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PD.188
Sub Bass Driver
- Out of Manufacture – No longer Available
- Heavy-duty cast aluminium chassis for increased rigidity
- Double suspension system
- A B/L in excess of 29 T/m
- Effective transducer in a variety of versatile applications
- Suitable for horn loaded or reflex designs
Diameter
18" / 457.2 mm
Coil Diameter
4.0" / 101.6 mm
Power Rating
600 w (A.E.S.)
Frequency Range
40 Hz - 3.5 kHz
Sensitivity
97.5 dB
Xmax
6 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 | 4.0" / 101.6 mm |
| Peak Power (6 dB Crest Factor) * | 2400 w (A.E.S.) |
| Power Rating 1 2 * | 600 w (A.E.S.) |
| Sensitivity (1W/ 1m) * | 97.5 dB |
| Frequency Range | 40 Hz - 3.5 kHz |
| Resonance | 36.22 Hz |
| Voice Coil Winding Depth | 19 mm / 0.75" |
| Recommended Enclosure Volume | 100 - 350 Litres |
| Flux Density | 1.1 Tesla |
| Magnet Material | Ceramic |
| Magnet Gap Depth | 11 mm / 0.43" |
| Former Material | Glass Fibre |
| Dust Dome Material | Paper |
| Voice Coil Material | Copper |
| Cone Material | Paper |
| Suspension Material | Dual Fabric |
| Surround Material | Fabric |
Thiele Small Parameters
| Fs | 36.22 Hz |
| Re | 5.86 Ω |
| Qms | 13.04 |
| Qes | 0.27 |
| Qts | 0.26 |
| Le (@ 1 kHz) | 1.55 mh |
| Vas | 201.69 litres |
| Mms | 173.02 g |
| Sd | 1134.11 cm2 |
| Cms | 111.5 µm/N |
| BL | 29.28 T/m |
| Xmax | 6 mm |
| Vd | 0.68 litres |
| Ref. Efficiency | 3.92% |
| EBP | 134.14 Hz |
Dimensions & Mounting
| Overall Diameter | 474 mm |
| Width Across Flats | 458 mm |
| Flange Height | 13 mm |
| Depth (Excl. Flange) | 174 mm |
| Magnet Diameter | 220 mm |
| Chassis Shoulder Diameter | 415 mm |
| Outer Bolt Circle | 6 * M8 on 456mm PCD |
| Inner Bolt Circle | N/A |
Shipping Information
| Nett Weight | 14 Kg / 30.86 lb. |
| Shipping Weight | 15.25 Kg / 33.62 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 (40 to 400 Hz) Program 1200 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 600 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 (40 to 400 Hz) Program 1200 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 600 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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