RW Oliver Electronics opened its doors in 1975 in Winnipeg, Manitoba by Bob Oliver and Ted Telesky to design and manufacture consumer and professional loudspeakers. In 1978 RW Oliver obtained the rights to distribute Fostex professional loudspeakers, microphones, headphones and amplifiers. Subsequently, using Fostex transducers, the RWO-Fostex brand was created in 1978 and a new company, Interlake Audio, was formed to do the marketing and sales of Fostex and RWO-Fostex products..
The LS series were built in both a horizontal format for soffit mounting and a vertical format for floor standing of limited width installs. The photo above was an LS3V, vertical format.