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focal power Symmetric amplifierS
U s e r m a n u a l
10
Focal Power Symmetric 3000
8
6 - Connections, features and controls
6.1 - Connections, features
a INPUT(S): the RCA sockets are dedicated to low level signal input.
b GAIN: the GAIN rotary potentiometer allows you to adjust the level of the input signal in the amplifier.
CAUTION: increasing the input gain does not mean more power, but more noise. The amplifier input
accepts a signal with amplitude between 0.2 and 5V.
This potentiometer must be set according to the source level (line output level).
Start by putting the amplifier gain at its lowest level. Gradually turn up the level of the source up to the 3/4.
Turn up the amplifier gain level up to the listening level wanted. Turn down the level if distortion occurs.
In the event of the amplifier use with one or several subwoofer(s), the "GAIN" setting will delimit the level of
the subwoofer(s) according to the one of the kits amplified by the source (car radio) or another amplifier. Put
the source at an average listening level, then adjust the amplifier gain to get a perfect coherence between
the sound levels of the kits and the subwoofer(s).
MODE: The MODE switch permits to activate the (HPF) and (LPF) crossovers by the choice of the switch in
X-OVER position or deactivate the crossover in the Direct position.
X-OVER (crossover mode): the X-OVER switch permits to activate either a high-pass crossover (HP), a
low-pass crossover (LP) or a bandpass crossover (BP). In the case of the FPS 1500, FPS 3000, the X-OVER
switch only permits to choose between a LOW-PASS crossover and a DIRECT mode without crossover.
LOW PASS and HIGH PASS: the rotary potentiometers permit to adjust the value of the high-pass or low-
pass filter. The chosen value defines the frequency up to which (or from which) the signal will be cut.
NOTE: For the FPS 2160, FPS 2300 RX and FPS 4160 amplifiers, the adjacent switch indicates how many
times you have to multiply the LOW PASS or HIGH PASS potentiometer value. Thus, in "X1" mode, the
potentiometer permits to choose a cut-off frequency between 50Hz and 500Hz or between 500Hz and
5000Hz in "X10"mode.
X-SELECT: the X-SELECT switch indicates how many times you have to multiply the LOW PASS or HIGH
PASS potentiometer value.
+12V: the power supply switch +BATT is dedicated to receive the power supply cable ensuring the link
between the amplifier and the battery positive (+) terminal.
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