SEAS 'Prestige' H1142-08 (L18RNX/P) with an injection moulded metal chassis intended for bass reflex and transmission line designs.
Woofer with aluminium cone.
Coil wound around a toroidal sandwich core.
Air-core OFC foil coil.
Air Core Coil.
One-way digital plate amplifier.
Air-core hepta strand coil.