PD.1850/3
Sub Bass Driver
- Heavy-duty cast aluminium chassis for increased rigidity
- Power compression only 1.6dB at rated power
- A B/L in excess of 30 T/m
- Double suspension
- Appropriate for applications as diverse as scoop bins, conventional reflex cabinets and horn loaded systems
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Designed specifically to provide powerful and accurate bass frequencies with minimal distortion and power compression. The PD.1850/2 is the optimum choice for top of the range sub bass systems. Suitable for sound reinforcement in a variety of enclosure types such as scoop bins, conventional reflex cabinets and horn loaded systems.
General Specifications
| Nominal Diameter | 18" / 457.2 mm |
| Voice Coil Diameter | 5.0" / 127 mm |
| Available Impedances | 4 Ω/ 8 Ω/ 16 Ω |
| Power Rating 1 2 * | 800 w (A.E.S.) |
| Peak Power (6dB Crest Factor)* | 3200 w (A.E.S.) |
| Sensitivity (1W – 1m)* | 98 dB |
| Frequency Range | 35 Hz - 2 kHz |
| Recommended Enclosure Volume | 90 - 220 Litres |
| Resonance | 33.15 Hz |
| Voice Coil Winding Depth | 28 mm / 1.1" |
| Magnet Gap Depth | 12 mm / 0.47" |
| Flux Density | 1.18 Tesla |
| Magnet Material | Ceramic |
| Magnet Weight | |
| Voice Coil Material | Copper |
| Former Material | Glass Fibre |
| Dust Dome Material | Paper |
| Suspension Material | Fabric |
| Cone Material | Paper |
| Surround Material | Fabric |
Thiele Small Parameters
| Fs | 33.15 Hz |
| Re | 5.22 Ω |
| Qms | 15.42 |
| Qes | 0.24 |
| Qts | 0.24 |
| Le (@1 kHz) | |
| Le (@10 kHz) | 1.33 mh |
| Vas | 203.84 litres |
| Mms | 215.24 g |
| Sd | 1164.16 cm2 |
| Cms | 107 µm/N |
| BL | 30.99 T/m |
| Xmax | 11.05 mm |
| Vd | 1.28 litres |
| Ref. Efficiency | 2.88% |
| EBP | 138.12 Hz |
Dimensions & Mounting
| Overall Diameter | 474 mm |
| Widths Across Flats | 459 mm |
| Flange Height | 14.5 mm |
| Depth (Excl. Flange) | 175 mm |
| Magnet Diameter | 280 mm |
| Chassis Shoulder Diameter | 414.5 mm |
| Outer Bolt Circle | 6 * M8 on 455mm PCD |
| Inner Bolt Circle | N/A |
Shipping Information
| Nett Weight | |
| Shipping Weight |
Notes
* 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 1600 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 800 Watt preconditioning period verified by Klippel LSI measurement.
4. 2.83V. Half space response measured in a 975 Litre sealed enclosure.
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.
** Distortion is measured at 10% of the rated power (AES Standard).
1. AES Standard (35 to 350 Hz). Program 1600 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 800 Watt preconditioning period verified by Klippel LSI measurement.
4. 2.83V. Half space response measured in a 975 Litre sealed enclosure.
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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