Clarion DPX2250 ユーザーズマニュアル
APX/DPX Amplifiers
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English
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
• 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.
two acoustic signals.
Equalizer: Component that boosts or cuts sound signal frequencies to improve the
quality of the sound.
quality of the sound.
Gain control: gain is the amount of amplification (voltage, current or power) of an
audio signal expressed in dB.
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.
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.
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.
faster the frequency drops off.
APX-DPXOwnersManual.pmd
2006-03-14, 21:47
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