Speaker Crossover Calculator with Real Driver Impedance
Design a two-way passive crossover with Butterworth, Bessel or Linkwitz–Riley filters. Compare real driver loading, Zobel correction, L-pad losses and the modeled amplitude and phase sum.
Instruments, speakers and rooms: string tension and fret layout, crossovers and amplifier power, room modes and reverberation, sound insulation of walls, resonators and tuned bars. Each calc shows the acoustics behind the numbers.
Design a two-way passive crossover with Butterworth, Bessel or Linkwitz–Riley filters. Compare real driver loading, Zobel correction, L-pad losses and the modeled amplitude and phase sum.
Calculate 12-TET fret spacing and exact fanned-fret geometry, with neutral fret, string spread, known compensation offsets, coordinate tables, and a calibrated drawing.
Calculate axial, tangential and oblique room modes, compare octave-band RT60, and size replacement treatment. Explore pressure nodes, listener position and trial bass-trap locations.
Calculate string tension for any tuning and per-string scale length. Design a balanced guitar or bass set from target tensions using published unit weights.
Estimate listener SPL and amplifier power with crest-factor headroom. Check speaker cable loss and damping across a driver's impedance curve.
Design sealed and ported speaker boxes from Thiele–Small parameters. Compare bass response, cone excursion, port air speed and cabinet dimensions.
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