ZS 12D4-19

SPECIFICATIONS :

SQL/SPL Subwoofer 12″ Double Voice Coil
Nominal Impedance ( Zn ) : 4.0 Ω
Resonance Frequency ( Fs ) 2 Ω / 4 Ω : 37,649 Hz
Sensitivity ( 1W/1M ) 2Ω / 4Ω : 89,7±2 / 87,1±2 dB
Voice Coil Diameter : 2,6 Inch
Material of Magnet : Sr. Ferrite
Diameter of Magnet ( mm / Pcs ) : 190 / 2
Power Handling ( Tone / RMS / Peak ) : 500 / 1000 / 2000 Watts
Cone & Surround Material : Non-Pressed Pulp / High-Density Foam
Dust Cap Material : Polypropylene Mica

Electrical Data
• Nominal Impedance (Zn) : 4.0 Ω
• DC Resistance (Re) : 3.0 Ω
• Maximum Impedance(Zm)2Ω/4Ω : 22.337 / 25.598 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 : 37.649 Hz
• Mechanical Q Factor (Qms)2Ω/4Ω : 5.011 / 5.101
• Electrical Q Factor (Qes)2Ω/4Ω : 0.372 / 0.697
• Total Q Factor (Qts)2Ω/4Ω : 0.346 / 0.613
• Force Factor (BL)2Ω/4Ω : 14.811 / 15.293 T-M
• Moving Mass without Air Load (Mmd) : 223.424 g
• Moving Mass including Air Load(Mms) : 229.677 g
• Suspension Compliance (Cms) : 77.805u M/N
• Effective Piston Area(Sd) : 490 cm2
• Equivalent Volume (Vas) : 26.621 Ltrs
• Reference Efficiency(No)2Ω/4Ω : 0.370 / 0.197 %
• Frequency Response（Free Air）2Ω/4Ω : Fo~250 / Fo~400 Hz
• Sensitivity(1W/1M)2Ω/4Ω : 89.7±2 / 87.1±2 db

Voice Coil and Magnet Parameters
• Voice Coil Diameter : 2.6 Inch
• Voice Coil Layer : 2+2
• Voice Coil Former : Black Aluminum
• Voice Coil Wire : AI-Cu
• Height of the Gap : 12 mm
• Linear Excursion : ±12 mm
• Material of Magnet : Sr. Ferrite
• Diameter of Magnet (mm/pcs) : 190 / 2
• Weight of Magnet : 200 oz
• Magnetic Flux Density : N/A Gauss
• Dust Cap : PP Mica
• Copper Ring : Non

Power Handling
• Tone / RMS / PEAK 500 / 1000 / 2000 Watts

Cone & Surround Material
• Non-Pressed Pulp / High-Density Foam