Most hi-fi enthusiasts have heard of the BBC-designed LS3/5A speakers. This tiny monitor was introduced in 1975 and has built a cult following thanks to its natural way with vocals and terrific stereo imaging. Given its small size and age, it will come as no surprise that it has limitations too, with restricted large-scale dynamics, an inability to play loud and limited bass reach, the most obvious.
The BBC also designed a bigger, more ambitious option, the LS5/9. It was released eight years after the LS3/5A and was intended to serve as a critical-listening monitor in modestly sized studios where the company’s bigger models just wouldn’t work. Its job was to allow the sound engineers to optimise all aspects of the broadcast/recording from microphone placement to overall sonic balance.
