Always on the lookout for interesting refurb projects, I've come across a pair of these 1970s US phased array loudspeakers which need a little bit of TLC, so I thought it would be fun to document the repair process. They've had a relatively easy life, on the end of a Naim 160 power amp, mainly playing opera, but hadn't been touched in a while, so I was interested to see what lay beneath...