Application circuit using dual power supplies

TA7630P can be powered by either single power supply or dual power supply. When dual power supply is used, the power supply
voltage range is ±4~±7V.
    Figure 4-30 is the application circuit when dual power supply is used . In the circuit, pin 5 of IC outputs the reference DC control voltage, pin 7 is the balance control input terminal, and the corresponding RPi is the balance control potentiometer; pin 8 is the volume control terminal, and RPz is the volume potentiometer; pins 9 and 10 are respectively are the tone control terminals, and the top, bottom, and bottom are the treble and bass control potentiometers respectively. The bass turning frequency of this circuit is determined by the capacitor     connected to pin 41 3 ; the treble turning frequency is determined by the size of the capacitor connected to pin 31 4. As the capacitance increases, the high and bass turning frequencies will decrease; as the capacitance decreases, the high and low turning frequencies will decrease. The bass corner frequency rises .