2007 Toyota Prius Owners Manual - Page 267

How good an audio program sounds to you is largely determined by the mix of the treble, mid−range, and bass levels. In fact, different kinds of music and vocal programs usually sound better with different mixes of treble, mid−range and bass. A good balance of the left and right stereo channels and of the front and rear sound levels is also important. Keep in mind that if you are listening to a stereo recording or broadcast, changing the right/left balance will increase the volume of one group of sounds while decreasing the volume of another. 26p261 TREB "+" or "-": Adjusts high−pitched tones. MID "+" or "-" (Type 1 only): Adjusts mid−pitched tones. BASS "+" or "-": Adjusts low−pitched tones. "FRONT" or "REAR": Adjusts sound balance between the front and rear speakers. "L" or "R": Adjusts sound balance between the left and right speakers. "OK": The previous screen returns. Type 1 Type 2 250