Newegg has the Polk Audio CS2 Black Center Channel Loudspeaker for $150 with free shipping. Use coupon code EMCMLMT35 to knock it down to $110.
Features:
- Non-resonant all-MDF enclosure construction with 0.75"-thick baffles ensures cleaner, clearer, more lifelike sound quality.
- Reversible-design cabinets can be turned upside down to aim "up" when placed under a video monitor.
- Magnetic shielding for safe placement near TVs with no risk of video distortion.
- Crossover: 2.3kHz, second order high and low pass
- Enclosure Type: Vented via rear-mounted flared port
Newegg.com - Polk Audio CS2 Black Center Channel Loudspeaker Single
Polk Audio CS2 Black Center Channel Loudspeaker Single $110 + FS 
