January 31, 2019
In January 2019, Vance Dickason characterized the 475PB 1" compression driver from Radian Audio Engineering. This was the second ferrite motor compression driver from Radian to be featured in Test Bench, following the 745PB, covered in the December 2018 issue. The Radian 475PB has a similar set of features as Radian’s 745PB and includes a 1” throat diameter, a 134 mm × 19 mm ferrite magnet motor, a high-temperature 44.5 mm (1.7”) diameter polyimide voice coil former wound with copper-clad aluminum edge-wound ribbon wire voice coil, 50 W AES power handling above 800 Hz and 100 W program power handing.
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