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PD.188

Sub Bass Driver
  • Out of Manufacture – No longer Available
  • Heavy-duty cast aluminium chassis for increased rigidity
  • Double suspension system
  • A B/L in excess of 29 T/m
  • Effective transducer in a variety of versatile applications
  • Suitable for horn loaded or reflex designs

Diameter

18" / 457.2 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

600 w (A.E.S.)

Frequency Range

40 Hz - 3.5 kHz

Sensitivity

97.5 dB

Xmax

6 mm
SKU: PD.188.8 Category:

MRRP Ex. VAT

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General Specifications
TypeSub Bass Driver
Nominal Diameter18" / 457.2 mm
Voice Coil Diameter4.0" / 101.6 mm
Power Rating 1 2 *600 w (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*97.5 dB
Frequency Range40 Hz - 3.5 kHz
Peak Power (6 dB Crest Factor)2400 w (A.E.S.)
Resonance36.22 Hz
Voice Coil Winding Depth19 mm / 0.75"
Recommended Enclosure Volume100 - 350 Litres
Flux Density1.1 Tesla
Magnet MaterialCeramic
Magnet Gap Depth11 mm / 0.43"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialDual Fabric
Surround MaterialFabric
Thiele Small Parameters
Fs36.22 Hz
Re5.86 Ω
Qms13.04
Qes0.27
Qts0.26
Le (@ 1 kHz)1.55 mh
Vas201.69 litres
Mms173.02 g
Sd1134.11 cm2
Cms111.5 µm/N
BL29.28 T/m
Xmax6 mm
Vd0.68 litres
Ref. Efficiency3.92%
EBP134.14 Hz
Dimensions & Mounting
Overall Diameter474 mm
Width Across Flats458 mm
Flange Height13 mm
Depth (Excl. Flange)174 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter415 mm
Outer Bolt Circle6 * M8 on 456mm PCD
Inner Bolt CircleN/A
Shipping Information
Nett Weight14 Kg / 30.86 lb.
Shipping Weight15.25 Kg / 33.62 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 (40 to 400 Hz) Program 1200 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 600 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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