Acoustic Research HD510 Manual De La Instalación Y De La Operación página 13

• LOW PASS FREQUENCY control: Adjust the system's tonal balance by
setting the upper frequency limit (50Hz-150Hz) for the audio signals going
to the subwoofer.
• LEVEL control: Balance the loudness (MIN to MAX) of the subwoofer
relative to the front speakers and compensate for room effects on the sub-
woofer.
• PHASE switch: Control the phase of the subwoofer relative to the front
speakers. To determine the appropriate phase setting, select either regular
(0°) or inverted (180°) and perform a sound test. Listen carefully to the
sound quality while playing a CD with low bass such as percussion or bass
lines, then select the position that produces the fullest and most dynamic
bass. You may need to adjust the LEVEL control (volume) and the LOW
PASS FREQUENCY control (crossover) after setting the PHASE switch.
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HD510