your product or visit the official JBL Professional website.
9. Support
For further assistance, technical support, or service inquiries regarding your JBL Professional SRX815 speaker, please contact JBL Professional customer support or visit their official website:
- JBL Professional Website: jblpro.com
- Refer to the product packaging or the JBL Professional website for regional contact information.





