I'm a little confused, what exactly are multimedia speakers? for example - What do you guys think about the Bose Companion 3 series 2 (239 USD on amazon)?
Lets just put it this way: In terms of power and precision of sound behringers I listed above will significantly surpass Chinese designed Swans, but these Swans will easily kill any Bose system up to 5 times the cost
Behringer B1030A - Are active monitors, means they have active crossover and woofer and twitter speakers are powered separately - makes it very efficient - read really loud and also easier to make it audio precise.
They are sold as each and fully independent from any other speakers.
The unspoken truth is Behringer is famous for designed their equipment by using heavy dose of "inspiration"

from world top Pro Audio manufactures.
Swans and AudioEngine (like
these) are powered speakers (or multimedia monitors)
They have passive crossover and a single stereo amplifier to power all four components and a single volume control to control both speakers.