Power	Diameter	Impedence
1000 watts	18" - 45.72 cms	4, 8 or 16 ohms

	Heavy duty 18” cast aluminium frame with extra wide flange for increased rigidity

	Sub Woofer

	1000WRMS

	5” copper voice coil assembly

	170 oz. ceramic magnet

	Power compression only 1.7dB at rated power *1

	Distortion *2 2nd Harmonic < I % 3rd Harmonic < I %

	Advanced magnetic assembly incorporating a composite alloy and steel pole piece giving a uniform and stable magnetic field, improving linear excursion and providing an efficient thermal path to dissipate the heat produced by the voice coil

	A B/L of 31 T/m for fast accurate lows

	Double suspension system maintaining a pure piston action for the moving mass even when driven with the most complex programme input signals and provides additional durability against the rigours of life on the road

	*1 Power compression is the reduction of sensitivity at the specified power. Higher power ratings do not necessarily give a proportionate increase in SPL, therefore the maximum SPL of the PD.1850 may significantly exceed that of other manufacturers with high published power ratings.

	*2 Distortion is measured at 10% of the rated power (AES Standard)

Description:

Designed specifically to provide powerful and accurate bass frequencies with minimal distortion and power compression. The PD.1851 is the optimum choice for top of the range sub bass systems where the ability to take punishment in the most demanding applications is the ultimate selection criterion. Suitable for sound reinforcement in a variety of enclosure types since it allows enclosure designers considerably more freedom with specialised loading techniques without having to make allowances for physical characteristics or power handling limitations which are typically the result of more traditional designs. Appropriate for applications as diverse as scoop bins, conventional reflex cabinets and horn loaded systems.

	Download NEW PD.1851 Datasheet

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NEW PD.1851 Technical Information

Nominal Diameter	46 cm (18”)
Voice Coil Diameter	127 mm (5”)
Nominal impedance	4,8 or 16 Ohms
Power Rating	1000 Watts (AES)
Sensitivity (1W/1M)	98 dB
Frequency Range	35 Hz - 2 kHz
Recommended Enclosure Volume	90-220 Litres
Displacement Limit (peak-peak)	34 mm (1.33”)
Resonance	34 Hz
Voice Coil	Copper
Voice Coil	Winding Depth 29 mm (1.14”)
Magnet Gap Depth	12 mm (0.453”)
Magnet Material	Ceramic
Flux Density	1.18 T
Dust Dome Material	paper
Suspension Material	Accrylic
Cone / Surround Material	Paper/HGBC
Thiele-Small Parameters
Fs	34 Hz
Re	5.4 Ohms
Qts	0.29
Qms	15.81
Qes	0.3
Vas	182 Litres
Mms	231.4 g
Sd	11506 cm2
Cms	96 &
BL	31 T/m
Xmax	12 mm
Vd	1.31 Litres
Reference Efficiency 0.0288