Tannoy Revolution R2 Speakers specifications Power handling: 90 watts continuous (RMS) Sensitivity: 88 dB Impedance: 6 ohms Magnetically shielded? No HxWxD (mm) / Weight: 920 x 170 x 235 / 13 Kg Frequency response: 44 - 20000 kHz Biwireable? Yes Connections: 4mm banana plug/binding post Bass port? Rear ported with optional tuning bung Drivers: HF: 25mm soft domed, LF: 2 x 130mm long throw paper cone Spikes included "Beautifully built [and with a] full and weighty sound" is how the reviewers at What Hi*Fi describe the R2s. With their sophisticated real cherry wood cabinets, the R2s not only sound fantastic, but look the part too. Their sleek cabinets appear in stark contrast to the outstanding bass and huge image which these gems produce - a real winner. All look as new. Matching numbers. Shipped carefully