elevick
Keep in mind that an 80 watt amp will only sound about twice as loud as an 8-10 watt amp (10 db increase to double perceived volume). A lot depends on the power supply driving the whole thing and what the dynamic headroom is.
The first time I heard this was from the shop that sold me the 6 x 9 Jensen triax speakers, with Pioneer AM/FM Cassette deck that I put into a z28 Camaro. 1979? ... I was around 17-18?
Nothing has changed re: needs to be 10 times the power to sound twice as loud. My taste in cars did change. American, to Japanese to German.