[dizzy]

Bill Graham wrote:

All you really need is one good bolted down woofer,

It need not be bolted-down, of course.

and all the other speakers can be small and relatively cheap, and you get a
fantastic sound system.

Sure. The amplifiers for the "main" speakers can be smaller as well.
Subwoofers can be the way to go, in many, if not most, situations.