A self-made box enclosure with a JBL tweeter and 25cm woofer attached. There are a lot of abrasions, but the board thickness is solid, and the sound-absorbing material is applied carefully and has a well-made finish. Please use an external network. There are abrasions throughout, and the color is slightly different on the left and right (Murakoshi Yoichi)
Accessories: saran net
Main specifications: opening diameter 226 mm, screw pitch 245 mm (woofer), 181 mm, wood screw fastener (tweeter) W395 x H645 x D382 16.1 kg (actual measurement)
A 20cm enclosure that seems to be a garage item. The 755E by ALTEC was mounted. It's carefully made (Itsuro Mizushima)
Accessories: none
Main specifications: Unit opening diameter 180mm Screw diagonal 195mm W300 × H510 × D235 mm
Backload enclosure for 20cm unknown from the manufacturer. It is made of plain wood plywood and is well made (Itsuro Mizushima)
Accessories: None
Main specifications: unit opening diameter 183mm W252 × H590 × D300mm 8.8kg