A 30cm woofer unit attached to the representative series from the 4311B to the 4312MK2. This unit is representative of JBL. It makes me feel the goodness of the overhang, which is typical of JBL. It can also come in handy as a spare. On the exterior, there are some stains on the cone on one side, and there are also dullness and scratches (Kobayashi Hitoshi)
Maintenance information:2023.3.7 operation confirmed
Accessories: none
Main specifications: 30 cm woofer unit maximum input: 75 W sound pressure level: 89 dB playback frequency band: 40 to 3 kHz Recommended cross: ~ 1.5 kHz impedance: 8 ohms diameter 310 x depth 107 mm 6 kg