Crossover Calculator

Butterworth filters provide smooth frequency response but have phase differences between drivers. Linkwitz-Riley filters maintain phase alignment between drivers, resulting in better time coherence and more accurate sound reproduction.

Choose a crossover frequency where both speakers perform well. Typically 2-4 kHz for tweeter/woofer combinations. The frequency should be in the tweeter's lower range and the woofer's upper range for optimal performance.

Different impedances are common and the calculator accounts for this. However, large differences may require additional components like L-pads to balance volume levels between drivers.

First-order (6dB/octave) crossovers are simple but provide gentle rolloff. Second-order (12dB/octave) offers better separation. Higher orders provide steeper rolloffs but require more components and careful phase matching.

These calculations are specifically for passive crossovers using capacitors and inductors. Active crossovers use electronic circuits before amplification and require different design approaches.

Component values depend on both the crossover frequency and speaker impedance. Higher impedance speakers require smaller capacitor values and larger inductor values to achieve the same crossover frequency.

A 3-way crossover adds a dedicated midrange driver between the tweeter and woofer. This provides better frequency coverage and reduces distortion by allowing each driver to operate in its optimal frequency range.

Zobel circuits help stabilize speaker impedance across frequencies and can improve crossover performance. They're especially useful with drivers that have significant impedance variations or resonant peaks.