PowerProX18

18-inch, cast aluminium chassis, ferrite magnet LF loudspeaker

PowerProX speakers are built for maximum performance and reliability throughout the lifespan of each speaker
Dynamic airflow venting delivers class-leading heat management with an average 20C lower voice coil temperature
Polysiloxane laminated dual suspension provides greater stability and improved cone displacement symmetry
Aluminium demodulation ring reduces harmonic and intermodulation distortion caused by voice coil displacement
Double-sided, weatherproof cone coating for moisture protection and enhanced durability

Specifications

2400W

Continuous power rating

97dB

Sensitivity

4in

Voice coil diameter

Nominal diameter

457mm / 18in

Power rating

1200W

Continuous power rating

2400W

Rated impedance

8Ω

Sensitivity

97dB

Frequency range

35-1000Hz

Chassis type

Cast aluminium

Magnet type

Ferrite

Magnet weight

3.5kg / 124oz

Voice coil diameter

100mm / 4in

Voice coil material

Round copper

Former material

Glass fibre

Cone material

Glass loaded cellulose, water-resistant coating front & back

Surround material

Cloth-sealed

Suspension

Dual-laminated

Gap height (H_g)

11.75mm / 0.46in

VC winding height (H_vc)

25mm / 0.98in

Parameters

1210.0cm² / 187.6in²

34.8Hz

Mms

229.98g / 8.1oz

Qms

3.147

Qes

0.431

Qts

0.379

5.1Ω

Vas

188.9l / 6.67ft³

24.38Tm

Cms

0.091mm/N

Rms

15.96kg/s

Le (at 1kHz)

1.61mH

Xmax

9.5mm / 0.37in

Xmech

48mm / 1.9in

Efficiency η₀

1.8%

Mounting Information

Overall diameter

460mm / 18.1in

Overall depth

225mm / 8.9in

Cut-out diameter

414mm / 16.29in

Mounting hole dimensions

11x7mm / 0.43x0.28in

Number of mounting holes

Mounting hole PCD

441-432mm / 17.36-17.31in

Flange & gasket thickness

16.2mm / 0.64in

Unit weight

13.2kg / 29.1lb

Frequency response and impedance

Force factor (Bl) symmetry

Stiffness (K) symmetry

Power rating: Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.

Continuous power rating: Defined as 3dB greater than the AES rating.

Sensitivity: Measured on axis at 1W, 1m in 2π anechoic environment.

Parameters: Measured after unit subjected to pre-conditioning signal.

Xmax: 0.5*(H_vc-H_g) + 0.25*H_g

Xmech: Maximum peak-to-peak excursion before damage.

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