View Full Version : Ultra Audio A-12 12" subwoofer

05-19-2012, 12:53 AM
Item(s) for Sale: UltraAudio A-12 12" subwoofer

Item(s) Description/Condition: Like new condition, really no scuffs or anything


Shipping and Miscellaneous Item Information:
Thiele Small Parameters: 10
Nominal Impedance Znom ohms 4.0
DC Resistance DCR ohms 4.19
Resonant Frequency Fs Hz 27.33
Mechanical Q Qms 6.66
Electrical Q Qes 0.36
Total Q Qts 0.34
Xmax (linear) in 0.433
Xmax (mechanical) in 0.866
Sensitivity 2.83 volts dB 88.02
Effective Piston Area Sd m2 0.0319
Acoustic Compliance Vas liters 39.47
Moving Mass Mms grams 124.15
Suspension Compliance Cms μm/N 273.1
Motor Strength BL TM 15.85
Magnet and Voice Coil:
Voice Coil Diameter d in 2"
Voice Coil Length hvc in 1.2"
Voice Coil Layers n 4
Voice Coil Type Single
Continuous Power watts 250
Maximum Power watts 500
Weights and Dimensions:
Magnet OD in 5.24
Magnet Thickness in 0.98
Frame OD w/gasket in 10 9/16
Mounting Hole in 9 1/8
Mounting Depth in 5.12

Item Pictures:
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05-19-2012, 04:06 PM
thats a nice SQ woofer, GLWS