CSS APR10 Passive Radiator

The CSS APR10 Passive Radiator is a meticulously engineered component designed to elevate the low-frequency performance of your speaker system. By replacing a conventional port, this passive radiator delivers deep, articulate bass without the turbulence or chuffing noises often associated with ported enclosures, making it an ideal choice for audiophiles and DIY enthusiasts seeking a cleaner, more controlled sound.

This 254mm (10-inch) passive radiator is perfectly suited for use in sealed enclosures alongside an active driver, where it enhances bass extension and overall efficiency. Whether you are building a high-fidelity home audio system, a custom subwoofer, or a compact yet powerful bookshelf speaker, the APR10 integrates seamlessly to provide a natural, room-filling low end. Its design is particularly advantageous in applications where cabinet space is limited, as it requires less volume than a traditional port to achieve similar results.

Technically, the APR10 boasts a resonance frequency of just 28 Hz, enabling impressive depth in bass reproduction. With a mechanical Q (Qms) of 7 and an equivalent volume (Vas) of 67 litres, it offers excellent damping and control. The moving mass (Mmd) of 12 grams and a cone area (Sd) of 32 cm² ensure responsive, accurate movement, while the suspension compliance (Cms) of 0.48 mm/N contributes to linear, distortion-free performance. This passive radiator is a robust solution for achieving authoritative, well-defined bass in your next speaker project.