...yeah, well, it seems like they might either be JBL speakers or Jensens, then? I think my 412L dates from around 1979/80, so I was just wondering what the best replacement cones might be if things ever needed changing. I've heard good things about Eminence Wizards, although a tech at Eminence warned me off using these speakers in any enclosure taking a signal from a bass amp. (I realise the 412L was supposed to be a guitar enclosure but it gives me a really nice four-string tone...a particularly sweet bottom-end response when coupled with my Coliseum Bass amplifier.)