If I could help a bit here...
What is the intended bandwidth for these front speakers?
Aside from acoustic performance, from a reliability standpoint, you want something that handles humidity, extreme temps, and UV radiation well. For these reasons, aluminum cones/domes work best, with synthetic rubber surrounds. SBR-coated cloth is robust too. From the small size, I take it bass output isn't important. Maybe 300-ish Hz and up? Btw, a simple series capacitor is not a good way to cross-over such speakers; much better an active crossover with a dedicated stereo amplifier (warning - $$ involved.)
If you're not fussy about performance, however, I would still pay attention to shopping for robust materials. Paper is tolerable, but barely. Plastics, most often PP for this application, don't perform well. Think of plastic dashes, which often crack. Aluminum is your best choice.
Last edited by MAP; 10/27/22 10:59 PM.