Graphic Equalizer

A 7 band graphic equalizer is part of this radio. Use the levers to set the bass, midrange and treble until the desired sound quality is achieved. Slide the levers up to boost or down to reduce the frequency range. The following levers will adjust the bass:
^ The 40
^ The 100
^ The 250
^ The 625

The 4K and the 12K control the treble.

The 1.6K is midrange. The 1.6K lever may be set in the middle position and then the other levers may be moved until a satisfactory amount of bass and treble is achieved