Architech Se691E 5.25-Inch Premium Series In-Wall Speakers 60w Max, 30w Nominal 5.25" Carbon Fiber Woofer With Butyl Surround Pivoting, Soft Dome Tweeter 7 X 50Mm 5.25" Carbon Fiber Woofer With Butyl Surround Pivoting Soft Dome Tweeter Imp: 8? Freq Resp: 60 Hz21 Khz