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PD.184C001
Sub Bass Driver
- Out of Manufacture – No longer Available
- Vented cast aluminium chassis for improved thermal control of voice coil
- Aluminium demodulation ring
- Flat wire 4″ high temperature copper voice coil
- Triple roll surround straight cone geometry
- For sub bass applications in bass reflex enclosures
Diameter
18" / 457.2 mm
Coil Diameter
4.0" / 101.6 mm
Power Rating
800 W (A.E.S.)
Frequency Range
35 Hz - 500 kHz
Sensitivity
98 dB
Xmax
9.7 mm
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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) * | 3200 W (A.E.S.) |
| Power Rating 1 2 * | 800 W (A.E.S.) |
| Sensitivity (1W/ 1m) * | 98 dB |
| Frequency Range | 35 Hz - 500 kHz |
| Resonance | 34 Hz |
| Voice Coil Winding Depth | 1.02" / 26.00 mm |
| Recommended Enclosure Volume | 90 - 200 Litres |
| Flux Density | 1.10 Tesla |
| Magnet Material | Ceramic |
| Magnet Gap Depth | 13.00 mm / 0.51" |
| Former Material | Glass Fibre |
| Dust Dome Material | Solid Paper |
| Voice Coil Material | Copper Flat Wire |
| Cone Material | Fibre loaded paper |
| Suspension Material | Poly Cotton |
| Surround Material | Poly cotton |
Thiele Small Parameters
| Fs | 34 Hz |
| Re | 5.2 Ω |
| Qms | 4.92 |
| Qes | 0.33 |
| Qts | 0.31 |
| Le (@ 1 kHz) | 2.240 mH |
| Vas | 305 Litres |
| Mms | 128.00 g |
| Sd | 1152 cm2 |
| Cms | 164.00 µm/N |
| BL | 21.00 T/m |
| Xmax | 9.7 mm |
| Vd | 1.120 Litres |
| Ref. Efficiency | 3.55% |
| EBP | 103.03 Hz |
Dimensions & Mounting
| Overall Diameter | 473.60 mm |
| Width Across Flats | 458.73 mm |
| Flange Height | 14.50 mm |
| Depth (Excl. Flange) | 176.00 mm |
| Magnet Diameter | 220 mm |
| Chassis Shoulder Diameter | 414.38 mm |
| Outer Bolt Circle | x6 M8 on 456 mm PCD |
| Inner Bolt Circle | N/A |
Shipping Information
| Nett Weight | 15.50 Kg / 34.17 lb |
| Shipping Weight | 16.00 Kg / 35.27 lb |
Notes
* 2.83V. Half space response measured in a 975 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 (35 to 350 Hz)
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 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)
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.
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