I own both ProAc Response 1SCs and Tab 50 Sigs and find them to be very satisfying in my small room with or without a sub. It really depends on the music being played at the time, but I sometimes leave the sub off.
I'm using an old NHT SW3P passive subwoofer controlled by a Paradigm X30 crossover and driven by a Bryston 4B amp. Not the most sophisticated set up, but even though I haven't invested the time to properly set it up I'm still quite pleased with the combination in my small room. I really like the flexibility of being able to independently place the monitors for good imaging and adjusting the subwoofer separately for bass response.
But I must admit that I'm a bit curious about building the ProAc 2.5 DIY clone project outlined at:
http://www.geocities.com/diyproac25/
I'm using an old NHT SW3P passive subwoofer controlled by a Paradigm X30 crossover and driven by a Bryston 4B amp. Not the most sophisticated set up, but even though I haven't invested the time to properly set it up I'm still quite pleased with the combination in my small room. I really like the flexibility of being able to independently place the monitors for good imaging and adjusting the subwoofer separately for bass response.
But I must admit that I'm a bit curious about building the ProAc 2.5 DIY clone project outlined at:
http://www.geocities.com/diyproac25/