Speaker Components

Tweeters

Tweeters

Full-Range & Midranges

Full-Range & Midranges

Woofers

Woofers

Subwoofers

Subwoofers

Waveguides

Waveguides
Crossover Parts

Polypropylene Capacitors

Polypropylene Capacitors

Electrolytic Capacitors

Electrolytic Capacitors

Iron Core Inductors

Iron Core Inductors

Air Core Inductors

Air Core Inductors

Resistors

Resistors

Assembled Passive Crossovers

Assembled Passive Crossovers
Kits and Cabinets

Home Audio Speaker Kits

Home Audio Speaker Kits

Home Theater kits

Home Theater kits

Subwoofer Kits

Subwoofer Kits

DIY Subwoofer Cabinets

DIY Subwoofer Cabinets

DIY Flat-Pack Speaker Cabinets

DIY Flat-Pack Speaker Cabinets
Speaker Hardware

Speaker Port Tubes for Precision Tuning

Speaker Port Tubes for Precision Tuning

Screws and Fasteners

Screws and Fasteners

Terminal Connectors

Terminal Connectors

Cabinet Damping and Gasket Tape

Cabinet Damping and Gasket Tape

Speaker Terminals

Speaker Terminals

Speaker Mounts and Isolation

Speaker Mounts and Isolation
DIY Extras

Buy Outs

Buy Outs

Kit Replacement Parts

Kit Replacement Parts

Speakers in Limbo - Help Decide Their Future

Speakers in Limbo - Help Decide Their Future
Brand Spotlight

Recently Viewed

Polypropylene Capacitors

Our audio-grade Polypropylene Capacitors are built to tight tolerances and constructed using premium materials, including pure polypropylene film and oxygen-free copper leads that have been pre-tinned for easy soldering. Featuring incredibly low ESR (Equivalent Series Resistance) they are designed and tested for audio signal integrity. These name brand capacitors are performance proven and trusted around the world by top speaker manufacturers in their high-fidelity speaker crossovers.

Whether you're designing a first-order crossover or a complex multi-way system, these audio capacitors provide the clarity, detail, and reliability needed for critical listening environments. Use them with confidence in any part of your crossover network to achieve a more open, natural, and dynamic sound.

We're a community of discerning audio enthusiasts who demand nothing but the best. Explore what our site has to offer and sign up to take your next audio project to new heights.