michael chuaMay 4, 2018Car Subwoofers18", Car Subwoofers, PW1870, Pyramid, Vintage
Pyramid PW1870-US Thiele & Small Parameters

Recommended for In-Car Use
Ported Box 20cuft. F3=29Hz

Recommended for In-Car Use
Sealed Box 8cuft. F3=42Hz
Sealed Box 15cuft. F3=37Hz, Q=1.07

Sealed Box 25cuft. F3=34Hz, Q=0.93
Sealed Box 35cuft. F3=33Hz, Q=0.87
Sealed Box 50cuft. F3=32Hz, Q=0.82
Sealed Box 72cuft. F3=32Hz, Q=0.78
Sealed Box 100cuft. F3=32Hz, Q=0.75
Sealed Box 200cuft. F3=32Hz, Q=0.72
Sealed Box 300cuft. F3=32Hz, Q=0.71
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