★★★★★ 5
Plug and play
Easy plug and play.
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Reviewed in the United States on January 9, 2026
B&C 21” 3400 Watt 8 Ohms Low Distortion Woofer w/ Neodymium magnet - 21SW115-8
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
B&C 21” 3400 Watt 8 Ohms Low Distortion Woofer w/ Neodymium magnet - 21SW115-8Overview Features 3400 W continuous program power capacity 116 mm (4. 5 in) split winding copper voice coil 30 1000 Hz response 97 dB sensitivity 60 mm peak to peak excursion before damage Neodymium magnet allows a very high force factor and linear excursion Double silicone spider with optimized compliance Ventilated voice coil gap for reduced power compression Aluminium demodulating ring for very low distortion Specifications Nominal Diameter: 530 mm
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Exchange/Return Notes
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- Final sale items are not eligible for returns or exchanges.
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4.9 ★★★★★
Based on 2351 reviews
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Product Reviews
★★★★★ 5
Excelente producto.
Case perfecto
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Worked out great
Replaced on my E46 with this, it had better finish than the original, since it had a worn coating. Fitted like OEM without the OEM price.
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Reviewed in the United States on August 31, 2023
★★★★★ 5
Perfecto
Casa perfecto
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Reviewed in the United States on August 7, 2025
★★★★★ 4
Good product
Fits nice. No proplem to install
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Reviewed in the United States on August 14, 2023
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