Probably not exactly low end', I went with a pair of EV ZX-3 mains and ZX-1's for monitors. More 'mid level as things go I suppose. But mainly I wanted to at least end up with a reasonable amount of fidelity and head room for my little rig.
Anywhoo.. The little zx-1's are really nice vocal and mid instrument monitors (I HPF at about 100hz), very easy to set up with little to no feedback eq needed. Either box goes loud enough for what they're intended to do. The 12 inchers will want a sub of course if you're running kick and bass.
I'd like to hear their speakers, the only Carvin here is their one space 4-ch eq430, does most of the filtering.