Spec:

Voice coil: 1" (25mm) 

Diameter: 1.75" (45mm) 

Length: 2.875" (72mm) 

Impedance: 8 ohm, 

Fits Foster & Fostex N30, 025H30, H025N30, H025N27, H025N28, FT300H drivers and many others 

See the "Fits Models" tab for all applicable cabinet and driver numbers.

025H30, 025H27, 0013252, DC10/1501-16, H025N30, H025N27, H025N08, FT300H, N08, PHT-404, PHT-405, PHT-406, PHT-408, PHT-410, PHT-411, PHT-412, PHT-413, PHT404, PHT405, PHT406, PHT408, PHT410, PHT411, PHT412, PHT413, PH-404, PH-405, PH-406, PH-408, PH-410, PH-411, PH-412, PH-413, PH404, PH405, PH406, PH408, PH410, PH411, PH412, PH413, HT-404, HT-405, HT-406, HT-408

Inside diameter of voice coil :25.5mm (1inch).

Frame long :70mm (2-3/8 inch)

Impedance:8 ohm