Features

Solid Series Amplifiers: The Focal Solid 4 amplifier is part of the Solid series of amplifiers, which feature AB-class amplification for excellent sound quality. Their all-aluminum chassis efficiently dissipates heat to protect the amp from thermal overload. The compact size makes the amp easier to install in tight places. The front-mounted connections and top-mounted controls are easily accessible for a clean installation.

Top-mounted Controls: The amplifier has controls conveniently mounted on the top panel under a removable cover. There are two sets of controls: the top row for channels 1 and 2 (front), and the bottom row for channels 3 and 4 (rear). The controls include:

• Gain Control: You can adjust the level of the input signal with this rotary control. Range is 0.2 Volts to 5.0 Volts.
• Crossover Switch: This 3-way switch lets you select the crossover operation as High-pass, Full-range, or Low-Pass.
• Frequency: Using the rotary control, you can select a cutoff frequency between 50 Hz and 150 Hz. The crossover has a slope of 12 dB/octave.

Front-mounted Terminals: The Solid 4 has all of the cable connections on the front of the amplifier for a clean installation. The terminals include:

• Speaker Outputs: Four pairs of set-screw terminals are provided for connecting speakers. The terminals can accept up to 7-gauge wire. The set screws can be tightened/loosened with the supplied 3mm Hex wrench. Note: You must first remove the terminal cover in order to access the set screws for the speaker and power terminals.
• Remote Control: An RJ-14 jack for connecting the supplied remote bass control module.
• Line Inputs: Front and rear pairs of left and right RCA jacks for the input signal from the head unit.
• Hi Level Inputs: Front and rear 4-pin Molex jacks for connecting the supplied speaker-level input harnesses.
• Fader Switch: A two-way switch for configuring the amp for two-channel or four-channel inputs. If you have a 4-channel input signal, you should push in the fader switch so you can fade from front to back using the head unit fader. If you have only a two-channel input signal, the switch should be in the Off position so all 4 channels of the amplifier can be fed with the 2-channel input signal, with no fading available.
• ATC Fuses: The amp is equipped with two 25-amp ATC-type fuse. Two spare fuses are included with the amplifier.
• Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals can accept up to 2-gauge wire, however, a 4-gauge wiring kit is sufficient for the 50-amp rating of the built-in fuse. The set screws can be tightened/loosened with the supplied 4mm Hex wrench.
• Remote: A set screw terminal for connecting the remote turn-on lead. The terminal will accept up to 16-gauge wire. The set screw can be tightened/loosened with the supplied 2mm Hex wrench.

Protection Circuitry: The Solid 4 amplifier employs the following protection circuits: short circuit, thermal overload, over voltage, polarity reversal.