Goodmans the Havant (not sl-model), 1971, made in England UK

Link: hifi-wiki

Nom. Power Input: 20W
Maximum Input: 15W
Impedance: 4 Ohms Sens. 4-4W
Dimensions (WHD): 265 x 480 x 235 mm (размеры отличатся от SL)
Tweeter: Philips AD0100