Specifications
General Specifications
- Nominal diameter: 460mm/18in
- Power rating: 1600W rms
- Nominal impedance: 8Î
- Sensitivity: 297dB
- Frequency range: 25Hz-1500Hz
- Voice coil diameter: 125mm/5in
- Chassis type: Cast aluminium
- Magnet type: Ferrite
- Coil material: Round copper
- Former material: Glass fibre
- Cone material: Carbon and Kevlar loaded paper
- Surround material: Cloth sealed
- Suspension: Double
- Xmax3: 9mm/0.35in
- Gap depth: 12mm/0.47in
- Voice coil winding width: 30mm/1.18in
- D: 0.38m/14.96in
- Fs: 34.3Hz
- Mms: 259.72g/9.16oz
- Mmd: 238.11g/8.39oz
- Qms: 5.152
- Qes: 0.360
- Qts: 0.336
- Re: 5.98Î
- Vas: 150.58lt/5.32ft3
- BI: 30.52Tm
- Cms: 0.083mm/N
- Rms: 10.88kg/s
- Le (at 1kHz): 1.48mH
- Diameter: 462mm/18.19in
- Overall depth: 233mm/9.17in
- Cut-out diameter: 416mm/16.38in
- Mounting slot dimensions: 11mm x 7mm/0.43in x 0.28in
- Number of mounting slots: 8
- Mounting PCD range: 432-441mm/17.0-17.36in
- Unit weight: 50.6lb
Features
- 18" ferrite magnet, cast aluminium chassis LF driver delivering 1600Wrms (AES Standard) power handling and 97dB sensitivity
- 5" high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing sensitivity loss through thermal compression
- FEA optimized magnet assembly delivers highly symmetrical cone - movement, leading to exceptionally low harmonic distortion
- Vented front plate increases airflow to provide enhanced cooling
- Twin demodulation rings reduce flux modulation, minimizing electromagnetic distortion
- Double suspension and "multi-roll" surround provide exceptional linearity at extremes of cone excursion