Woofer AA-21NDL451

* MODEL NO.: 21NDL451
* Nominal Diameter @ inch 21
* Rated Impedance @ ohm 8
* Power Handling Capacity @ watt 1500
* Program Power @ watt 3000
* Sensitivity(1W/1m) @ dB 98
* Frequency Range @ Hz 30-1500
* Minimum Impedance @ ohm 5.1
* Voice Coil Diameter @ inch 4.5
* Voice Coil Material copper
* Voice Coil Former Material TIL
* Voice Coil Winding Depth @ mm 30
* Number of Layers 2
* Kind of Layer inside/outside
* Gap Height @ mm 14
* Magnet Material NEO inside slug
* Magnet Size @ mm 105*10
* Basket Material Die-cast Alu.
* Cone Material No pressed pulp
* Cone Design Straight
* Surround Material Polycotton
* Surround Design Triple roll