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PD.18BR40

Bass Driver
  • Discontinued – Special Order / OEM Only
  • Contact info@precision-devices.com for order information
  • Heavy-duty cast aluminium chassis for increased rigidity
  • A smooth extended mid range to allow easy crossover integration
  • Suitable for bass reflex designs

Diameter

18" / 457.2 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

700 w (A.E.S.)

Frequency Range

35 Hz - 3 kHz

Sensitivity

97 dB

Xmax

10.5 mm
SKU: PD.18BR40.8 Category:

MRRP Ex. VAT

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General Specifications
TypeBass Driver
Nominal Diameter18" / 457.2 mm
Voice Coil Diameter4.0" / 101.6 mm
Power Rating 1 2 *700 w (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*97 dB
Frequency Range35 Hz - 3 kHz
Peak Power (6 dB Crest Factor)2800 w (A.E.S.)
Resonance30.03 Hz
Voice Coil Winding Depth25 mm / 0.98"
Recommended Enclosure Volume100 - 350 Litres
Flux Density1.34 Tesla
Magnet MaterialCeramic
Magnet Gap Depth9 mm / 0.35"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialFabric
Surround MaterialFabric
Thiele Small Parameters
Fs30.03 Hz
Re5.11 Ω
Qms10.21
Qes0.33
Qts0.32
Le (@ 1 kHz)1.03 mh
Vas308.99 litres
Mms164.2 g
Sd1134.11 cm2
Cms171 µm/N
BL22.03 T/m
Xmax10.5 mm
Vd1.19 litres
Ref. Efficiency2.24%
EBP91 Hz
Dimensions & Mounting
Overall Diameter474 mm
Width Across Flats458 mm
Flange Height13 mm
Depth (Excl. Flange)175 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter415 mm
Outer Bolt Circle6 * M8 on 456mm PCD
Inner Bolt CircleN/A
Shipping Information
Nett Weight14.2 Kg / 31.31 lb.
Shipping Weight15.6 Kg / 34.39 lb.
Notes
*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 driver may significantly exceed that of other manufacturers with high power ratings.

1. AES Standard (50 to 500 Hz) Program 700 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a700 Watt preconditioning period.

Please note that frequency response measurements are supplied for comparison purposes only and are not a measure of the low frequency performance which may be achievable in a fully optimised system.
Frequency Response & Impedance
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