replacing crossover with external one
I did that with my Infinity RSIIb's and it sounds excellent. An external crossover allows you to use much larger (better) components and to space them well apart to prevent crosstalk interference between crossover components and between the crossover and the speaker magnets. Here is a picture with the crossover box open: External Crossover and here is another picture of the system: RSIIb Speakers . |
Moving the crossover outboard is a great idea, as Ait wrote. Mine had enough room for much-higher-quality (= bigger) components, so the board is original. The board is hung from the wooden frame using long brass screws and hard-plastic tubing as spacers. http://i89.photobucket.com/albums/k220/jeffreybehr/Avanti%20IIIs/X-overclosefromright_1280w.jpg . |
The L300 was a good speaker and is quite collectable, so you might make sure your changes are reversable. But I think that JBL's crossover designs of the era are a weak point, and there are significant improvements to be had with revisions. For a in-depth discussion of the specifics, I'd inquire with the guys at the vintage JBL forums: http://audioheritage.org/vbulletin/ |
