SB Acoustics SB12PACR-00 Passive Radiator

The SB12PACR-00 Passive Radiator from SB Acoustics is a carefully engineered component designed to elevate the low-frequency performance of your loudspeaker system. By replacing a conventional port in a sealed enclosure, this passive radiator delivers deep, articulate bass without the turbulence or chuffing often associated with ported designs. It is an ideal solution for compact speaker builds where space is at a premium, allowing you to achieve extended low-end response in a smaller cabinet.

This passive radiator excels in applications such as high-fidelity bookshelf speakers, subwoofer systems, and custom automotive audio installations. Its ability to complement a small sealed enclosure makes it particularly suitable for projects where a traditional port would be too long or impractical. The SB12PACR-00 works seamlessly with an active driver to enhance overall bass output and clarity.

Technically, the unit boasts a resonance frequency of just 33 Hz and a maximum linear excursion (Xmax) of 9 mm, ensuring controlled, distortion-free movement. The cone area (Sd) is 50 cm², while the moving mass (Mms) of 19.2 grams and mechanical compliance (Cms) of 1.21 mm/N contribute to its precise behaviour. The plastic basket is lightweight yet robust, and the four mounting holes simplify installation. With a nominal diameter of 122 mm and a depth of 38.3 mm, it is a compact yet powerful addition to any serious audio project.

In summary, the SB12PACR-00 offers a refined way to enhance bass extension, combining thoughtful engineering with practical design for audiophiles and DIY enthusiasts alike.