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The Alpine R-W12D4 is a 12-inch car subwoofer with dual 4-ohm voice coils and a 750-watt RMS power rating. It is a passive driver, so it needs a separate amplifier, and it works in either a sealed or ported box. The dual voice coils let you wire it to 2 or 8 ohms, which gives flexibility when matching an amp. It suits people building a loud, deep-bass system who will tune the enclosure and power it properly; it is not a drop-in upgrade for a factory stereo. Against similarly sized subs, it trades some efficiency for high power handling and output, and it needs a stout amp and a solid box to give its best.
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In stockSold by carsoundelectronics5
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Lowest price we've seen: $319.95 on Nov 10 at Audio Jam. Tracked across 2 stores since Nov 10.
Owners of the Type-R line generally report strong, deep output when it is fed clean power in a proper enclosure. Most criticism centers on the install: it is unforgiving of a weak amp or a poorly built box.
