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Channel Design: The Focal FPD 600.4 can be configured as a
4-channel, 3-channel, or 2-channel amplifier. The amplifier is stable to 2Ω
in stereo and 4Ω when bridged.
CEA-2006 Compliant: CEA-2006 is a system of testing and
measurement methods for mobile audio amplifiers. This voluntary standard
advocates a uniform method for measuring an amplifier's RMS power output and
signal-to-noise ratio. The criteria for measuring power uses a DC input voltage
of 14.4 volts and the RMS power output is measured into a 4Ω load, with 1%
or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range
of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured
in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006
standards allow consumers to compare amplifiers on an equal basis.
Speaker Level Inputs: The RCA inputs will accept either
speaker-level or line level signals from your car's head unit. A speaker level
signal is connected to the RCA inputs using a speaker wire to RCA adapter (sold
Auto Turn-on: When using a speaker level input, the amp will
turn on automatically when it senses the input signal.
Front-mounted Controls: The amplifier controls are mounted
on the front panel.
Level Control (Gain): The input level is independently
adjustable for channels 1+2 and 3+4. The input range is 0.2 Volts to 8.0 Volts.
Route Switch: The three position Route switch configures the
- 1+2: all four RCA inputs are used
- 3+4: only inputs 3+4 are used, and are
shorted to channels 1+2
- Copy: only inputs 3+4 are used; the
input signals and filter settings are copied to channels
Crossover: The amp has independent crossover controls for
channels 1+2 and 3+4:
- CH 1+2:
- HP/Flat: choose high pass or flat
(crossover is bypassed)
- Frequency: set the crossover point
when in high pass mode; rotary dial; 50 Hz-4 kHz
- CH 3+4:
- Mode: choose flat (crossover is
bypassed), high pass, or low pass/band pass
- LP/BP: when the mode switch is set
to low pass/band pass, choose which one with this switch
- HP: set the crossover point
when using as a high pass or band pass crossover;
rotary dial; 50 Hz-4 kHz
- LP: set the crossover point
when using as a low pass or band pass crossover;
rotary dial; 50 Hz-4 kHz
- Mono/Stereo: set to mono when
powering a subwoofer (or subwoofers); this also
activates the wired subwoofer remote
Wired Remote: A wired subwoofer level control is included.
The wired remote is only activated when the channel 3+4 crossover is set to low
pass and mono. The remote has integrated flanges and screws are included to mount
the unit under the dash. It includes a 15' cable to connect to the amplifier.
Note: The wired remote measures
approximately 1-5/8" wide (2-5/8" including
the mounting flanges) x 3/4" tall x 1-1/2"
deep (2-1/8" including the knob and cable).
Front-mounted Terminals: All the connections are on the front
of the amplifier for a clean installation.
Power Input: Two set-screw terminals are provided for connecting
the power and ground cables. The terminals can accept up to 6-gauge wire (an 8-gauge
wiring kit is sufficient for the 40-amp rating of the built-in fuses). The set screws
are tightened/loosened with the included 3mm Allen wrench.
Remote Turn-on: The remote turn-on set screw terminal will
accept up to 14-gauge wire. The set screw is tightened/loosened with the included
1.5mm Allen wrench.
Speaker Outputs: The four pair of speaker outputs set-screw
terminals will accept up to 14-gauge wire. The set screws are tightened/loosened
with the included 1.5mm Allen wrench.
Signal Input: The amplifier features two pair of stereo RCA
inputs (labeled channel 1+2 and 3+4). If no line level signal is available, you
will need two speaker wire to RCA adaptors (sold separately) to connect the
amplifier to the source unit via speaker wires.
Remote Control: An RJ-25 jack for connecting the supplied
remote bass control.
Fuses: The amp has two internal 20-amp ATO fuses. The bottom
panel must be removed to access the fuses.