In accordance with some embodiments of the present disclosure, a process for determining a direction vector of a sound source is described. Each chicklet defines at least a waveguide extending between the mounting and contacting surfaces. The receiver is characterized in that it further comprises a voltage to current converter for receiving the first signal and generating the second signal as a current indicative for the first signal. The cover plate also includes a first insulating means, where the first insulating means prevents the first conducting strip from contacting other conducting materials. An input signal includes a first series of pulses defining the desired load current waveform in accordance with a desired modulation scheme. The DC signal is then sent to a controller that determines if the amplitude of the signal is above a predetermined threshold, which indicates a problem with the balance of the compressor.