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Subwoofer - 12 Volt Tuning

Infinity - Kappa Perfect 12d VQ Subwoofer

ConclusionIs this subwoofer the answer to all of your bass wants and needs due to its amazing versatility? It very well may be. It's a wonderful sounding sub with excellent detail and sound quality. It can be used in just about any type of enclosure, from a tiny sealed box to a moderately sized sealed or a vented, and even in an infinite-baffle application. All of that ability in one subwoofer? Impressive for sure. -E.H. v

Get more details on this fine product at www.caraudiomag.com or www.importtuner.com.

SUBJECTIVE SCORE CHART
Points Infinity  
Possible 12d VQ  
Overall Sound Quality 50 40
Tonal Balance 10 8
Low Frequency Extension 10 7
Clarity at Low Volume 10 8
Clarity at High Volume 10 8
Impact 10 9
Total 100 80
Data Chart
Brand Infinity
Model 12DVQ
MSRP $444.95
Warranty 3 years
Mechanical Specifications
Weight 22 lbs.
Rear Mounting Clearance 6.813"
Woofer Magnet Dim. 178x22x2
Voice Coil Diameter 81.9mm (3.2")
Voice Coil Winding Layers 4 (two 2 layer coils)
Measured T/S Parameters
Nominal Impedance (ohms) 2
Revc (ohms) 1.79
Sd (cone area in sq. meters) 0.035
Computer Simulation Data
Enclosure size for simulation (cubic feet)
Sealed (Mid Q insert) 1.0 (50% fill material)
Vented (Low Q insert) 1.75 (32Hz / 15% fill)
-B (F3) at 2.83V  
Sealed (Qtc=0.89) 41.4Hz
Vented 34.8Hz
Voltage to achieve Xmax + 15%
Sealed 40V
Vented 43V
SPL at Xmax + 15% (17.8mm)
Sealed 115.5dB anechoic
Vented 117.5dB anechoic
SPL in-car at 2.83 volts
40 Hz 98.0 dB
80 Hz 99.3 dB
Max SPL 128.0 dB
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