Precision Devices PD.123ER
8Ω
Woofer
| Nominal diameter | 12″ / 300 mm |
| Resonance | 55.9 Hz |
| Q factor | 0.29 |
| Sensitivity | 98.1 dB |
| Linear excursion | ± 2.5 mm |
| Program Power | 800 W |
Discontinued
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 98.1dB
- Frequency response 50 - 5000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 55.9Hz
- Mechanical quality factor QMS 13.03
- Electrical quality factor QES 0.30
- Total quality factor QTS 0.29
Large signal parameters
- Maximum linear excursion xmax 2.5mm
- Air volume displaced at xmax VD 133cm³
- Power handling P 400W
- Program power Pmax 800W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.7Ω
- Inductance (1kHz) LE 0.25mH
- VC Diameter 76mm
- Winding height HVC 13mm
- Winding material Copper
- Former material Glass Fibre
Magnet
- Flux density B 1.35T
- Force factor Bl 21.7N/A
- Motor constant Bl/√RE 8.37N/√W
- Air gap height HAG 9mm
- Material Ceramic
Diaphragm
- Effective diameter 260mm
- Effective area SD 531cm²
- Moving mass MMS 58.9g
- Moving mass (without air load) MMD 49.8g
- Material Paper
Suspensions
- Stiffness KMS 7.25N/mm
- Compliance CMS 138µm/N
- Equivalent volume to the compliance VAS 54.5L
- Mechanical resistance RMS 1.59N·s/m
Dimensions
- Nominal diameter 12″
- 300mm
- Overall diameter 330mm
- Baffle cutout diameter 282mm
- Overall depth 127mm
- Flange thickness 10mm
- Mounting depth 117mm
- Volume occupied by the driver (estimated) 3.4L
- Net weight 9.5kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
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SpeakerSim
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