No, its just that the zero-point isn't within the output voltage range of the amp - you need to trim the bridge offset to get it within the active range - various trim circuits are out there on the web, might be as simple as one potentiometer.
No, its just that the zero-point isn't within the output voltage range of the amp - you need to trim the bridge offset to get it within the active range - various trim circuits are out there on the web, might be as simple as one potentiometer.