Look in to some small active studio monitors. I've had a pair of KRK Rockit 5's as computer speakers for nearly 10 years. I want to say the built in amps (each is bi amped) push about 100 watts and they extend well below 100hz. I don't feel the need for a sub.
HT: B&W CM9 S2 - Martin Logan SLM-XL - DefTech XTR-20BP - Dual SVS SB-2000 - Parasound Halo A21 and A51 - Marantz AV7702 MKii - Samsung UN65JS8500
2CH: Sonus Faber Cremona Auditor M - Parasound Halo A23 - Bluesound Node 2 - Iomega NAS
WAF is currently at DEFCON RED