Where the Competition begins
Colorado Usaci SPL & Streetbeat Record holder!
Loudspeakers are very simple devices that follow very simple physics. Signals combine differently when they are in phase than when they are not. You can have what is called correlated and uncorrelated sound sources. When two output waveforms are in exact phase and frequency, they are correlated and combine as scalar quantities. This normally yields you 6dB of output. When two output waveforms are not in perfect phase BUT the same frequency, they yield between 3 and 6dB of output, OR the RMS (root mean square) value of the 6db gain. This is basic physics from the fundamentals of audio filter theory and is why what you're saying is completely false. When you take two signals which will always be out of phase and of different frequencies as they are playing different source material, the output does NOT add together. If you don't believe this: pg. 111 of the Loudspeaker Design Cookbook by Vance Dickason, 6th edition. It was originally derived from a paper by A.N. Thiele as well.
Think about this: when you're in a car demoing or at a concert and want to talk to someone, what do you have to do? You have to yell. Why? Because the output from your vocal chords does not add to the output of the music and as such, you need to speak at a greater amplitude than the background noise. The overall loudness is not getting any louder by you talking because your voice and the background noise are completely uncorrelated and are canceling due to the issues I said above. You need output greater than the noise threshold for it to be audible, so you yelling at 130db to your friend in a 125db car still registers as 130db to your friend's ears because that's the necessary loudness level for him to pick up what you're saying.
How are you possibly 33 and acting so immature? I mean really, I'm always up for a good debate, but someone who is in his 30s should be nowhere near as childish as you are.
Actually, I disagree on some points.
Here's an easy example. Think of the Beats phenomenon. You have 2 waves that are similar in frequency(f) and are equal in amplitude(A). At points they will cancel out completely, and at other points they will have a cumulative amplitude of 2A, with a peak to peak beat frequency of |f1-f2|. This can be applied to any two frequencies, and many more actually, but it isn't as easy. This operation is the basic principal of AM transmission.
Regardless of the frequency, it will shift in and out of phase with another signal.
Wave and signal can be used synonymously as long as both of them are sinusoidal.
We've had the same issues at local shows with the AC160. Trunk car with 2 12's puts up a 168, then they readjust and a bunch of us with walls all did a 135 as it wouldn't go any higher
x50 on building a street driven vehicle with fuses as no one plans for a crash but they happen and I'd rather not do a free fireworks show for anyone around when it happens
Pressure > khz
I've always forseen the TL to be more of a pressure gauge like those on air compressors and the like to measure the PSI not audible loudness to the ear.
There's a video on ROE somewhere, where a guy screamed at the top of his lungs into a mic and it only measured like 140s. Then blew into it and it did like 170's IIRC.
And AM transmission is multiplying two frequencies together, not adding them together:
x(t) = A*[1+m*cos(2*pi*fm*t]*cos(2*pi*fc*t)
where m is the modulation index, fm is the frequency of the modulated signal and fc is the frequency of the carrier signal (don't ask me how I remember this from lab ). Now I could be wrong, and please correct me if I am, but I don't think that playing two tones of different frequencies yields a modulated output signal. And either way, the output amplitude is still the amplitude of larger signal: