Control Contractor 28-1L - Speaker JBL - Free user manual and instructions
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| Brand | JBL |
| Model | Control Contractor 28-1L |
| Product Type | Professional Loudspeaker |
| Speaker Type | 2-way, in-ceiling / in-wall |
| Driver Size | 8-inch woofer, 1-inch tweeter |
| Frequency Response | 50 Hz – 20 kHz (-10 dB) |
| Power Handling (Continuous) | 100 W |
| Power Handling (Peak) | 200 W |
| Impedance | 8 ohms (nominal) |
| Sensitivity | 90 dB (1 W / 1 m) |
| Dimensions (HxWxD) | 11.6 x 11.6 x 7.5 in (295 x 295 x 190 mm) |
| Weight | 7.5 lb (3.4 kg) |
| Color | White (paintable) |
| Mounting Type | Ceiling or wall mount with included bracket |
| Applications | Commercial background music, paging, foreground music |
| Installation | Easy to install with dog-ears and tile bridge |
| Weather Resistance | IPX5 (splash-resistant) |
| Warranty | 5 years (limited) |
| Included Accessories | Grille, mounting bracket, tile bridge, cutout template |
Frequently Asked Questions - Control Contractor 28-1L JBL
What is the recommended amplifier power for the Control Contractor 28-1L?
An amplifier delivering between 50 and 200 watts per channel into 8 ohms is recommended. For optimal performance, use a high-quality professional amplifier.
Can the speaker be used outdoors?
Yes, the JBL Control Contractor 28-1L has an IPX5 rating, making it splash-resistant. It can be installed in covered outdoor areas but should not be exposed to direct rain or pressure washing.
What is the best way to paint the speaker grille?
Remove the grille and paint it with a high-quality spray paint suitable for plastics. Apply thin, even coats and let dry completely before reattaching. Do not paint the speaker cone or enclosure.
What is the impedance of the Control Contractor 28-1L?
The nominal impedance is 8 ohms. Ensure your amplifier is stable at 8 ohms per channel. Multiple speakers can be paralleled, but total impedance should not drop below 4 ohms.
How do I install the speaker in a ceiling tile?
Use the provided cutout template to mark the tile, then cut the hole. Insert the speaker, tighten the dog-ears by turning the screws, and attach the grille. The tile bridge helps support the weight.
What is the frequency response of this speaker?
The frequency response is 50 Hz to 20 kHz at -10 dB. For music reproduction, it provides full-range sound with a 8-inch woofer and 1-inch tweeter.
Can I use a 70V or 100V line transformer with this speaker?
The standard model is 8 ohms. However, JBL offers a 70V/100V version (model 28-1L-T). Ensure you have the correct model for distributed audio systems.
How do I clean the speaker?
Use a soft dry cloth to wipe the enclosure and grille. Avoid using water, solvents, or abrasive cleaners. For the grille, you can gently vacuum to remove dust.
Is the speaker magnetically shielded?
Yes, the Control Contractor 28-1L is designed with magnetically shielded drivers to prevent interference with nearby video monitors.
What is the warranty period?
JBL provides a limited 5-year warranty from the date of purchase. It covers defects in materials and workmanship under normal use.
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USER MANUAL Control Contractor 28-1L JBL
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Product information
Brand : JBL
Model : Control Contractor 28-1L
Category : Speaker