Ticking Noise When Engine On; Glossary - Clarion APX4360 APX4360 APX4360 Owner's Manual

Ticking noise when engine on

• High voltage ignition problem: Check for problems with the ignition system and
replace components as required.
• Cracked distributor caps
• Carbon traces on plug wires
• Loose spark plugs

7. Glossary

Crossover : A device that limits the range of frequencies sent to a speaker or amplifier.
dB : decibel, a measurement of the relative difference in power or intensity between
two acoustic signals.
Equalizer : Component that boosts or cuts sound signal frequencies to improve the
quality of the sound.
Gain control : gain is the amount of amplification (voltage, current or power) of an
audio signal expressed in dB.
Hz : Abbreviation for Hertz, a unit of frequency equal to one cycle per second.
IVS : Input Voltage Selector
Octave : the musical principle of dividing sound frequencies into the eight notes of the
musical scale.
Ohm : unit of electric resistance
PFS : Precise Frequency Selector
RCA input/output : port through which sound travels in and out of the system; "RCA"
refers to the type of connector, which was first manufactured by the Radio Corporation
of America.
Slope : how fast the sound gets quieter rated in dBs. The higher the dB number, the
faster the frequency drops off.
APX/DPX Amplifiers 23