Bang & Olufsen, Red Line 45 type 1/6504 speakers, the same serial numbers; 318099 !! Design by David Lewis. Checked and tested, revised and cleaned, play well. These speakers are in good condition and play very beautifully, the high as well as the low tones come through well. They are revised, checked, tested and the plates in the speakers have been reupholstered. Years of manufacturing between 1984 and May 1987. Even the plastic bands are intact! Specifications; Type: 6504 type 1, capacity RMS; 45 W, music power; 60 W, Impedance 8 ohm, Van Internet; Frequency range +4 -8 dB 48 - 20,000 Hz, Power at 96 dB SPL 2.5 W, Sensitivity 1 W 92 dB, Distortion 250 - 1000 Hz < 1 %, Distortion > 1000 Hz < 1 %, Acoustic principle ABR, Auxiliary Bass Radiator, ABR unit 15 x 33 cm, Woofer: 16 cm, Tweeter: 2.5 cm, Crossover frequency: 2500 Hz Traces of use on two corners and a small dent (see pictures), not really bothersome. A 16 liter volume per speaker, the dimensions of the speaker is W x H x D: 54 x 40.5 x 16 cm, the weight of the speaker is 7.5 kg. The speakers will be packaged separately to prevent damaging. Shipping by registered mail with Track & Trace via PostNL. Can also be picked up in Roosendaal/Nispen.