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.
Model | APX4240 | APX2120 | APX1300 |
Maximum power output | 400W | 200W | 400W |
Continuous rated power1 | 60W x 4 | 60W x 2 | 300W x 1 |
Typical power in bridged mode2 | 100W x 2 | 100W x 1 | N/A |
Typical power in | 90W x 4 | 90W x 2 | 400W x 1 |
IM distortion | ≤ 0.1% | ≤ 0.1% | ≤ 0.1% |
S/N | ≥ 85dB | ≥ 85dB | ≥ 85dB |
Floor noise | N/A | N/A | N/A |
Channel separation | ≥ 60dB | ≥ 60dB | N/A |
Frequency response | |||
Line level input sensitivity | 200mV to 5.5 Volts | 200mV to 5.5 Volts | 200mV to 5.5 Volts |
Speaker level input sensitivity | 2V to 9 Volts | 2V to 9 Volts | 2V to 9 Volts |
Input impedance | 22K Ohm | 22K Ohm | 22K Ohm |
Allowable battery voltage | 9.6 to 15.6 Volts | 9.6 to 15.6 Volts | 9.6 to 15.6 Volts |
Size | 13"x10 7/8"x2 3/4" 10 5/8"x10 7/8"x2 3/4" 13"x107/8"x2 3/4" | ||
1THD ≤ 0.1%,
2THD ≤ 0.1%,
APX2120/APX4240/APX1300 | 17 |
AMPSOwnersManual.pmd | 17 |
