Philips 477

Hello all, so I've been given a pair of Philips 477 "Hi-Fi" Loudspeakers but have not had luck locating info on them. They need new woofers at very least. The mids and tweets seem to be ok.
Are they worth repairing? Any idea if a generic P.E. woofer would be ok for them or do they deserve a bit better of a driver?
They seem to be built relatively well so I think it would be a shame to trash them outright. Any thoughts, opinions? Thanks!