This is a JBL4520 original enclosure that was once active at the Osaka 70 Expo. Double backload floor type. Overwhelming and exciting! It is possible to reproduce deep bass with plenty of volume. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Accessories: MA15, self-made casters
Main specifications: Backload horn system/floor type enclosure unit mounting part (hole) diameter approx. 36 cm approx. 41.5 cm between diagonal bolts (actual measurement) dimensions W927 x H1,294 x D767 mm (actual size) reference weight approx. 110 kg