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PD.124NR1-LR
- 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 CCAW voice coil
- For two way ported applications and bass reinforcement in horn loaded designs
- Rear aluminium heat sink
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Diameter
Coil Diameter
Power Rating
Frequency Range
Sensitivity
Xmax
Intended as a high power bass / mid driver in traditional two way or multi way systems designs. The PD.124NR1's lower FS offers the ability for lower cabinet tuning and porting in reflex designs. The unit can also be used as a dedicated bass driver 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 motor temperature under control and reduces power compression to a minimum. The unit features a 4-inch, high temperature, CCAW voice coil capable of handling 1000W (AES).
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Frequency Response Graph
Impedance GRAPH
General Specifications
| Type | Bass / Mid Range Driver |
| Available Impedance | 4 Ω/ 8 Ω/ 16 Ω |
| Nominal Diameter | 12" / 304.8 mm |
| Voice Coil Diameter | 4.0" / 101.6 mm |
| Peak Power (6 dB Crest Factor) * | 4400 W (A.E.S.) |
| Power Rating 1 2 * | 1100 W (A.E.S.) |
| Sensitivity (1W/ 1m) * | 99 dB |
| Frequency Range | 45 Hz - 4 kHz |
| Resonance | 45 Hz |
| Voice Coil Winding Depth | 0.87" / 22.00 mm |
| Recommended Enclosure Volume | 30 - 70 Litres |
| Flux Density | 1.3 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 Clad Aluminium |
| Cone Material | Paper |
| Suspension Material | Poly Cotton / silicone damping |
| Surround Material | M Roll Poly Cotton |
Thiele Small Parameters
| Fs | 45 Hz |
| Re | 6.1 Ω |
| Qms | 7.3 |
| Qes | 0.233 |
| Qts | 0.225 |
| Le (@ 1 kHz) | 1.47 mH |
| Vas | 78 litres |
| Mms | 66 g |
| Sd | 540 cm2 |
| Cms | 189 µm/N |
| BL | 22 T/m |
| Xmax | 8.5 mm |
| Vd | 0.459 litres |
| Ref. Efficiency | 2.52 |
| EBP | 193.13 Hz |
Dimensions & Mounting
| Overall Diameter | 331.00 mm |
| Width Across Flats | 320 mm |
| Flange Height | 10.00 mm |
| Depth (Excl. Flange) | 146.00 mm |
| Magnet Diameter | 138 mm |
| Chassis Shoulder Diameter | 282.00 mm |
| Outer Bolt Circle | x4 M6 on 318 mm PCD |
| Inner Bolt Circle | N/A |
Shipping Information
| Nett Weight | 7.00 Kg / 15.43 lb |
| Shipping Weight | 7.50 Kg / 16.53 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 (55 to 550 Hz) Program 1000 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.
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