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PD1850/2
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.
Diameter
18" / 457.2 mm
Coil Diameter
5.0" / 127 mm
Power Rating
800 w (A.E.S.)
Frequency Range
35 Hz - 2 kHz
Sensitivity
98 dB
Xmax
11.05 mm
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General Specifications
| Type | Sub Bass Driver |
| Available Impedance | 4 Ω/ 8 Ω/ 16 Ω |
| Nominal Diameter | 18" / 457.2 mm |
| Voice Coil Diameter | 5.0" / 127 mm |
| Peak Power (6 dB Crest Factor) * | 3200 w (A.E.S.) |
| Power Rating 1 2 * | 800 w (A.E.S.) |
| Sensitivity (1W/ 1m) * | 98 dB |
| Frequency Range | 35 Hz - 2 kHz |
| Resonance | 33.15 Hz |
| Voice Coil Winding Depth | 28 mm / 1.1" |
| Recommended Enclosure Volume | 90 - 220 Litres |
| Flux Density | 1.18 Tesla |
| Magnet Material | Ceramic |
| Magnet Gap Depth | 12 mm / 0.47" |
| Former Material | Glass Fibre |
| Dust Dome Material | Paper |
| Voice Coil Material | Copper |
| Cone Material | Paper |
| Suspension Material | Fabric |
| 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) | 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 |
| Width 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 | 23 Kg / 50.70 lb. |
| Shipping Weight | 26.3 Kg / 57.98 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 (35 to 350 Hz) Program 1600 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 800 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.
1. AES Standard (35 to 350 Hz) Program 1600 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 800 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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