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Sub Bass Driver
  • Engineered for minimal weight using traditional ferrite magnet motor
  • 5″ High temperature copper voice coil
  • 3 Kg Y35 ceramic magnet
  • Double suspension assembly
  • Triple roll surround straight cone geometry
  • Straight cone geometry
Klippel Verifeid


18" / 457.2 mm

Coil Diameter

5.0" / 127 mm

Power Rating

1200 W (A.E.S.)

Frequency Range

30 Hz - 300 Hz


97 dB


10.5 mm

The PD.185C001 is ideally suited to applications where high power handling, long excursion and perfect linearity is required. Completely versatile in bass reflex and horn loaded cabinets. TSP’s naturally suit all PD.186 applications but offer increased horsepower and punch.

Conceived around the famed PD.186. The PD.185C001 engineering has been focused around minimal weight using a traditional ferrite magnet motor system. Weighing in only 13Kg, it's lighter than some neodymium models available on the market today! The robust mechanical design and construction makes this unit an ideal choice for fixed or touring applications.

£220.00 MRRP Ex. VAT

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Frequency Response Graph
Impedance GRAPH
General Specifications
TypeSub Bass Driver
Nominal Diameter18" / 457.2 mm
Voice Coil Diameter5.0" / 127 mm
Power Rating 1 2 *1200 W (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*97 dB
Frequency Range30 Hz - 300 Hz
Peak Power (6 dB Crest Factor)4800 W (A.E.S.)
Resonance32 Hz
Voice Coil Winding Depth0.98" / 25.00 mm
Recommended Enclosure Volume125 - 200 Litres
Flux Density0.96 Tesla
Magnet MaterialCeramic
Magnet Gap Depth9.00 mm / 0.35"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialFabric
Surround MaterialFabric
Thiele Small Parameters
Fs32 Hz
Re5.9 Ω
Le (@ 1 kHz)3.800 mH
Vas302 Litres
Mms157.20 g
Sd1162 cm2
Cms157.40 µm/N
BL21.00 T/m
Xmax10.5 mm
Vd1.220 Litres
Ref. Efficiency2.26%
EBP75.65 Hz
Dimensions & Mounting
Overall Diameter474 mm
Width Across Flats459 mm
Flange Height14.5 mm
Depth (Excl. Flange)182.47 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter415 mm
Outer Bolt Circlex6 M8 on 456 mm PCD
Inner Bolt CircleN/A
Shipping Information
Nett Weight13.00 Kg / 28.66 lb
Shipping Weight13.50 Kg / 29.76 lb
* 2.83V. Half space response measured in a 950 litre sealed enclosure.

*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.

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

1. AES Standard (30 to 300 Hz) Program 900 Watts.

2. AES Recommended Practice.

3. Thiele - Small Parameters follow a 900 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.
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