What are the sub and amplifier in a home theater system? Learn what an amplifier and sub do for your home theater system. A sub is the speaker but it does not put out any high end sound; it is for low end....
A sub is the speaker but it does not put out any high end sound; it is for low end. For example, if something is exploding in the movie, you get more of the rumble effect with a sub. And then, for example, the center speaker is more directed at the dialog, so you get more effects on it; for example if someone drops a screwdriver or something like that, you get that sound from the smaller outer speaker. So when someone is speaking you get that from the center speaker.
Right now, your selection is between the 5.1 and 6.1 systems. We also have a 4.1, but that is pretty outdated. The 6.1 just has an added center dialog box. In some packages they will come with a sub. But the center dialog box is optional.
