Quote:
Originally Posted by
FMW
That is even an overly conservative calculation because it would only be correct for an outdoor system or one in an anechoic chamber. Rooms add quite a bit of gain to the sound presentation. I suspect you could go well past 100 db with less than 100 watts in a real room. If home theaters needed 200 watts per channel, that is what the equipment would have.
88dB sensitivity for the E55Ti:
Assume we sit 10' from the speakers, that's about a 10dB loss.
1 watt = 78dB
2 watts = 81dB
4 watts = 84dB
8 watts = 87dB
16 watts = 90dB
32 watts = 93dB
64 watts = 96dB
128 watts = 99dB
You are going to need a substantial receiver to deliver over 120 watts per channel with all channels driven, and that won't get you the 20dB headroom for true reference levels. The average receiver is not designed to deliver reference levels in a theater, that's why people have high efficiency horns and discrete amps to hit those levels. Sure you gain some SPL from the room, but the point of my post was to show the relationship between power and SPL.