Go find me a 95db/1w/1m car audio speaker. Also keep in mind 1 watt at 4ohms is actually half a watt given constant voltage at 8ohms, which is what the rest of the world goes by when comparing speakers. So really, you have to subtract 3db's if you want actual effeciency. Given most of the mids tiny coils, power compression makes actual RMS vs potential output due to RMS a fantasy anywya so that's fair. Most mids clock in well under 92, which is like 89 in all actuality.im pretty sure even the lowest end mbquarts are at 85 but most are around 90-95 same with their amps they are all 95+ db sn ratio
Regardless my point is maximizing the power from most amps wont' get most speakers any louder, just hotter. If you want louder speakers they need to be more effecient, period.