RCA multicell horns from the late 1930’s have been an essential part of the Oswald’s Mill reference system for over 20 years.
These are very large, 300hz horns damped with hemp and tar, powered by what might be the greatest sounding field coil compression driver ever made, the RCA MI-1428B, on dual throats, which further reduce distortion. Very few people alive have ever had the experience of listening to these incredible devices






