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PD.123NR1
Bass / Mid Range Driver
- Out of Manufacture – No longer Available
- 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
- 3″ High temperature Copper voice coil
- Rear aluminium heat sink
|
Diameter
12" / 304.8 mm
Coil Diameter
3.0" / 76.2 mm
Power Rating
550 W (A.E.S.)
Frequency Range
45 Hz - 3.5 kHz
Sensitivity
99 dB
Xmax
7.5 mm
£253.35 MRRP Ex. VAT
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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 | 3.0" / 76.2 mm |
| Peak Power (6 dB Crest Factor) * | 2200 W (A.E.S.) |
| Power Rating 1 2 * | 550 W (A.E.S.) |
| Sensitivity (1W/ 1m) * | 99 dB |
| Frequency Range | 45 Hz - 3.5 kHz |
| Resonance | 43 Hz |
| Voice Coil Winding Depth | 0.77" / 19.50 mm |
| Recommended Enclosure Volume | 25 - 70 Litres |
| Flux Density | 1.25 Tesla |
| Magnet Material | Neodymium |
| Magnet Gap Depth | 10.00 mm / 0.39" |
| Former Material | Glass Fibre |
| Dust Dome Material | Solid Paper |
| Voice Coil Material | Copper |
| Cone Material | Paper |
| Suspension Material | Fabric |
| Surround Material | M Roll Poly Cotton |
Thiele Small Parameters
| Fs | 43 Hz |
| Re | 5.5 Ω |
| Qms | 6.5 |
| Qes | 0.207 |
| Qts | 0.2 |
| Le (@ 1 kHz) | 1.870 mH |
| Vas | 96 Litres |
| Mms | 56.00 g |
| Sd | 533 cm2 |
| Cms | 244.00 µm/N |
| BL | 20.50 T/m |
| Xmax | 7.5 mm |
| Vd | 0.370 Litres |
| Ref. Efficiency | 3.65% |
| EBP | 207.73 Hz |
Dimensions & Mounting
| Overall Diameter | 330.00 mm |
| Width Across Flats | 320 mm |
| Flange Height | 10.00 mm |
| Depth (Excl. Flange) | 141.00 mm |
| Magnet Diameter | 120 mm |
| Chassis Shoulder Diameter | 279.50 mm |
| Outer Bolt Circle | x4 M6 on 318 mm PCD |
| Inner Bolt Circle | N/A |
Shipping Information
| Nett Weight | 5.70 Kg / 12.57 lb |
| Shipping Weight | 6.30 Kg / 13.89 lb |
Notes
* Half space response measured in a 950 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 (45 to 450 Hz) Program 550 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 500 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 (45 to 450 Hz) Program 550 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 500 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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