What's the size of your room? If it's not too large, I'd suggest adding about $100 - $150 to your budget and look at a small sealed sub, a couple I would check out are Rythmik's L12 or SVS SB1000 or a used SVS SB12-NSD.
I picked up a SVS SB12-NSD when they were selling out the last of their stock at $400 and have been using it in my computer room system in a small room with my Focal Electra 1008 BE speakers and Peachtree Nova 300. Sounds great to me.
I picked up a SVS SB12-NSD when they were selling out the last of their stock at $400 and have been using it in my computer room system in a small room with my Focal Electra 1008 BE speakers and Peachtree Nova 300. Sounds great to me.