How to remove audio balance control from this schema
simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1. More complete circuit of stereo volume and balance control.

The balance circuit works by partially shorting the top of R1 and R3 to ground. For this to work there must be some source resistance from each of the pre-amplifiers feeding R1 and R3 - otherwise the preamplifiers would maintain the volume level despite the increased load of R2 to ground (fully left) or R4 to ground (fully right).

When the balance control is adjusted one channel's volume will decrease while the other increases. Thus the overall volume is maintained while the balance is changed.

If the balance potentiometer is removed there should be an increase in volume from both channels. This should not present a problem.

If the original balanced volume level is to be maintained then a pair of 50 kΩ resistors to replace the pot would be perfect. 47 kΩ is the nearest standard value and you won't hear the difference.