PD.123C001
Bass / Mid Range Driver
- Vented cast aluminium chassis for improved thermal control of voice coil
- Optimised vented voice coil cools and reduces coil gap turbulence
- Multi roll cone surround profile
- High BL of 24.5 T/m

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The PD.123C001 offers excellent linear response well controlled down to 50Hz. It is a very good solution for two way or multi way systems where high BL and good punch is required.
General Specifications
Nominal Diameter | 12" / 304.8 mm |
Voice Coil Diameter | 3.0" / 76.2 mm |
Available Impedances | 4 Ω/ 8 Ω/ 16 Ω |
Power Rating 1 2 * | 600 W (A.E.S.) |
Peak Power (6dB Crest Factor)* | 2400 W (A.E.S.) |
Sensitivity (1W – 1m)* | 99 dB |
Frequency Range | 45 Hz - 4 kHz |
Recommended Enclosure Volume | 35 - 55 Litres |
Resonance | 35 Hz |
Voice Coil Winding Depth | 0.83" / 21.00 mm |
Magnet Gap Depth | 11.00 mm / 0.43" |
Flux Density | 1.20 Tesla |
Magnet Material | Y30 Ferrite |
Magnet Weight | |
Voice Coil Material | Copper |
Former Material | Glass Fibre |
Dust Dome Material | Paper |
Suspension Material | Fabric |
Cone Material | Paper |
Surround Material | Fabric |
Thiele Small Parameters
Fs | 35 Hz |
Re | 5.5 Ω |
Qms | 7.5 |
Qes | 0.147 |
Qts | 0.144 |
Le (@1 kHz) | |
Le (@10 kHz) | 2.170 mH |
Vas | 122 Litres |
Mms | 70.00 g |
Sd | 547 cm2 |
Cms | 288.00 µm/N |
BL | 24.50 T/m |
Xmax | 7.5 mm |
Vd | 0.410 Litres |
Ref. Efficiency | 3.44% |
EBP | 238.10 Hz |
Dimensions & Mounting
Overall Diameter | 12" / 304.8 mm |
Widths Across Flats | 320 mm |
Flange Height | 10.00 mm |
Depth (Excl. Flange) | 121.00 mm |
Magnet Diameter | 200 mm |
Chassis Shoulder Diameter | 279.00 mm |
Outer Bolt Circle | x4 M6 318 mm PCD |
Inner Bolt Circle | (Hidden) x8 M6 on 293 mm PCD |
Shipping Information
Nett Weight | |
Shipping Weight |
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 (50 to 500 Hz) Program 400 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 400 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 (50 to 500 Hz) Program 400 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 400 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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