Due altoparlanti JM Jean Maurer in 1170 Aubonne tipo JM 325 D2 numero di serie 710524 & 710523 larghezza di banda 25-22000 Hz 100-200 Watt impedenza 3 Ohm. Circa 1989 H. 100,5x38x32,5 cm
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Jean Maurer Swiss Audio, la musique et l'humain (expérience, visite, interview) | Lautsprecher pläne, Lautsprecher, Energietechnik
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