Higher efficiency than the PRoac D28 without trading off low-end extension will inevitably call for a bigger box... that's just the way the laws of physics shake out (enthusiastic marketing departments notwithstanding). Often a floorstander takes up no more real estate than a stand-mount while offering better bass at a comparable cost once stands are factored in; in fact the D28 is a good example of exactly that!
Duke
dealer/manufacturer
Duke
dealer/manufacturer