Sigma Pro 18
For all high power bass applications. The Sigma Pro 18 has a 3" polyamide-imide coated two-layer 28 ga. copper voice coil, kapton coil former, 120 oz.* ferrite magnet, vented and extended core, paper cone with cloth edge, and a paper dust cap. Available in 8 ohms.
Features
Kapton coil former for increased rigidity and thermal protection
Polyamide-imide coated two-layer, 28ga., copper voice coil for improved power-handling and durability
Ferrite Magnet (*recently improved with a 120 oz. magnet)
Vented and extended core for increased power- handling
Die-cast aluminum basket for rigidity
Paper cone
Cloth cone edge
Solid composition paper dust cap
Specifications
Nominal Basket Diameter: 18", 457.2mm
Impedance: 8 ohms
Power Rating: 650Wrms
Resonance: 28Hz
Usable Frequency Range: 25Hz - 2.5kHz
Sensitivity: 101.0
Magnet Weight: 120oz.*
Voice Coil Diameter: 3.0", 76.2mm
