Nova-8B 12-Inch Speaker System (400-4026) Hints and Tips Faxback Doc. # 31595 This unit came as a system or as a component of a system. Quadradial or Quatravox is a 4-channel synthesizer. Switches on rear of amplifier (i.e., switch/unswitch) turn on or off other component attachments. SPEAKER TONE SWITCHES Two switches are located on the rear panel. One is marked MIDRANGE and the other HIGH FREQ. Setting a switch to NORMAL will yield a flat response. Setting a switch to LOW will decrease the frequency and setting the switch to HIGH will increase the frequency response. These switches may be used to adjust the speaker to your room acoustics. (IR-03/25/96)