Perceived loudness change can be calculated as:
k^(1/3.5) where k is a ratio of powers.
(500/400)^(1/3.5) = 1.066 (6.6% increase).
I doubt that you can hear that.
You want "better". If you need more sensitivity you will be 2.03dB "better" with 29dB/400W
k^(1/3.5) where k is a ratio of powers.
(500/400)^(1/3.5) = 1.066 (6.6% increase).
I doubt that you can hear that.
You want "better". If you need more sensitivity you will be 2.03dB "better" with 29dB/400W