Paradigm Studio 100s are 91dB sensitivity and 8 ohms; on paper, one of the easiest speakers to drive. Since a 3dB increase required doubling the power, if an 85dB speaker needs 400W, then the 91dB speaker would only need 100W. Do owners of 85dB speakers need/use 400 watts? No, because there are very few owners of 300+ watt amps; and there are 85dB speakers out there. Conversely, if the 91dB speaker needs 200W, then the 85dB speaker needs 800W continuous.
I don't remember the exact increase in power for doubling the distance, but I'll use the same doubling the power until someone else can confirm.
1M/1W = 91dB
2M/2W = 91dB
4M/4W = 91dB (so this is very loud continously at 12 feet)
4M/8W = 94dB (louder)
4M/16W = 97dB
4M/32W = 100dB...continuously. Extremely loud.
Let's stop at 32 watts for now. And this is ONE speaker, not two or three or seven contributing to the total SPL. The 8 ohm load is not an issue for just about all amps, and most receivers.
I don't remember the exact increase in power for doubling the distance, but I'll use the same doubling the power until someone else can confirm.
1M/1W = 91dB
2M/2W = 91dB
4M/4W = 91dB (so this is very loud continously at 12 feet)
4M/8W = 94dB (louder)
4M/16W = 97dB
4M/32W = 100dB...continuously. Extremely loud.
Let's stop at 32 watts for now. And this is ONE speaker, not two or three or seven contributing to the total SPL. The 8 ohm load is not an issue for just about all amps, and most receivers.
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