Originally Posted by ymalmsteen887
Could someone explain to me why those tv speakers can get as loud as they do? Its loud enough to be unpleasant and vibrates the tv like crazy. The towers can get loud enough that high pitches physically hurt the ears but I would have no use for that advantage
Ah, now we're getting somewhere, to the genesis of the issue.
Do you have any idea what towers those were? 3" drivers isn't all that large. 5" is usually standard for bookshelves.
The TV can be loud enough to be unpleasant and vibrate like crazy because distortion sounds "loud". What is the make/model of your TV?
Here's what happens when you give speakers more power than they can handle. They start distorting, maybe even clipping. When clipping happens, your THD goes through the roof because a clipped waveform generates harmonics like crazy.
For example, here is a spectrum of a 60Hz sine wave vs a 60Hz square wave (full clipping)
In this picture, for the sine wave (top) we see a small harmonic at 120Hz, and another at 240Hz. Ignore the peak at 190Hz as that is not a harmonic. That's fan noise from the room I am in.
On the bottom of this picture, the square wave is generating strong harmonics at 180, 300, and 420Hz. But it's actually worse. I widened the spectrum out a bit...
Going all the way out to 2KHz, we can clearly see the first 16 odd harmonics of this clipped 60Hz waveform! So not only are we getting 60Hz, we are also getting sound output at 180, 300, 420, 540, 660, 780, 900, 1020,1140, 1260, 1380, 1500, 1620, 1740, 1860, and 1980Hz!
This is where bigger speakers come into play. If you drive small speakers into clipping, they will sound much louder, and much more annoying, because of the distortion. Recall that a complex sinewave has many, many different frequencies in it. If you clip all those, you are going to get hundreds if not thousands of odd harmonics coming through the speakers. That turns sound into noise.
Bigger speakers can handle much more power than the small ones. So you can have them louder without them being noisier.
Another advantage of separate speakers is the wider you can space them apart, the larger your "soundstage" will be. So your stereo effects will be much ore enveloping.
Your room also can play a part in how speakers sound. If you have hardwood floors with no carpet, and a vaulted ceiling, most any sound system will sound bad. This is because as the room echoes, those echoes become noise. So carpet and furniture in general can help.
Out of curiosity, what is your native language? I moved to Germany and got a basic understanding of the German language, but I can't imagine being able to carry on a conversation as complex as audio theory with a native German speaker. So you're doing better than I am!