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Using Optional Equipment; Connecting Portable Audio Device; Adjusting Volume Level; Auxiliary Audio Equipment - Sony CDX-GT250MP Operating Instructions Manual

Car audio: fm/am compact disc player.
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Table of Contents
(Monaural Mode)
Selects monaural reception mode to improve
poor FM reception: "ON," "OFF."
(Low Pass Filter)
Selects the subwoofer cut-off frequency: "OFF,"
"80Hz," "100Hz," "120Hz," "140Hz," "160Hz."
(Subwoofer Phase)
Selects the subwoofer phase: "SUB NORM,"
HPF (High Pass Filter)
Selects the front/rear speaker cut-off frequency:
"OFF," "80Hz," "100Hz," "120Hz," "140Hz,"
Reinforces bass and treble for clear sound at low
volume levels: "ON," "OFF."
BTM (page 8)
*1 When the unit is turned off.
*2 When FM is received.
*3 When the audio output is set to "SUB-OUT."

Using optional equipment

Auxiliary audio equipment

By connecting an optional portable audio device
to the AUX input jack (stereo mini jack) on the
unit and then simply selecting the source, you
can listen on your car speakers. The volume level
is adjustable for any difference between the unit
and the portable audio device. Follow the
procedure below:
Connecting the portable audio
1 Turn off the portable audio device.
2 Turn down the volume on the unit.
3 Connect to the unit.
* Be sure to use a straight type plug.
Adjusting the volume level
Be sure to adjust the volume for each connected
audio device before playback.
1 Turn down the volume on the unit.
2 Press (SOURCE/OFF) repeatedly until "AUX"
"FRONT IN" or "AUX FRONT IN" appears.
3 Start playback of the portable audio device at a
moderate volume.
4 Set your usual listening volume on the unit.
5 Press the select button repeatedly until "AUX"
appears, and rotate the control dial to adjust
the input level (–8 dB to +18 dB).
Connecting cord*
(not supplied)



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  • Gary a Sidelinger Aug 16, 2015 04:07:
    how do I get the radio to work again after removing and reinstalli​ng the front panel????
    ​Please help. Driving me nuts!

    Thanks: Gary