Foster's edgeless woofer. Edges have been eliminated by adopting the SLE (Super Long Lenear Dispersion) method. The part that hits the edge has a ring-shaped slit that forms an acoustic low-pass filter, and has sufficient damping characteristics. Feeling of use on the whole drop, there is dirt on the corn paper (Daiki Goto)
Maintenance Information: 2022.11.14 Operation confirmed
Accessories: none
Main specifications: diameter 20cm weight 3.6 kg input 100W crossover frequency 3,000 Hz or less impedance 16Ω