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The Beyma 12G40 is a 12-inch, 8-ohm low-frequency driver built for high-output woofer duty. Its 97 dB sensitivity and 500 W AES rating let it play loud from modest amplifier power, and the 3-inch copper voice coil on a polyimide fiberglass former is made to take heat. Buyers use it as a drop-in replacement in bass cabinets and as a stereo subwoofer pair, reporting punchy bass and no bottoming out when pushed. It is a raw driver, not a finished subwoofer, so it suits DIY builders and repair jobs rather than plug-and-play buyers.
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Lowest price we've seen: $220.64 on Nov 10 at PARTS EXPRESS. Tracked across 1 store since Nov 10.
Owners who installed the 12G40 describe it as a great-sounding replacement that handles power without non-linear distortion and takes low bass notes with ease. Several note it has not bottomed out even when pushed hard, and it works well as a stereo subwoofer pair.
It is rated at 500 W AES power handling, with a maximum of 1000 W, and has a sensitivity of 97 dB (2.83V at 1 m).
The 3-inch voice coil uses copper wire wound on a Kapton/polyimide former, a polyimide fiberglass construction. Xmax is ±7 mm, and peak-to-peak excursion before damage is 28 mm.
The driver mounts with 8 holes on an 11.6-inch bolt circle. It needs a 10.9-inch baffle cutout and 5.2 inches of depth.