※There is only one, and the attenuator is thin, so it is inexpensive. This is Altec's 904-8A network. The crossover is 1500 Hz. A rubber-like sheet is attached to the body (Murakoshi Yoichi)
Maintenance information: 2025.12.13 sound output confirmed
Accessories: none
Main specifications: W191 x H109 x D230 mm 1.9 kg