AP 4.380 - Receiver FOCAL - Free user manual and instructions
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| Product Type | 4-channel audio amplifier |
| Number of Channels | 4 |
| RMS Power Output (4 Ohms) | 65 W per channel |
| Max Power Output | 380 W |
| Power Supply | 12 V DC (negative ground) |
| Frequency Response | 20 Hz – 20 kHz (± 0.5 dB) |
| Signal-to-Noise Ratio | > 90 dB (A-weighted) |
| Input Impedance | 22 kΩ |
| Input Sensitivity | 0.2 V – 6 V |
| Crossover Filters | High-pass / Low-pass / Full-range (55 Hz – 6 kHz) |
| Amplifier Class | Class AB |
| Dimensions (W x D x H) | 354 mm x 200 mm x 52 mm |
| Weight | 2.8 kg |
| Protection Circuits | Thermal, short-circuit, load mismatch |
| Cleaning and Maintenance | Wipe with a dry, soft cloth; avoid solvents |
| Safety Features | Turn off power before installation; ensure secure mounting |
| Spare Parts and Repairability | Authorized service centers; modular design for easy repair |
Frequently Asked Questions - AP 4.380 FOCAL
What is the RMS power output of the Focal AP 4.380?
The Focal AP 4.380 delivers 65 watts RMS per channel into 4 ohms, or 100 watts RMS per channel into 2 ohms. Total maximum power is 380 watts.
How do I connect the amplifier to my car stereo?
Use RCA cables from the head unit to the amplifier's input. Connect the power wire (12V) to the battery through a fuse, ground the amplifier to the chassis, and connect the remote turn-on wire to the stereo's remote output. Then connect speaker wires to the output terminals.
Can I use this amplifier at home?
Yes, but you will need a 12V DC power supply with sufficient amperage. Since the AP 4.380 is designed for car audio, it requires a stable 12V DC source. A home power supply of at least 20A is recommended for full output.
How do I set the crossover correctly?
Use the crossover dial to select high-pass, low-pass, or full-range depending on your speaker setup. For subwoofers, set a low-pass filter around 80 Hz. For midrange/tweeters, set a high-pass around 80-120 Hz. Adjust gain to match head unit voltage.
What speaker impedance is supported?
The amplifier is stable with 4-ohm and 2-ohm loads per channel. It can also be bridged to drive a single subwoofer at 4 ohms. Do not run loads below 2 ohms per channel to avoid overheating.
Why is there no sound from the speakers?
Check the power LED and ensure the remote wire has 12V. Verify RCA connections and speaker wires for shorts. Check the gain and input sensitivity settings. Also confirm the crossover isn't set to an extreme that cuts the frequency range.
How do I maintain and clean the amplifier?
Use a dry, soft cloth to wipe the heatsink and casing. Do not use water or cleaning agents. Ensure the vents are free of dust for proper ventilation.
What safety precautions should I take when installing?
Disconnect the negative battery terminal before installation. Use an inline fuse rated for the wire gauge. Mount the amplifier securely to avoid short circuits. Route wires away from moving parts and sharp edges.
Is the amplifier protected against overload?
Yes, the AP 4.380 includes thermal, short-circuit, and load mismatch protection. It will shut down temporarily to prevent damage in case of overheating or wiring faults.
Can I get spare parts if needed?
Yes, Focal provides spare parts through its authorized service centers. The amplifier is designed with a modular layout, making component-level repair possible.
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USER MANUAL AP 4.380 FOCAL
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Product information
Brand : FOCAL
Model : AP 4.380
Category : Receiver