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LNGR SPKRHIFI. TWO WAYS. HANDCRAFTED.
LNGR · Learning laboratory

Crossover studio

Build your signal path from optional modules.

← Learning laboratory

Getting started

  1. Start with the two-way LR4 preset and ideal drivers.
  2. Change level, polarity or delay. Observe the sum.
  3. Enable EQ, measured data or passive mode as needed.
  4. Passive: enter cutoff frequencies, size components, then edit components.
  5. Save the project as JSON and export curves or the component list.

What this version calculates

One to four ways; active Butterworth first through fourth order and Linkwitz-Riley second, fourth and eighth order; high-pass, low-pass and combined band-pass; one parametric EQ, gain, polarity and delay per branch. Passive: up to 24 ordered series/shunt R, L, C or series-RLC components per branch plus L-pad, Zobel and shunt resonance. Re/Le or imported impedance, complex FRD summation, DCR/ESR and source resistance are included.

This is a transparent design and learning calculator. It is not universal SPICE, an automatic optimiser or a power-handling certification. Component tolerances, heating, directivity and DSP hardware export are not yet included.

Further reading

Original teaching models and authored exercises. Sources provide technical background; no manufacturer measurement curves are reproduced.

Project connection · LNGR 2-PR-THT-PR

See how driver spacing, passive radiators, crossover design and measurements meet in this planning project. CNC geometry v1.2; not yet built or acoustically measured.

Open the project build log →