Jamo C803 Stereo and Surround Speakers (Pair, Black) (Discontinued by Manufacturer) A pair of top of the range stereo speakers Equipped with one 7" woofer and one 1" DTT (Decoupled Tweeter Technology) tweeter All front speakers in the C 80 series feature bi-wiring Uses Hard Conical Cone and Centre-Plug technology Frequency Range: 45-24,000Hz