Rb enh (rear bass enhancer), Sw direc (subwoofer direct connection), Display setup – Sony MEX-N4000BT User Manual
Page 18: Bt (bluetooth) setup, Display setup bt (bluetooth) setup
 
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RB ENH (rear bass enhancer)
Rear Bass Enhancer enhances the bass sound by 
applying a low pass filter setting to the rear 
speakers. This function allows the rear speakers 
to work as a subwoofer if one is not connected. 
(Available only when [SW DIREC] is set to [OFF].)
RBE MODE (rear bass enhancer mode)
Selects the rear bass enhancer mode: [1], [2], [3], 
[OFF].
LPF FREQ (low pass filter frequency)
Selects the subwoofer cut-off frequency: [50Hz], 
[60Hz], [80Hz], [100Hz], [120Hz].
LPF SLOP (low pass filter slope)
Selects the LPF slope: [1], [2], [3].
SW DIREC (subwoofer direct connection)
You can use the subwoofer without a power 
amplifier when it is connected to the rear 
speaker cord. (Available only when [RBE MODE] 
is set to [OFF].)
Be sure to connect a 4 - 8 ohm subwoofer to 
either of the rear speaker cords. Do not connect 
a speaker to the other rear speaker cord.
SW MODE (subwoofer mode) 
Selects the subwoofer mode: [1], [2], [3], [OFF].
SW PHASE (subwoofer phase) 
Selects the subwoofer phase: [NORM], [REV].
SW POS* (subwoofer position)
Selects the subwoofer position: [NEAR], 
[NORMAL], [FAR].
LPF FREQ (low pass filter frequency) 
Selects the subwoofer cut-off frequency: [50Hz], 
[60Hz], [80Hz], [100Hz], [120Hz].
LPF SLOP (low pass filter slope) 
Selects the LPF slope: [1], [2], [3].
S.WOOFER (subwoofer)
SW LEVEL (subwoofer level)
Adjusts the subwoofer volume level: 
[+10 dB] – [0 dB] – [-10 dB].
([ATT] is displayed at the lowest setting.)
SW PHASE (subwoofer phase)
Selects the subwoofer phase: [NORM], [REV].
SW POS* (subwoofer position)
Selects the subwoofer position: [NEAR], 
[NORMAL], [FAR].
LPF FREQ (low pass filter frequency)
Selects the subwoofer cut-off frequency: [50Hz], 
[60Hz], [80Hz], [100Hz], [120Hz].
LPF SLOP (low pass filter slope)
Selects the LPF slope: [1], [2], [3].
HPF (high pass filter)
HPF FREQ (high pass filter frequency)
Selects the front/rear speaker cut-off frequency: 
[OFF], [50Hz], [60Hz], [80Hz], [100Hz], [120Hz].
HPF SLOP (high pass filter slope)
Selects the HPF slope (effective only when [HPF 
FREQ] is set to other than [OFF]): [1], [2], [3].
AUX VOL (AUX volume level)
Adjusts the volume level for each connected 
auxiliary device: [+18 dB] – [0 dB] – [-8 dB].
This setting negates the need to adjust the 
volume level between sources.
BTA VOL (BLUETOOTH audio volume level)
Adjusts the volume level for each connected 
BLUETOOTH device: [+6 dB] – [0 dB] – [-6 dB].
This setting negates the need to adjust the 
volume level between sources.
* Does not appear when [SET F/R POS] is set to [OFF].
DISPLAY Setup
DEMO (demonstration)
Activates the demonstration: [ON], [OFF].
DIMMER
Changes the display brightness [ON], [OFF].
ILLUM (Illumination)
Changes the illumination color: [1], [2].
AUTO SCR (auto scroll)
Scrolls long items automatically: [ON], [OFF].
BT (BLUETOOTH) Setup
This setup menu can be also opened by pressing 
CALL.
PAIRING (page 7)
PHONEBOOK (page 13)
REDIAL (page 14)
RECENT CALL (page 13)
VOICE DIAL (page 14)
DIAL NUMBER (page 14)
RINGTONE
Selects whether this unit or the connected 
cellular phone outputs the ringtone: [1] (this 
unit), [2] (cellular phone).
AUTO ANS (auto answer)
Sets this unit to answer an incoming call 
automatically: [OFF], [1] (about 3 seconds), [2] 
(about 10 seconds).
AUTO PAIRING
Start BLUETOOTH pairing automatically when 
iOS device version 5.0 or later is connected via 
USB: [ON], [OFF].