3
PRODUCT FEATURES
PRODUCT SPECIFICATIONS
T/S SPECS SPF10D4
SPF12D4
Sensitivity (1W/1m)
SPL
82.9 dB
85.8 dB
DC Resistance
Re
6.410 Ω
7.240 Ω
Free Air Resonance
Fo
27.409 Hz
23.171 Hz
Equivalent Stiffness
Vas
46.185mM
116.847mM
Mechanical Q
Qms
7.757
5.802
Electrical Q
Qes
0.857
0.584
Total Q
Qts
0.739
0.531
Moving Mass
Mms
124.362 g
174.423 g
Motor Force
BL
13.464 TM
17.739 TM
Cone Surface Area
Sd
34.636 mM
55.155mM
SPF10D4
SPF12D4
Structure
10” (25.4cm) Woofer 12” (30.4cm) Woofer
Max Power
1000 Watts 1000 Watts
Nominal Power
300 Watts 300 Watts
Impedance
2.5” (63mm) 4Ω Dual Voice Coil 2.5” (63mm) 4Ω Dual Voice Coil
• 2.5” (63mm) 4 Layer Dual 4 Ohm VC w/
Aluminum Former
• IMPP Cone with Foam Surround
• 40 oz. Ferrite Magnet
• Ultra Thin Stamped Steel Frame Design
• Blue Zinc Finished Top and Bottom Plates
• Mixed C Fiber Spider
• Heavy Gauge Spring Terminals