SKU: 33400189847

B2 Audio RIOT Series 15" 750W RMS Dual 4-Ohm 3" Voice Coil Subwoofer OPEN BOX

Sale price$148.47 Regular price$164.97
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

B2 Audio RIOT Series 15" 750W RMS Dual 4-Ohm 3" Voice Coil Subwoofer OPEN BOXMissing original box, no spec sheet or owner's manual, minor install marks, few marks (scratches) on surround. Dual 4 Ohm Voice Coils: Dominate your sound system with flexibility and precision, allowing for seamless integration and customization to suit your audio preferences and amplifier setup. Robust 3" Voice Coil: Built for battle, this subwoofer boasts a formidable 3" voice coil that ensures unrivaled performance and durability, even under the

  • Missing original box, no spec sheet or owner's manual, minor install marks, few marks (scratches) on surround.
  • Dual 4-Ohm Voice Coils: Dominate your sound system with flexibility and precision, allowing for seamless integration and customization to suit your audio preferences and amplifier setup.
  • Robust 3" Voice Coil: Built for battle, this subwoofer boasts a formidable 3" voice coil that ensures unrivaled performance and durability, even under the most extreme conditions.
  • Revolutionary Engineering: Engineered to disrupt the status quo, the B2 Audio RIOT Series 15" Subwoofer redefines what's possible in sound reproduction, delivering a revolutionary audio experience that will leave competitors trembling in its wake.
  • Join the Revolution: Whether you're a seasoned audiophile or a newcomer craving adrenaline-pumping bass, this subwoofer is your ticket to audio supremacy. Embrace the RIOT and unleash the beast within your sound system.


B2 Audio RIOT Series 15" 750W RMS Dual 4-Ohm 3" Voice Coil Subwoofer OPEN BOX



In perfect working condition


Has been mounted


Small scratches around surround, dust cap, cone & bottom of magnet


Missing Specs Sheet



Open-box items are not subject to returns. They are sold "As Is". All requests for returns will not be accepted.



This Listing Includes:



  • (1) B2 Audio RIOT Series 15"  Subwoofer


Description:


Prepare to ignite your audio experience with the B2 Audio RIOT Series 15" Subwoofer. This isn't just another speaker; it's a powerhouse of raw energy and unyielding performance, designed to dominate your sound system with relentless force. With a commanding 750W RMS power output, dual 4-ohm voice coils, and a formidable 3" voice coil, this subwoofer is engineered to obliterate the competition and leave a trail of sonic destruction in its wake. Feel the adrenaline surge through your veins as every beat reverberates with spine-tingling intensity. Whether you're craving bone-rattling bass for your car audio setup or seeking to unleash chaos upon your home theater, the B2 Audio RIOT Series 15" Subwoofer is your weapon of choice. Brace yourself for an auditory assault like no other. This is not just sound; this is the revolution.


Specifications:



  • RMS Power Handling: 750 Watts

  • Max Power Handling: 1500 Watts

  • Push Terminal Wire Gauge: 8 Ga

  • Nominal Impedance: Dual 4-Ohm

  • Voice Coil Diameter: 3"

  • Frequency Response: 10 Hz - 500 Hz

  • Sensitivity: 92.6 dB

  • Magnet Weight: 240 oz

  • Displacement Volume: 7.4 L / 0.26 cu.ft.


Thiele & Small Parameters



  • Free Air Resonance (Fs): 30 Hz

  • Resistance (Re): 3.2 Ohm

  • Mechanical Factor (Qms): 7.09

  • Electrical Factor (Qes): 0.86

  • Total Factor (Qts): 0.76

  • Equivalent Volume (Vas): 61.3 L

  • Compliance (Cms): 70 um/N

  • BL Factor (BL): 78.4 BL^2/RE

  • Moving Mass (Mms): 368.9 g

  • Excursion Max (Xmax): 20 mm


Measurements:



  • Overall Diameter: 15.35" / 390 mm

  • Mounting Diameter: 13.78" / 350 mm

  • Bolt Pattern Diameter: 14.76" / 375 mm

  • Overall Depth: 9.37" / 238 mm

  • Mounting Depth: 8.11" / 206 mm


Enclosure Suggestions:


Sealed:



  • 60 L / 1.125 cu.ft

  • Otc: 0.76


Ported Compact:



  • 80 L / 2.83 cu.ft

  • Port: 32.55 sq. in.

  • Length : 18.22" / 46.3 cm

  • FB: 38 Hz


Ported:



  • 190 L / 6.73 cu.ft

  • Port Area: 32.55 sq.in

  • Length: 9.1" / 23.1 cm

  • FB: 32 Hz

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 33400189847

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4.1 ★★★★★
Based on 16 reviews
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M
Verified Purchase
Michael Arnhold
Grantham, US
★★★★★ 5
Very comfortable Slippers. Great buy!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
I bought these to replace a pair of slippers that I have had for years that are very similar to the slippers I bought, but I had worn a hole in the leather on mine, so I had to find something new and similar. These slippers are worth the money they are very comfortable, and I am sure they will last for years. They are a little tight around the ankle cuff but they are still new and I am sure they will wear in a little more when I start wearing them more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2025
J
Verified Purchase
Jenn
Fort Morgan, US
★★★★★ 3
Great slippers but disappointing quality.
Size: 7.5-8.5 Women/6-7 Men, Color: Ash, Size: 7.5-8.5 Women/6-7 Men, Color: Ash
Extremely comfortable, attractive slippers but the stitching came loose on both leather trim areas almost immediately. I tried to sew/glue down the stitching (as seen in photo) but it kept unraveling. Disappointing as these slippers are great in every other way (though they do run a bit big...I wear a 9 but ended up with a 7.5-8.5 which fits with a bit of room to spare even with thick socks). I just hope they hold up after my latest attempt to stop the thread from pulling out any more as I do really love wearing them. Perhaps I just got a bum pair?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2024
L
Verified Purchase
Liza Jane
Cuba, US
★★★★★ 5
Quality and comfort
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Comfortable and fit well. I got these to replace a very old pair that finally wore out! Warmth is medium (I wear puffer booties for when it's really cold). Quality on these is great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
V
Verified Purchase
V M T R
Pawtucket, US
★★★★★ 5
Can't go wrong with Acorn for as long as they last!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Acorn is just a great company all around. I had bought my husband these slippers over 20 years ago. They are still in great shape although the sole has worn in some places. But nothing's coming apart! However, I decided to replace them for him. His foot is 10.5 and they are a little hard to get on right away-of course, after over 20 years of having "worn in" the original pair, anything would feel tight. So I'm not holding this against them. They will relax with use. The only difference is that the original sole was black and these are tan. I think I would prefer the black, but since it's only being worn in the house, no big deal. My husband has really cold feet and these slippers never fail to warm his feet right up! He said they feel really soft to walk in and like the cushioning. They're not too heavy and fit him great! I have Acorn slippers myself that I've worn every single day in the house and outside to the mailbox too. They last.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
M
Verified Purchase
Michael
Lexington, US
★★★★★ 4
Very warm.
Size: 13.5-14.5 Women/12-13 Men, Color: Navy Blue
Very warm and comfortable. A little difficult to put on with the collared top.
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Reviewed in the United States on January 19, 2026

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