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JL Audio Sub Specs Help...

pro_gmh

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I have just power my sub and amp, but the printout of specs do not tell me the RMS, Max power etc. Heres what i have...
JL Audio Subwoofer 12W4-4, Powered by a Kenwood 5ch Amp KAC-859
(On the sub it says 12W Ø4 so the closest and only model number i could find is 12W4-4)

Here are the specs of my sub.

Fs (free-air resonance): 23.2Hz
Qts (total speaker "Q"): 0.396
Qes (electrical "Q"): 0.416
Qms (mechanical "Q"): 7.898
Vas (equivalent complience): 5.14 ft³
Xmax (linear excursion one-way): 10.2mm
Efficiency (1W/1m)*: 88.2dB
Sd (effective piston surface area): 82.5 in²
Re (DC resistance): 3.13 Ω
Znom (nominal independance): 4 Ω
Pt (continuous thermal power handling): 200 Watts
 
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