Can single loudspeakers be optimized with FIRmaker?
This depends on the type of loudspeaker. FIRmaker can optimize the coverage of a column loudspeaker, or any other single loudspeaker that has multiple drivers operating in the same frequency region.
Theoretically it would be possible to use the FIRmaker algorithm as a simple tool to generate FIR-based crossover filters for conventional loudspeakers. However, FIRmaker was originally not intended as an optimization tool for a loudspeaker with only one, or very few, drivers operating in the same pass band (frequency range).