How much amplifier power is required at this seat?
Use the speaker's verified sensitivity basis, listener distance, target SPL and explicit peak headroom. The result is a free-field planning estimate, not an AVR, room-gain or speaker-safety guarantee.
Method
dBW = target SPL + headroom − 1W/1m sensitivity + 20 log10(distance/1m); watts = 10^(dBW/10). 2.83V sensitivity is normalized using entered nominal impedance.
Important limitation
Impedance curves, room reflections, channel loading, clipping and product ratings need exact data sheets and measurement.