Big Speaker Sound Without The Big Speaker Whether you're looking for your first home theater sub/sat system or want to upgrade to more performance, you're in for a big surprise in a small, compact package from Polk Audio. The predecessor to Blackstone TL, our RM series, was always about "Big Speaker Sound Without The Big Speaker." Blackstone TL represents a significant leap forward, delivering an astonishing home theater performance never before heard in compact loudspeakers.
.75" Silk-dome Tweeters
3.25" Composite Injection-molded Cones With Dynamic Balance Driver Technology
5-way Binding Posts
Time Lens Technology
Time Lens Technology-The acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging
PowerPort a patented Polk technology, extends the low frequency mid-bass driver response as it decreases air turbulence, eliminates "port noise" and bass output losses up to 3 dB.
3/4" Silk Dome Tweeters for crisp, clear imaging and smooth response that's never tiring.
3 1/4" Composite Injection Molded Cones With Dynamic Balance Driver Technology
Combination Keyhole Slot & 1/4" x 20 Threaded Insert fits all aftermarket ceiling and wall brackets for ultimate flexibility.