I want the smallest speaker cabinet possible that is still adequate (in loudness and sound quality) as a guitar monitor. I'm talking small. A 1x10" cabinet is probably TOO BIG! Literally anything goes: arrays of tiny speakers, single compact drivers in weird-shaped cabinets, etc. Just so long as it's small and loud. Some other notes: wattage will be determined after the speaker cab is chosen. Also I want to carry this on a bicycle or in a backpack.