I always figured that "10" was 100% of the watts. (for the record, I believe that "watts" are tiny creatures that live in my amplifier and scream in pain at various frequencies when an electric current is passed through them). So turning it to 9 means that 90% of them are being electrocuted and at 11 you'd need to pour a few more watts into the box. 10% more as it happens. Just my take on it though.
If volume knobs were designed this way there would be lots of problems due to our hearing which is more or less logarithmic.
1) Turning the knob from 0-5 would result in a huge change in loudness...going from 5-10 would increase it by a meager 3dB. Essentially your usable volume settings would be between 0-2 or 0-3.
2) When you turn it to 10, you now have no head room and almost any signal you pass through the amp will more than likely clip it, which will in turn cause harmonic distortion which will probably blow your speakers.
Q_< wrote:Maybe it's 10 bels. So 100 decibels. That sounds about right.
So, apparently I'm the only one who read this and immediately wondered "At what distance from the source?"
No, I've just been too lazy to get into it. That's only the tip of the iceberg. dB of what? Power? Pressure? Voltage? You're thinking pressure, which you recognize is dumb b/c SPL is distance dependent, but it is also room, frequency and weighting curve dependent.