Fourth Order Crossover Calculator

Calculate the component values for a 4th-order Linkwitz-Riley speaker crossover using driver impedance, crossover frequency, filter section, and network topology. The calculator returns the capacitor value in microfarads for the selected section and topology.

4 Way Crossover Calculator

Estimate passive 4-way speaker crossover component values using first-order crossover points and nominal driver impedance. The calculator returns the total combined inductor and capacitor values needed across the low-pass, two band-pass, and high-pass sections.

2-Way Crossover Calculator

Calculate component values for a passive 2-way speaker crossover using the selected crossover topology, crossover frequency, and driver impedances. The result estimates the primary series component value for the low-pass and high-pass sections.

Crossover Frequency Calculator

Estimate the recommended loudspeaker crossover frequency based on the speaker’s low-frequency limit, subwoofer high-frequency limit, desired overlap, filter slope, and room size. The calculator balances safe speaker protection with practical subwoofer integration.

2 Way Crossover Calculator

Calculate component values for a passive 2-way speaker crossover using crossover frequency and driver impedance. Supports first-order and second-order Butterworth-style calculations for common capacitor and inductor sizing.

3 Way Crossover Calculator

Calculate component values for a passive 3-way speaker crossover using target crossover frequencies and driver impedances. Results are based on first-order (6 dB/octave) Butterworth-style sections: a low-pass for the woofer, a band-pass for the midrange, and a high-pass for the tweeter.

Speaker Port Area Calculator

Calculate the recommended speaker port cross-sectional area based on driver size, box volume, target tuning frequency, and intended power level. This helps estimate a port area large enough to reduce port noise while supporting the desired enclosure tuning.

Speaker Port Diameter Calculator

Estimate the recommended round speaker port diameter based on enclosure volume, tuning frequency, subwoofer size, and power level. This calculator gives a practical port diameter target for bass reflex speaker box design.

Speaker Port Velocity Calculator

Estimate air velocity in a speaker port using box volume, tuning frequency, driver displacement, number of ports, and port diameter. This helps evaluate whether a ported enclosure may experience chuffing at high output.

Port Air Speed Calculator

Calculate air velocity through a round port using enclosure volume, tuning frequency, number of ports, and port diameter. This estimate helps evaluate whether a vented speaker box port may experience excessive air speed and audible chuffing.

Port Tuning Frequency Calculator

Estimate the tuning frequency of a speaker enclosure with a round port using box volume, port diameter, port length, and the number of ports. This uses a Helmholtz-based calculation with a common end-correction approximation for flanged ports.

Speaker Box Tuning Calculator

Estimate the tuning frequency of a vented speaker box using enclosure net volume, port diameter, port length, and number of ports. This uses a common Helmholtz-based approximation for round ports and returns the box tuning frequency in hertz.

Helmholtz Resonator Calculator

Calculate the resonant frequency of a Helmholtz resonator using cavity volume, neck cross-sectional area, neck length, and end correction. The calculator uses the standard acoustic formula f = (c / (2 * pi)) * sqrt(A / (V * Leff)), where Leff is the effective neck length including end correction.

Passive Radiator Tuning Calculator

Estimate the passive radiator moving mass needed to tune a passive-radiator speaker system to a target box resonance, based on enclosure volume, target tuning frequency, passive radiator effective area, and existing passive radiator moving mass.

Slot Port Length Calculator

Calculate the required slot port length for a speaker enclosure using box volume, tuning frequency, port width, and port height. The formula estimates physical port length for a rectangular slot port based on equivalent vent area and standard bass reflex tuning relationships.

Speaker Port Size Calculator

Estimate the recommended round speaker port diameter for a vented enclosure using box volume, tuning frequency, subwoofer size, and expected power. This helps size a port to reduce chuffing while maintaining practical enclosure tuning.

Subwoofer Port Length Calculator

Estimate the required port length for a vented subwoofer enclosure using box volume, tuning frequency, port diameter, and number of ports. This calculator uses a common round-port approximation and returns the length of each port.

Speaker Box Port Length Calculator

Estimate the required port length for a bass reflex speaker box using enclosure volume, desired tuning frequency, number of ports, and port diameter. Uses a common round-port tuning approximation for inches and cubic feet.

Sub Box Port Length Calculator

Calculate the required port length for a vented subwoofer box using box volume, tuning frequency, port area, and end correction style. Useful for estimating straight port length for slot or round-equivalent ports.