With original box This is 8,000 Hz frequency board for F-5/F-15/F-15L. Recommended for those who want to expand to 3way. There are no noticeable scratches (Shota Sasaki)
Maintenance information: Operation confirmed on 2021.11.22F-15
Accessories: original box
Main specifications: Compatible models F-5/F-15/F-15L Attenuation characteristics -12, -18dB/oct 8,000 Hz