Dynacord 337711 HF-Driver compatible diaphragms: ---------------------------------------------------------------------- inner diameter coil: 25.5mm diaphragm print length: 70mm membrane material: resin glass fiber impedance: 8 Ohm ---------------------------------------------------------------------- 025H27 025H30 H025N08 H025N27 H025N30 PH-404 PH-405 PH-406 PH-408 PH-410 PH-411 PH-412 PH-413 HT-404 HT-405 HT-406 HT-408 HT-410 HT-411 HT-412 HT-413 PHT-404 PHT-405 PHT-406 PHT-408 PHT-410 PHT-411 PHT-412 PHT-413 ----------------------------------------------------------------------