Voice coil 99.3 mm / 3.91" — 8Ω, winding 30 mm / 1.18", former 40 mm / 1.57", Fiberglass/

Class: 200 (Base enamel coating made of polyester or polyetherimide, outer coating made of polyamide-imide)

Temperature index: ≥200°C

Thermal shock: 220°C

Insulation thermoplasticity: 320°C

Class: 240 (Wire insulated with aromatic polyimide)

Temperature index: ≥240°C

Thermal shock: 260-300°C

Insulation thermoplasticity: 350-400°C

Temperature index (class) – the value at which the wire can operate at a constant temperature without losing its performance properties.

Thermal shock temperature – this parameter indicates the material's resistance to short-term exposure to high temperatures without insulation breakdown.

Insulation thermoplasticity temperature – the temperature at which the insulation begins to soften and lose its shape.

Round - standard winding in which the turns of the layer are located in the gaps between the turns of the previous layer. Due to the round shape of the wire, the filling factor is lower than that of a rectangular wire.

Rectangular - using a rectangular wire allows you to reduce the outer diameter of the coil, as well as reduce resistance in comparison with a round wire. The filling factor is the highest, but the coils are significantly more expensive than those made of round wire.