Focal AP 4.380 Manual De Uso página 12

AP 4.380
U s e r m a n u a l
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Control & connection panels
X-OVER: This switch allows you to activate a high-pass crossover (HPF), a low-pass crossover (LPF) or unfiltered mode
(FULL) for the 3/4 or rear channels.
GAIN: The GAIN rotating dial is used to adjust the level of the signal entering the amplifier. WARNING: increasing the input
gain does not mean more power, but more noise. Optimising the audio chain performance consists of applying maximum
gains as early as possible upstream in the audio chain, and minimum gains downstream. This dial should be adjusted accor-
ding to the source level (line output level). Start by setting the amplifier gain to its lowest level. Gradually increase the level
(volume) of the source to 3/4. Increase the amplifier's gain level to the desired maximum volume. Lower the level in the event
of distortion.
INPUT: This connector is dedicated to the high and low level signal input.
LPF: A low-pass crossover is used to remove unwanted frequencies from a signal above a set cut-off frequency.
BASS BOOST: The BASS BOOST rotary dial allows you to raise the bass level to +6 or +12dB. The central frequency is 50Hz.
Amplifier run time
Avoid running the amplifier for a long period of time without starting the vehicle. It could drain the battery.
Ventilation
Never cover the top of the amplifier to ensure it does not overheat. Avoid enclosing or covering the amplifier in its immediate
area of installation.
SPECIAL PRECAUTIONS
Maintenance
To look after the AP 4.380 amplifier, simply dust using a dry cloth. If the amplifier is marked, use a damp cloth. Never use
solvents, detergents, alcohol or corrosive products, scrapers or scouring utensils to clean the surface of the speaker drivers.
Conditions of warranty
All Focal loudspeakers are covered by warranty drawn up by the official Focal distributor in your country. Your distributor can
provide all details concerning the conditions of warranty. Warranty cover extends at least to that granted by the legal warranty
in force in the country where the original purchase invoice was issued.