20-EN
When the subwoofer is on, you can adjust the subwoofer output level
(refer to “Adjusting Subwoofer Level/Bass Level/Middle Level/Treble
Level/Balance (Between Left an d Right)/Fader (Between Front and
Rear)/Loudness/Defeat” on page16).

Setting item: SUBWOOFER

Setting contents:

SUBW OFF / SUBW ON (Initial setting)

SUBW OFF:
No subwoofer signal is output from the Subwoofer RCA
Connectors (refer to “Connections” on page50).
SUBW ON:
The subwoofer signal is output from the Subwoofer RCA
Connectors (refer to “Connections” on page50).
The Low Pass Filter on this unit can be adjusted to suit your personal
taste.

Setting item: SUBW LPF

Setting contents:

LPF OFF (Initial setting) / LPF 60 (Hz) / LPF 80 (Hz) /

LPF 120 (Hz) / LPF 160 (Hz)

All frequencies lower than the selected cutoff are output.
The subwoofer output phase is toggled between SUBWOOFER
NORMAL (0°) and SUBWOOFER REVERSE (180°). Depending on the
installation location of your subwoofer, one of these settings may sound
better than the other.

Setting item: SUBW PHASE

Setting contents:

NORMAL (Initial setting) / REVERSE

When the subwoofer is on, you can select either SYS 1 or SYS 2 for the
desired subwoofer effect.

Setting item: SUBW SYS

Setting contents:

SUBW SYS 1 / SUBW SYS 2 (Initial setting)

SUBW SYS 1:
Subwoofer level changes according to the main volume setting.
SUBW SYS 2:
Subwoofer level change is different from the main volume setting.
For example, even at low volume settings, the subwoofer is still
audible.

Connecting to an External Amplifier (POWER IC)

When the internal amplifier is not being used, sound quality can be
improved by turning off its power supply.

Setting item: POWER IC

Setting contents:

OFF / ON (Initial setting)

OFF:
Use this mode when the line output of this unit is used to drive an
external amplifier. In this setting, the head unit’s internal amplifier
is turned OFF and cannot drive speakers.
ON:
The speakers are driven by the built-in amplifier.
OFF:
ON:
Note
• No sound is produced by the system when the power output is set to
OFF.
Turning Subwoofer ON/OFFAdjusting the Low Pass FilterSetting the Subwoofer PhaseSetting the Subwoofer SystemExternal Device
Front
Left
Amplier
Front
Right
Rear
Left
Amplier Rear
Right
Speakers
SPEAKER
RIGHT FRONT Front
Right
SPEAKER
RIGHT REAR Rear
Right
SPEAKER
LEFT REAR Rear
Left
SPEAKER
LEFT FRONT Front
Left