丹麥製造 VIFA P21W0-28, 8" 中低音單元 一 對
8 ohm
全原裝
100％ 正常
十分靚聲!
新舊如相片

Magnesium basket
Mineral filled poly cone
Rubber surround
40mm VC diameter
Flat response
Ideal for bass reflex
Flange 215mm (8.46")
Cut-out 186.5mm (7.34")
Depth 80.4 (3.16")

Some possible box alignments:

0.5 - 0.7 cubic foot sealed for 3dB down of 72Hz, 6db down of 52Hz
1.4 to 1.6 cubic foot with 2" vent by 4" long for a 3dB down of 40Hz
1.2 to 1.4 cubic foot with 2" vent by 3" long for a 3dB down of 44Hz