SPECIFICATIONS :
SQL/SPL Subwoofer 12″ Double Voice Coil
Nominal Impedance ( Zn ) : 4.0 Ω
Resonance Frequency ( Fs ) 2 Ω / 4 Ω : 35,112 Hz
Sensitivity ( 1W/1M ) 2 Ω / 4 Ω : 87,2±2 / 84,2±2 dB
Voice Coil Diameter : 3,2 Inch
Material of Magnet : Sr. Ferrite
Diameter of Magnet ( mm / Pcs ) : 220 / 2
Power Handling ( Tone / RMS / Peak ) : 1000 / 2000 / 4000 Watts
Cone & Surround Material : Glassfiber composite Non-Pressed Pulp /
Long Extended High-Density Foam
Dust Cap Material : Glassfiber Composited
Electrical Data
• Nominal Impedance (Zn) : 4.0 Ω
• DC Resistance (Re) : 3.2 Ω
• Maximum Impedance(Zm)2Ω/4Ω : 20.757 / 21.636 Ω
• Minimum impedance/at Freq (Zmin)@2Ω (Ω/Hz) : 2.824 / 70.548
• Minimum impedance/at Freq (Zmin)@4Ω (Ω/Hz) : 4.322 / 70.548
TS Parameters
• Resonance Frequency (Fs)2Ω/4Ω : 35.112 Hz
• Mechanical Q Factor (Qms)2Ω/4Ω : 6.720 / 6.521
• Electrical Q Factor (Qes)2Ω/4Ω : 0.581 / 1.169
• Total Q Factor (Qts)2Ω/4Ω : 0.535 / 0.991
• Force Factor (BL)2Ω/4Ω : 12.165 / 12.132 T-M
• Moving Mass without Air Load (Mmd) : 237.498 g
• Moving Mass including Air Load(Mms) : 243.751 g
• Suspension Compliance (Cms) : 84.292u M/N
• Effective Piston Area(Sd) : 490 cm2
• Equivalent Volume (Vas) : 28.841 Ltrs
• Reference Efficiency(No)2Ω/4Ω : 0.200 / 0.103 %
• Frequency Response（Free Air）2Ω/4Ω : Fo~320 / Fo~650 Hz
• Sensitivity(1W/1M)2Ω/4Ω : 87.2±2 / 84.2±2 db
Voice Coil and Magnet Parameters
• Voice Coil Diameter : 3.2 Inch
• Voice Coil Layer : 2+2
• Voice Coil Former : Black Aluminum
• Voice Coil Wire : PI-CCA
• Height of the Gap : 20 mm
• Linear Excursion : ±17.5 mm
• Material of Magnet : Sr. Ferrite
• Diameter of Magnet (mm/pcs) : 220 / 2
• Weight of Magnet : 250 oz
• Magnetic Flux Density : N/A Gauss
• Dust Cap Glassbiber : Composited
• Copper Ring : Non
Power Handling
• Tone / RMS / PEAK 1000 / 2000 / 4000 Watts
Cone & Surround Material
• Glassfiber composite Non-Pressed Pulp / Long Extended High-Density Foam
