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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.
Octave:
the musical principle of dividing sound frequencies into the eight notes of the
musical scale.
Ohm:
unit of electric resistance
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.
8. SPECIFICATIONS
Note:
The technical data and the design of the equipment may
change without prior notice for the sake of technical
improvements.
APX4241E
Maximum power output 400W
Continuous rated power * 60W x 4
Typical power in bridged mode ** 100W x 2
Typical power in 2-Ohm load ** 80W x 4
IM distortion <
0.1%
S/N (A-weighted) >
75dB
Floor noise A / N
Channel separation >
60dB
Frequency response 20Hz-20kHz full range
Line level input sensitivity 200mV to 5.5 Volts
Speaker level input sensitivity 2V to 9 Volts
Input impedance 22K Ohm
Allowable battery voltage 9.6 to 15.6 Volts
Size (L × W × H) in mm 300 × 280 × 55
* THD <
0.1%, 10Hz-20kHz, into 4-Ohms, @ 14.4V, all channels driven
** THD <
0.1%, 10Hz-20kHz, @ 14.4V, all channels driven