Rare very nice sounding vintage Technics speakers with wood case. Power type and voltage No Power needed Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch Power out 24 W (max.) Material Wooden case Model: Hi-Fi Speaker SB-40 - Technics brand Shape Tablemodel, low profile (big size). Dimensions (WHD) 164 x 297 x 210 mm / 6.5 x 11.7 x 8.3 inch Notes SB-40- Type: Drone cone, full-range, speaker unit: 12 cm full-range, 12 cm drone cone, input impedance : 6 Ω, max input power: 24 W, sound pressure level: 89 dB/W (1 m) frequency response: 40 ~ 20000 Hz. Net weight (2.2 lb = 1 kg) 4.7 kg / 10 lb 5.6 oz (10.352 lb) Matching numbers! Some little signs of use Pictures are description Sounds marvelous! Carefully shipped and insured.