Isophon Isonetta Speaker West Germany

Vintage Isophon Isonetta picnic speaker in used condition. The speaker is working, one wood foot is missing and the side knob is without function. The size is about 25 x 17 x 12 cm. The rear sticker is stamped with “ISOPHON Lautsprecher, Made in Western Germany, Anschluss für 4-6 Ohm, ISONETTA“.