SD18X400 is a rcf kind speaker. Dual dampers, 4” inside and outside voice coil, thick washer and T-yoke, it is suitable to use for one way and two way speaker system.

Powered Sound Speaker Feature

 Stand 1000W RMS power

 Thick front late and back plate

 Dual silicone dampers

Pa Audio Speaker General Specifications

Nominal Diameter: 465 mm/ 18 inch
Rated Impedance:8 OHM

Sensitivity: 95 dB
Frequency Range: 35 Hz - 1500 Hz

Peak Power: 1000 W

RMS Power::200 W
Voice Coil Diameter: 100mm/ 4 inch
Voice Coil Material: Copper
Number of layers: Inside/ Outside
Cone Material: No pressed pulp
Surround Material: Polycotton
Surround Design: Triple– roll

Basket Materials: Aluminum

Magnet Materials: 123 oz Ceramic

1000Watt Speaker T/S Parameters

Resonance Frequency:  35HZ

Qes: 0.370

Qms: 6.536

Qts: 0.350

Sd: 133.317 cm²

Mms: 230.809g

BL Strength Factor: 25.103T.M.

Mounting Information:

Overall Diameter: 465mm/18inch

Baffle Cutout Diameter: 445mm/17.52inch

Bolt Circle Diameter: 4255mm/16.73 inch
Overall Depth: 48mm/ 1.89inch