I have some experience with few Monacor drivers. I would recommend do not waste your time tracing spl, as their datasheet is completely unreliable.
If you don't have equipment to measure them then try to find some online sources.
Heißmann-Acoustics, Hifitest.de (Klang & Ton), Hifi-Selbsbau.de, diBirama.Altervista.org.
BTW what you're trying to build - home hifi, PA speakers or car audio?
Regards Georgi
If you don't have equipment to measure them then try to find some online sources.
Heißmann-Acoustics, Hifitest.de (Klang & Ton), Hifi-Selbsbau.de, diBirama.Altervista.org.
BTW what you're trying to build - home hifi, PA speakers or car audio?
Regards Georgi