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Speaker Specifications:

  • Nominal Basket Diameter: 12″ (305 mm)
  • Nominal Impedance: 8 Ω
  • Power Rating:
    • Program Power: 1000 W
    • Watts: 500 W
  • Resonance: 51 Hz
  • Usable Frequency Range: 44 Hz – 3 kHz
  • Sensitivity: 94.6 dB
  • Magnet Weight: 56 oz.
  • Gap Height: 0.37″ (9.5 mm)
  • Voice Coil Diameter: 2.5″ (64 mm)

Thiele & Small Parameters:

  • Resonant Frequency (fs): 51 Hz
  • DC Resistance (Re): 6.06 Ω
  • Coil Inductance (Le): 1.45m H
  • Mechanical Q (Qms): 7.28
  • Electromagnetic Q (Qes): 0.51
  • Total Q (Qts): 0.47
  • Compliance Equivalent Volume (Vas): 67.9 liters / 2.4 cu.ft.
  • Peak Diaphragm Displacement Volume (Vd): 243 cc
  • Mechanical Compliance of Suspension (Cms): 0.19 mm/N
  • BL Product (BL): 14.1 T-M
  • Diaphragm Mass Inc. Airload (MMs): 51 grams
  • Efficiency Bandwidth Product (EBP): 100
  • Maximum Linear Excursion (Xmax): 4.8 mm
  • Surface Area of Cone (Sd): 506.7 cm2
  • Maximum Mechanical Limit (Xlim): 13.5 mm

Mounting Information:

  • Recommended Enclosure Volume:
    • Sealed: 19.8-28 liters / 0.7-1 cu.ft.
    • Vented: 25.5-102 liters / 0.9-3.6 cu.ft.
  • Driver Volume Displaced: 0.079 cu.ft. / 2.25 liters
  • Overall Diameter: 12.03″ (305.6 mm)
  • Baffle Hole Diameter: 11.07″ (281.2 mm)
  • Front Sealing Gasket: Yes
  • Rear Sealing Gasket: Yes
  • Mounting Holes Diameter: 0.25″ (6.4mm)
  • Mounting Holes B.C.D.: 11.59″ (294.4mm)
  • Depth: 5.35″ (135.9 mm)
  • Net Weight: 11.8 lbs (5.35 kg)
  • Shipping Weight: 14 lbs (6.35 kgs)

Materials of Construction:

  • Coil Construction: Copper voice coil
  • Coil Former: Polyimide former
  • Magnet Composition: Ferrite magnet
  • Core Details: Vented and extended core
  • Basket Materials: Pressed steel basket
  • Cone Composition: Paper cone
  • Cone Edge Composition: Cloth cone edge
  • Dust Cap Composition: Solid composition paper dust cap

This speaker offers exceptional power handling and performance across a wide frequency range, making it suitable for various audio applications.

DELTA 12LF

$139.99Price
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