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Old 01-17-2013, 10:41 AM   #168
luan87us
Scooby Specialist
 
Member#: 335013
Join Date: Oct 2012
Chapter/Region: RMIC
Location: SL,UT
Vehicle:
2013 Premium WRX 5dr
WRB

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Quote:
Originally Posted by wondras View Post
YES, WE CAN!

I just picked up a 2013 Crosstrek with the CM621UB HU. (Do I get partial credit for having most of an Impreza?) By piecing together info from various posts here, the service manual, and documents filed with the FCC, I figured out that it *is* possible to disable both the loudness and fixed EQ.

To turn loudness on or off:

With the unit ON, press and hold 1, 6, and TUNE (right knob.) The display shows LOUD OFF or LOUD ON.



To disable fixed EQ:

With the unit OFF, press one of these combinations of buttons:

1 + 2 + TUNE for SEDAN
1 + 3 + TUNE for WAGON
1 + 4 + TUNE for THROUGH MODE



With these "features" disabled, it sounds significantly less awful, especially at lower volume levels. This should make it a much better candidate for use with upgraded speakers, or a line out converter and amps. From the schematics, I think it would be fairly easy to add proper RCA line outputs as well.

I don't know if these keys will work on earlier models, but hopefully they do.

Fantastic forum you've got here!
Just want to confirm this works on 2013 WRX HU.
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