There were no problems with the sound output test, but since wrinkles on the center cap are conspicuous, it's cheap. It is a famous woofer that is also used in the Altec A7. The biggest appeal is that the low frequencies are lighter than 515 series woofers and have a sense of volume. You can experience clear bass with particularly penetrating power in jazz series, etc. (Sasaki Shota)
Maintenance Information: 2023.10.31 Sweep Test Good
Accessories: none
Main specifications: 38 cm woofer, Alnico magnet, playback frequency band, 20 to 1600 Hz, impedance 8 Ω, rated input, 30 W, allowable input, 50 W, recommended crossover, 800 Hz, outer dimensions, diameter 381 x H178 mm, weight 7.9 kg/1