DIY Transmission Line Jordan 92's

About the DIY Transmission Line Jordan 92's

The DIY Transmission Line Jordan 92's is a single-driver loudspeaker project based on the Jordan JX92S 5" metal cone fullrange driver. The design uses a transmission line (T-Line) enclosure with a trapezoidal (nearly triangular) cross-section, optimized for corner placement and reduced internal reflections. This enclosure type is less critical than bass reflex designs and allows for tuning by varying the density of damping material inside the line, adapting the low-frequency response to different room placements and amplifier characteristics. The Jordan JX92S driver is known for its linearity, wide frequency response (covering almost nine octaves), low distortion, and a maximum excursion (Xmax) of 9 mm. The transmission line design typically achieves bass extension down to approximately 45 Hz, with some implementations reaching as low as 35 Hz depending on enclosure specifics. The project is popular among DIY enthusiasts for its musicality, coherence, and adaptability, making it suitable for small to medium rooms without necessarily requiring a subwoofer. The Jordan JX92S driver has been discontinued but remains favored for its unique sound characteristics in transmission line applications.