JBL CONTROL 25-1L
JBL Professional Control 25-1L Speaker Instruction Manual
Model: CONTROL 25-1L
1. Introduction
The JBL Control 25-1L is a two-way 5-1/4 inch speaker featuring rich sonic characteristics, consistent wide dispersion, and a modern high-design aesthetic suitable for various decors. This speaker is designed for a wide range of applications including retail stores, restaurants, health clubs, theme parks, educational facilities, hospitality music cafes, and leisure venues. It functions as a high-output indoor/outdoor speaker suitable for foreground or background music and paging systems.
Key features include a 5-1/4 inch woven fiberglass woofer, a 3/4 inch PEI diaphragm tweeter with fluid cooling, a contemporary high-design appearance, and integrated invisible mounting hardware with a U-bracket. The speaker also boasts a weather-resistant enclosure and transducer, with 100 watts of continuous power handling (200 watts program).
2. Safety Information
Please read these instructions carefully before installation and use. Retain this manual for future reference. Adhere to all warnings and follow all instructions to ensure safe operation and optimal performance.
- Installation: Ensure all mounting hardware is securely fastened. Improper installation can result in serious injury or damage. Consult a qualified professional for installation if unsure.
- Power: These are passive speakers and require an external amplifier. Do not connect directly to a power outlet. Ensure the amplifier's power output matches the speaker's power handling capabilities to prevent damage.
- Environment: While weather-resistant, avoid direct exposure to extreme weather conditions or submersion in water. Ensure proper ventilation around the speakers.
- Cleaning: Disconnect from power before cleaning. Use a soft, dry cloth. Do not use liquid cleaners or aerosol cleaners.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
3. Package Contents
Verify that all items are present in your package:
- JBL Control 25-1L Speakers (2 units)
- U-Bracket Mounting Hardware (2 sets)
- Instruction Manual (this document)
4. Setup
4.1 Mounting Options
The Control 25-1L speakers offer versatile mounting options for both indoor and outdoor installations. The included U-bracket allows for secure attachment to walls or ceilings, enabling precise aiming of the sound.

Image 1: Front view of the JBL Control 25-1L speaker. This image shows the speaker's black grille and the JBL Professional logo, highlighting its compact and modern design.

Image 2: Side view of the JBL Control 25-1L speaker with dimensions. The image indicates a height of 35.56cm, a width of 22.86cm, and a depth of 20.32cm, providing a clear understanding of its physical size for installation planning.
4.2 Wiring Connections
These passive speakers require connection to an external amplifier using speaker wire. Ensure the amplifier is capable of driving an 8-ohm load and provides sufficient power (up to 100 watts continuous, 200 watts program) for optimal performance without distortion.
- Prepare Speaker Wire: Strip approximately 1/2 inch (12mm) of insulation from the ends of your speaker wire.
- Connect to Speaker: Connect the positive (+) terminal of the speaker to the positive (+) output of your amplifier. Connect the negative (-) terminal of the speaker to the negative (-) output of your amplifier. Ensure a secure connection and no stray wire strands that could cause a short circuit.
- Connect to Amplifier: Repeat the connection process for the other end of the speaker wire to your amplifier's speaker output terminals.
- Verify Polarity: Maintain consistent polarity for all speakers in your system to ensure proper phase and sound reproduction.
5. Operating
5.1 Basic Operation
Once properly installed and connected to an amplifier, the JBL Control 25-1L speakers are ready for use. Follow these steps:
- Power On Amplifier: Turn on your external audio amplifier.
- Select Source: Choose your desired audio source (e.g., smartphone, tablet, MP3 player, laptop connected to the amplifier).
- Adjust Volume: Start with the amplifier's volume at a low level and gradually increase it to your desired listening level. Avoid excessively high volumes that could cause distortion or damage to the speakers or your hearing.
- Placement Optimization: Experiment with speaker placement and aiming to achieve the best sound coverage and quality for your specific environment.
6. Maintenance
Regular maintenance helps ensure the longevity and performance of your JBL Control 25-1L speakers.
- Cleaning: Periodically wipe the speaker enclosures with a soft, dry cloth to remove dust and dirt. For outdoor installations, gently clean the grille and enclosure to remove any accumulated debris. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Regularly inspect the mounting hardware and connections for any signs of loosening or corrosion, especially in outdoor environments. Tighten any loose fasteners as needed.
- Environmental Protection: While weather-resistant, prolonged exposure to direct sunlight, heavy rain, or extreme temperatures can affect performance and lifespan. Consider protective covers for outdoor speakers during extended periods of non-use or severe weather.
7. Troubleshooting
If you encounter issues with your JBL Control 25-1L speakers, refer to the following common problems and solutions:
- No Sound:
- Ensure the amplifier is powered on and the correct input source is selected.
- Check all speaker wire connections at both the speaker and amplifier ends for secure contact and correct polarity.
- Verify the amplifier's volume is turned up and not muted.
- Distorted Sound:
- Reduce the amplifier's volume. Distortion often occurs when the amplifier is overdriven.
- Check speaker wire connections for any loose strands or short circuits.
- Ensure the audio source is not distorted.
- Uneven Sound or One Speaker Not Working:
- Check the individual speaker wire connections for the affected speaker.
- Swap the speaker wires at the amplifier output to determine if the issue is with the speaker or the amplifier channel.
If the problem persists after trying these steps, contact JBL Professional customer support or a qualified service technician.
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | CONTROL 25-1L |
| Brand | JBL |
| Speaker Type | Two-way (Woofer and Tweeter) |
| Woofer Diameter | 5.25 inches |
| Tweeter | 3/4 inch PEI Diaphragm with Fluid Cooling |
| Impedance | 8 Ohms |
| Power Handling (Continuous) | 100 Watts |
| Power Handling (Program) | 200 Watts |
| Frequency Response (Lower Limit) | 60 Hz |
| Connectivity Technology | Speaker Wire (via external amplifier) |
| Mounting Type | Indoor Mount, Outdoor Mount (U-bracket included) |
| Material | Woven Fiberglass, PEI Diaphragm |
| Special Feature | Weather-resistant enclosure |
| Recommended Uses | Music, Indoor, Outdoor |
| Compatible Devices | External Amplifier (for connection to smartphones, tablets, MP3 players, laptops) |
| Surround Sound Channel Configuration | 2.0 Channel |
| Color | Black |
| Included Components | Control 25-1L Speakers (Pair), Mounting Hardware |
| Product Weight (per speaker) | 7.3 pounds (approx. 3.3 kg) |
| Number of Products | 2 (Pair) |
| Control Method | None (Passive Speaker) |
| Power Source | External Amplifier Required |
| Manufacturer Discontinued | No |
9. Warranty and Support
9.1 Limited Warranty
The JBL Control 25-1L speakers come with a limited warranty. Please refer to the warranty card included with your product or visit the official JBL Professional website for detailed terms and conditions regarding warranty coverage, duration, and limitations.
9.2 Customer Support
For technical assistance, product inquiries, or warranty claims, please contact JBL Professional customer support through their official website or the contact information provided in your product documentation. Have your model number (CONTROL 25-1L) and purchase information ready when contacting support.
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