


KEF Reference 8b Subwoofer
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
KEF Reference 8b SubwooferFor power with accuracy the Reference 8b sub has two 500W Class D amplifiers, each driving a 228mm (9 inch) long throw, ultra low distortion driver. These are connected back to back in a heavily braced, acoustically inert cabinet. The result is low distortion bass with effortless body and weight. Specifications: Model REFERENCE 8b LF Drive unit 2 x 225 mm (9in.) Frequency range at 90dB output in free space mode ( 6dB) 18Hz Frequency response at 90dB
Quick Dispatch:
Your KEF Reference 8b Subwoofer orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Product Reviews
★★★★★ 5
Easy install and looks good
Exactly as expected. Easy to install and look great.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Extremely satisfied
Size: 24x5.8, Color: Black, Size: 24x5.8, Color: Black
Very nice. I am extremely happy with them. I used painters tape to hold the bracket in place while I screwed it in, worked like a charm 😁 holds a lot of items
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Reviewed in the United States on April 11, 2026
★★★★★ 3
Good enough
Size: 15x6.8, Color: Black
As cheap as the day is long but functional. These are basically made out of highly compressed paper and finished to feel like wood. The first one I put up was good with a little tilt to the back which is fine. The second one has a more severe tilt and I had to bend the bracket down to decently level it out. They are sturdy enough to hold quite a bit of weight and look good for what they are. I'm not impressed but I'm also not disappointed, the price is a bit steep for what they are but they serve their purpose.
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Reviewed in the United States on November 15, 2025
★★★★★ 4
Great, but bring your own inserts.
Size: 24x7.9, Color: Black
These work great, easy to install. Happy with them. Only problem was the instructions say don’t use the include inserts on wallboard, which meant I had to go out and purchase my own. That’s OK, because I like to use inserts I trust.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Sturdy and attractive
Size: 15x6.8, Color: Black, Size: 15x6.8, Color: Black
Love the shelves, great quality and design. They are very sturdy and perfect for my need. I ordered wine glass holders from Amazon and attached them to the shelves. Impressed and amazed at the look.
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Reviewed in the United States on November 18, 2025