Analog, Active Crossover Circuit for Two-Way Loudspeakers


Design files


This TI Verified Design implements an analog active crossover solution for two-way loudspeakers which is suitable for recording studios or home high-fidelity systems. The woofer signal pathway includes a low-pass shelving circuit for baffle step compensation and a 4th-order Linkwitz-Riley low-pass filter. The tweeter signal pathway includes a 4th-order Linkwitz-Riley high-pass filter, 3rd-order all-pass filter for time alignment, and output attenuation and buffering.

  • Implements a 4th-order Linkwitz-Riley crossover for two-way loudspeakers
  • Professional audio levels (+4dBu/1.228Vrms)
  • Low-pass shelving circuit for baffle step compensation
  • 3rd-order all pass filter for time alignment
  • Utilizes OPA1602/1604 low noise operational amplifiers

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDR326.PDF (105 K)

Detailed schematic diagram for design layout and components

TIDC033.ZIP (14941 K)

Detailed schematic diagram for design layout and components

TIDR327.PDF (69 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC196.ZIP (3022 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Audio op amps

OPA1602Dual, SoundPlus™ high-performance, bipolar-input audio op amp

Data sheet: PDF
Audio op amps

OPA1604Quad, SoundPlus High-Performance, Bipolar-Input Audio Op Amp

Data sheet: PDF

Start development


Support software

TIPD134 Simulation — TIDC222.ZIP (11847 K)

Technical documentation

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Type Title Date
* User guide Analog Active Crossover Circuit for Two-Way Loudspeakers Design Guide Jan. 08, 2014

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