Descriptions

About: BlastKing Profile18 18″ 1500W RMS High Output Woofer - 8 Ohms (Each)

The BlastKing Profile series brings high output, low frequency woofers in 12”, 15”, 18” and 21” options. These transducers are capable of very low frequencies and are intended for use in a reflex or horn loaded cabinets. They are all made in a high-quality die cast aluminum frame and boast a heavy-duty ferrite magnet that allows for increased power ratings. The Profile transducers are perfect for those needing high level, low frequency output transducers with very low distortion.

Specifications:

• Nominal Basket Diameter: 18" (457 mm)
• Rated Impedance: 8 ohm
• Rated Power Handling: 1500 Watts
• Program Power: 3000 Watts
• Sensitivity: 97.4 dB
• Frequency Range: 38Hz - 1500Hz
• Magnet Weight: 150 Oz
• Magnet Dimensions: 9.8" x 5.5" x 1" (250 x 140 x 25 mm) 
• Minimum Impedance 5.3 ohm
• Voice Coil Diameter: 4.5" (115 mm) 
• Voice Coil Material: Fiberglass
• Voice Coil Length: 1" (25 mm)
• Number of Layers: 2
• Kind of Layers: Inside/Outside
• Top Plate Thickness:0.59" (15 mm)

Thiele & Small Parameters:

• Resonance Frequency (Fs): 38Hz
• DC Resistence (Re): 5.3 ohm
• Mechanical Factor (Qms): 2.6
• Electrical Factor (Qes): 0.45
• Total Factor (Qts): 0.38
• BL Factor (BL): 26 T – m
• Effective Moving Mass (Mms): 216 gr
• Equivalent Cas Air Load (Vas): 149 liters
• Effective Piston Area (Sd): 0.123 M²
• Maximum Linear Excursion (Xmax): 9 mm
• Half-Space Efficency (Eff): 2.2%

Mounting Information:

• Overall Diameter: 18.31" (394 mm)
• Bolt Circle Diameter: 17.3" - 17.6" (440-447 mm) 
• Bolt Hole Diameter: 0.25" (6.5 mm) 
• Front Mount Baffle Cut-Out: 16.5" (420 mm)
• Rear Mount Baffle: Cut-Out: 16.5" (420 mm)
• Depth: 7.9" (201 mm)