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PD :: PD Loudspeaker Drivers :: PD 12 Inch :: PD PD.121
Precision Devices

Precision Devices PD.121 - 12" 300W 8 Ohm

SPL: 96.7dB Fs: 53Hz Xmax: 2.7mm
Product Code: PDIPD1218 Brand: Precision Devices Model: PD.121
Precision Devices PD.121 - 12 inch 300W 8 Ohm

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Precision Devices PD.121 - 12" 300W 8 Ohm

This general purpose bass/low mid range transducer is anything but standard and excels in a variety of systems being perfectly suited to either direct radiating or horn loaded mid/high applications. The PD.121 covers the critical vocal range in a single unit and is particularly effective at faithfully reproducing the pattern of powerful low end male vocals.


The PD.121 perfectly compliments PD's 15", 18", 21" and 24" transducers as part of a two- or three-way system.


Features:


  • Heavy duty 12" cast aluminium frame with extra wide flange for increased rigidity
  • 300WRMS
  • 2.5" copper voice coil assembly
  • 90 oz. ceramic magnet
  • A B/L in excess of 21T/m for dynamic voicing


Specifications:


  • Nominal Diameter 30cm (12")
  • Power rating 300 Watts
  • Frequency range 100Hz to 6 kHz
  • Nominal Impedance 8 or 16 Ohms
  • Sensitivity (1 W, 1 M) 99 dB
  • Resonance 53.27 Hz
  • Enc. Vol. Recommended 10 to 60 Litres
  • Displacement limit 10 mm (0.40')
  • Voice coil diameter 63 mm (2.52')
  • Voice coil Copper
  • Voice coil depth 12 mm (0.48')
  • Suspension (Spider) Fabric
  • Magnet gap depth 9 mm (0.36')
  • Magnet material/mass Ceramic/2.5 Kg (90 oz.)
  • Magnetic assembly total mass 7.8 Kg (17.24 Lbs.)
  • Flux Density 1.5 Tesla
  • Cone type/material Curvilinear Smooth Paper
  • Surround Fabric
  • Dust dome Paper
  • Connectors Spring loaded push button metal bodied
  • Polarity Positive Voltage on Red Terminal gives forward cone motion


Thiele-Small Parameters


  • Fs 53.27 Hz
  • Xmax 2.7 mm
  • Revc 5.93 Ohms
  • Vd 0.143 litres
  • Qts 0.23
  • No 5.1%
  • Qms 14.66
  • Pmx 300 Watts
  • Qes 0.23
  • Cms 168 micro m/N
  • Vas 66.58 Litres
  • Mms 65.37 grams
  • Sd 530.93 sq cm
  • BL 21.46 Tm


Mounting and Shipping Information:


  • Overall Diameter 330 mm
  • Width Across Flats 320.5 mm
  • Flange Height 10 mm
  • Depth (Excl. Flange) 115 mm
  • Magnet Diameter 200 mm
  • Chassis Shoulder Diameter 282 mm
  • Outer Bolt Circle 6 * M6 on 318mm PCD
  • Inner Bolt Circle 8 * M6 on 293mm PCD
  • Nett Weight 9.2 Kg / 20.28 lb.
  • Shipping Weight 10 Kg / 22.05 lb.
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