NF 4C LP - Loudspeaker Extron - Free user manual and instructions
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| Brand | Extron |
| Model | NF 4C LP |
| Product Type | Ceiling Mount Passive Loudspeaker |
| Driver Size | 4 inches |
| Frequency Response | 100 Hz – 20 kHz |
| Power Handling (RMS) | 60 W |
| Impedance | 8 Ohms (bypass transformer) / 70V/100V taps |
| Sensitivity | 87 dB (1W/1m) |
| Maximum SPL | 105 dB |
| Transformer Taps | 70V: 60W, 30W, 15W, 7.5W; 100V: 60W, 30W, 15W |
| Coverage Angle | 120° conical |
| Dimensions (Diameter x Depth) | 6.2 in x 3.5 in (157 mm x 89 mm) |
| Cutout Size | 5.5 in (140 mm) diameter |
| Weight | 2.5 lb (1.1 kg) |
| Housing Material | Steel with ABS baffle |
| Grille Material | Perforated steel, powder coated |
| Color | White (paintable) |
| Mounting | Ceiling tile bridge or C-ring |
| Operating Temperature | 32°F – 104°F (0°C – 40°C) |
| Compliance | UL 2043 (plenum rated) |
| Included Accessories | Cutout template, paint shield, tile bridge |
Frequently Asked Questions - NF 4C LP Extron
What are the available power taps for the NF 4C LP?
The NF 4C LP supports 70V taps at 60W, 30W, 15W, and 7.5W, and 100V taps at 60W, 30W, and 15W. Adjust via the rotary switch on the front baffle.
How do I install the NF 4C LP in a ceiling?
Cut a 5.5-inch diameter hole in the ceiling tile, use the included tile bridge for support, connect the speaker wires to the terminal block, set the power tap, and secure the speaker with mounting tabs.
Can the NF 4C LP be used in plenum spaces?
Yes, the NF 4C LP is UL 2043 plenum rated, making it suitable for installation in air-handling spaces.
What is the impedance when bypassing the transformer?
When set to the '8Ω' position on the tap switch, the speaker presents an 8-ohm load for use with standard low-impedance amplifiers.
Is the grille paintable?
Yes, the white powder-coated grille can be painted to match the ceiling. Use the included paint shield to protect the driver during painting.
What is the recommended amplifier power for the NF 4C LP?
For optimal performance, use an amplifier delivering 60W to 120W per channel at 8 ohms, or a 70V/100V amplifier with a matching power tap.
Does the NF 4C LP include a backcan?
No, the NF 4C LP is a low-profile open-back design. For sound isolation, an optional backcan (model SMB 4C) may be purchased separately.
What is the coverage angle of the speaker?
The NF 4C LP provides a 120° conical coverage, suitable for even sound distribution in small to medium rooms.
How do I clean the NF 4C LP?
Remove the grille gently and wipe with a dry, soft cloth. Avoid using water or cleaning chemicals. Ensure the speaker is disconnected during cleaning.
What is the warranty period for the NF 4C LP?
Extron offers a standard 3-year parts and labor warranty for the NF 4C LP. Register your product for extended warranty options.
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USER MANUAL NF 4C LP Extron
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Product information
Brand : Extron
Model : NF 4C LP
Category : Loudspeaker