Dual neodymium magnets, alu cone, very wide frequency range, copper cap on center pole, extensive venting, low distortion, 4 ohm.

Dual neodymium magnets, alu cone, very wide frequency range, copper cap on center pole, extensive venting, low distortion, 8 ohm.

Alu cone, very wide frequency range, copper cap on center pole, extensive venting, low distortion, 4 ohm.

Alu cone, very wide frequency range, copper cap on center pole, extensive venting, low distortion, 8 ohm.