Monster THX SL200-MTR BK Select Certified Monitor Speaker (Piano Black) (Discontinued by Manufacturer) Can also double as a center channel; perfect compliment to any combination of Monster THX Speakers used for fronts and rears THX Select certification delivers movie theater quality sound in the comfort of your own home Curvilinear enclosure cancels standing waves for clear imaging and a deeper, more precise soundstage 24k gold contact conductive spikes let you drive a Monitor and a Bass Module with a single set of cables 1" silk dome tweeter provides extremely detailed highs, transparent sound, and precise point-source imaging