MINERAL REINFORCED PLASTIC FRAME Vented reinforced plastic chassis. Proprietary cone material with natural fibres made in-house. Soft low damping rubber surround for improved transient response. Optimized motor system. Vented coil former for low compression. Non-resonant long life lead wires. Vented reinforced plastic chassis Proprietary cone material with natural fibers made in-house Soft low damping rubber surround for improved transient response Large spider for improved linearity Optimized motor system Vented coil former for low compression Non-resonant long life lead wires