Old VW Beetle convertibles are cool vehicles but they weren't designed for great sound. It's particularly hard to find a good spot for aftermarket speakers, but now RetroSound offers a neat solution install their VWKPBC enclosures in your Beetle's kick panels and start rocking out.
Compact, paintable enclosures
The R652N speakers have a mounting depth of less than 1-3/4", so these enclosures don't take up a lot of space. You can paint the enclosures to match your VW's interior, and each enclosure already has a cutout for the RetroSound speaker, so they'll just pop right in. These enclosures fit in 1956-70 Beetle convertibles; they will not work in hardtop Beetles or Super Beetles.