Lobing is an inherent consequence of combining multiple sound sources that radiate the same frequencies. It affects both loudspeaker systems with multiple drivers and arrays of loudspeakers. The physics is straightforward: at any observation point, the signals from each source arrive with different path lengths, creating frequency-dependent phase relationships that produce constructive interference (lobes) and destructive interference (nulls). In a two-way loudspeaker, lobing is most prominent at the crossover frequency where both the woofer and tweeter are contributing significant energy. If the acoustic centers of the two drivers are separated by half a wavelength at the crossover frequency, the off-axis response has a deep null. Speaker designers minimize this by choosing crossover frequencies where the driver spacing is less than one wavelength and by optimizing the crossover filter alignment. In loudspeaker arrays, lobing becomes more complex. Multiple cabinets stacked vertically create a narrowing vertical pattern (useful for audience coverage) but also generate side lobes where energy leaks in unwanted directions. Modern line array design uses closely spaced sources (less than half wavelength at the highest frequency) to minimize side lobes. Horizontal lobing from multiple speakers covering the same zone is a common system design error. Two speakers aimed at the same area from different positions create severe comb filtering and lobing in the overlap zone. The solution is to minimize overlap or to accept a narrow crossfire region. SonaVyx's speaker measurement tool captures multi-angle frequency response, allowing you to identify lobing patterns. The polar plot display reveals the angular positions of lobes and nulls at each frequency.