Harman Infinity Alpha 6520, Installation Manual

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Specifications
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Type: 6-1/2” (165mm) 2way component
system car speaker
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Power Handling: 45Wrms, 315W peak
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Sensitivity (@ 2.83V): 91dB
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Frequency Response: 55Hz – 20kHz
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Impedance: 4ohms
Thiele-Small Parameters
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BL (Tm): 3.588
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DCR (ohm): 3.2
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Mms (g): 11.01
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Sd (cm2): 128.68
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Cms (μm/N): 348.261
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Vas (l): 8.189
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Fs (Hz): 85
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Qes: 1.398
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Qms: 3.618
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Qts: 1.008
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Crossover Point: 5.0 kHz