Jacob Jensen designed a compact bookshelf loudspeaker for Bang & Olufsen – the CX50 that complimented their 70s range of hifi audio equipment. The 100cm woofer suffers from the dreaded ‘foam rot’ which causes the surrounds to disintegrate. Oddly the driver still works and is only evident at higher volumes.

Replacement foam surrounds are available. I bought two types both from dutch suppliers and both seemed a little too stiff. Here’s a restoration pictory beginning with the loose crossover coil reattached with PVA:-

P1040038 P1040040 P1040044 P1040046 P1040050 P1040053 P1040054 P1040055 P1040056 P1040058