Mid Range Driver
  • Radial neodymium motor structure
  • Vented cast aluminium chassis for improved thermal control of voice coil
  • Forced air cooling vented voice coil gap
  • Aluminium demodulation ring
  • 3″ High temperature CCAW voice coil
  • Rear aluminium heat sink
Klippel Verifeid
Radial Neo Technology
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Download PDF Datasheet

The PD.103NR1 is intended for use as a high power mid range driver in multiway systems. The optimised radial neodymium motor system allows more efficient management of the magnetic flux. Forced air venting and rear aluminium base plate keeps the motor temperature under control and reduces power compression to a minimum. The unit features a 3-inch, high temperature, CCAW voice coil capable of handling 700W (AES). The PD.103NR1 exhibits an average sensitivity of 100dB across its working band and will produce an SPL of 126 dB in a 15Ltr sealed enclosure.

Frequency Response GRaPH
Impedance GRAPH
General Specifications
Nominal Diameter10" / 254 mm
Voice Coil Diameter3.0" / 76.2 mm
Available Impedances4 Ω/ 8 Ω/ 16 Ω
Power Rating 1 2 *700 W (A.E.S.)
Peak Power (6dB Crest Factor)*2800 W (A.E.S.)
Sensitivity (1W – 1m)*100 dB
Frequency Range100 Hz - 5 kHz
Recommended Enclosure Volume15 - 25 Litres
Resonance65 Hz
Voice Coil Winding Depth0.59" / 15.00 mm
Magnet Gap Depth10.00 mm / 0.39"
Flux Density1.25 Tesla
Magnet MaterialNeodymium
Magnet Weight
Voice Coil MaterialCopper Clad Aluminium
Former MaterialGlass Fibre
Dust Dome MaterialSolid Paper
Suspension MaterialFabric
Cone MaterialPaper
Surround MaterialM Roll Poly Cotton
Thiele Small Parameters
Fs65 Hz
Re5.5 Ω
Le (@1 kHz)
Le (@10 kHz)1.200 mH
Vas36 Litres
Mms31.00 g
Sd362 cm2
Cms193.00 µm/N
BL18.00 T/m
Xmax7.5 mm
Vd0.180 Litres
Ref. Efficiency4.33%
EBP295.45 Hz
Dimensions & Mounting
Overall Diameter10" / 254 mm
Widths Across Flats272.24 / 269 mm
Flange Height7.00 mm
Depth (Excl. Flange)131.70 mm
Magnet Diameter120 mm
Chassis Shoulder Diameter228.00 mm
Outer Bolt Circlex4 M6 on 271 mm PCD
Inner Bolt CircleN/A


Shipping Information
Nett Weight5.25 Kg / 11.57 lb
Shipping Weight5.65 Kg / 12.46 lb


* 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 (70 to 700 Hz) Program 450 Watts.

2. AES Recommended Practice.

3. Thiele - Small Parameters follow a 400 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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