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PD.184NR1
- 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
- Dual spider configuration with silicone based damping control
- 4″ High temperature Copper voice coil
- Triple-roll surround straight cone geometry
- For sub bass applications in bass reflex / horn loaded enclosures
- Rear aluminum heat sink
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Diameter
Coil Diameter
Power Rating
Frequency Range
Sensitivity
Xmax
The PD.184NR1 is ideally suited to applications where high power handling, long excursion and perfect linearity is required.
The robust mechanical design and construction makes this unit an ideal choice for fixed or touring applications. The PD.184NR1 is intended as a dedicated sub woofer in bass reflex and Horn loaded designs. The optimised radial neodymium motor system allows more efficient management of the magnetic flux, forced air venting and rear aluminium base plate keeps the motors temperature under control and reduced power compression to a minimum.
The PD.184NR1 features a 4-inch, high temperature, copper voice coil capable of handling 1000W (AES) exhibiting an average sensitivity of 97.5dB across its working band.
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Frequency Response Graph
Impedance GRAPH
General Specifications
| Type | Sub Bass Driver |
| Available Impedance | 4 Ω/ 8 Ω/ 16 Ω |
| Nominal Diameter | 18" / 457.2 mm |
| Voice Coil Diameter | 4.0" / 101.6 mm |
| Peak Power (6 dB Crest Factor) * | 4000 W (A.E.S.) |
| Power Rating 1 2 * | 1000 W (A.E.S.) |
| Sensitivity (1W/ 1m) * | 99 dB |
| Frequency Range | 30 Hz - 800 Hz |
| Resonance | 38 Hz |
| Voice Coil Winding Depth | 0.87" / 22.00 mm |
| Recommended Enclosure Volume | 90 - 200 Litres |
| Flux Density | 1.18 Tesla |
| Magnet Material | Neodymium |
| Magnet Gap Depth | 11.00 mm / 0.43" |
| Former Material | Glass Fibre |
| Dust Dome Material | Solid Paper |
| Voice Coil Material | Copper |
| Cone Material | Paper |
| Suspension Material | Poly Cotton / silicone damping |
| Surround Material | M Roll Poly Cotton |
Thiele Small Parameters
| Fs | 38 Hz |
| Re | 5.4 Ω |
| Qms | 6.17 |
| Qes | 0.29 |
| Qts | 0.27 |
| Le (@ 1 kHz) | 1.890 mH |
| Vas | 102 Litres |
| Mms | 216.00 g |
| Sd | 1164 cm2 |
| Cms | 99.70 µm/N |
| BL | 29.50 T/m |
| Xmax | 8.5 mm |
| Vd | 0.800 Litres |
| Ref. Efficiency | 2.50% |
| EBP | 131.03 Hz |
Dimensions & Mounting
| Overall Diameter | 474 mm |
| Width Across Flats | 459 mm |
| Flange Height | 14.5 mm |
| Depth (Excl. Flange) | 200 mm |
| Magnet Diameter | 138 mm |
| Chassis Shoulder Diameter | 415 mm |
| Outer Bolt Circle | x6 M8 on 456 mm PCD |
| Inner Bolt Circle | N/A |
Shipping Information
| Nett Weight | 9.60 Kg / 21.16 lb |
| Shipping Weight | 10.30 Kg / 22.71 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.
** Distortion is measured at 10% of the rated power (AES Standard).
1. AES Standard (35 to 350 Hz) Program 1000 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 1000 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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