Power	Diameter	Impedence
600 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

	Field replaceable magnet for touring applications

	600WRMS

	4” copper voice coil assembly

	Neodymium magnet assembly

	A B/L in excess of 25 T/m for fast acurate lows

	Net Weight: 8.5kg

Description:

Designed to provide superlative performance when used in either horn-loaded or reflex enclosures where fast accurate lows are demanded. Neodymium technology ensures superb versatility in situations in which a conventional ceramic magnet transducer is unsuitable on grounds of portability or ease of installation. An exemplary choice for upgrade or replacement situations where the capability of the PDN.18SB40 to “drop in” and provide outstanding bass response makes this a versatile and highly effective unit. Well suited to use with PDN.10MH25/PDN.12MH25 and PD compression driver in direct radiating/horn loaded systems where the double suspension system allows it to thrive in the demanding touring sector.

	Download PDN.18SB40 Neodymium Datasheet

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PDN.18SB40 Neodymium Technical Information

Nominal diameter	46cm (18”)
Voice coil diameter	101mm (4”)
Nominal impedance	4, 8 or 16 Ohms
Power rating (AES) 1	600 Watts
Sensitivity 2 (1W/1M)	98 dB/1W/1m
Frequency range	40-3.5 KHz
Enc Vol recommended	100-350 Litres
Displacement limit (peak-peak)	34 mm
Nett weight	8.5 Kg
Resonance	40 Hz
Voice coil	copper
Voice coil winding	depth 19 mm
Magnet gap depth	11 mm
Flux Density	1.2 T
Dust dome	Paper
Suspension	Double fabric
Cone/Surround	Paper/cloth
Thiele-Small Parameters
Fs	38.527 Hz
L1	1.056 mH
L2	2.440 mH
Res	188.493 Ohms
RMSE-load	3.163 Ohms
Qts	0.325
RMSE-free	2.717 Ohms
Qms	10.520
Vas	201.323 Litres
Qes	0.336
Mms	153.124 grams
Sd	1134.11 sq cm
Cms	111.445 µM/N
R2	9.939 Ohms
BL	25.772T/m
Xmax	6.0 mm
Re	6.015 Ohms