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YORKVILLE - Synergy 2x 21” Powered Subwoofer Dual 21" Bass Reflex Powered Subwoofer: 6000 watts (program), 17,000 watts (peak) 2 x 21-inch LF woofers with 4.5-inch voice coils. Exceptionally high output and deep bass.

Marsoni M251S
Sale price$3449.50
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Get it in 3 business days with 1 day shipping. Friday, May 29
YORKVILLE - Synergy 2x 21” Powered Subwoofer Dual 21" Bass Reflex Powered Subwoofer: 6000 watts (program), 17,000 watts (peak) 2 x 21-inch LF woofers with 4.5-inch voice coils. Exceptionally high output and deep bass.This powerful dual 21 inch subwoofer offers the highest peak power and deepest bass response of any speaker in the Synergy series, Yorkville Sounds largest and most powerful point source system. The SA221S can be combined with an SA153 as an independent system, or with the SA153 and SA315S as a 5 way system. If it were any more powerful, it would have to be measured on the Richter scale. Features 17000 W Peak Power (6000 W Program) 2x 21 Neodymium
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Your YORKVILLE - Synergy 2x 21” Powered Subwoofer Dual 21" Bass Reflex Powered Subwoofer: 6000 watts (program), 17,000 watts (peak) 2 x 21-inch LF woofers with 4.5-inch voice coils. Exceptionally high output and deep bass. orders ship within 1-2 business days.

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  • We offer a 30-day return/exchange service after receiving.
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ed gasior
Waukegan, US
★★★★★ 5
Easy
Size: CF11966&CA12166
Perfect fit. Easy to install. Good price. When changing the cabin filter the screw removal is a little easier if you notch out the plastic in front of it. Its behind the glove box and is not noticeable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
J
Verified Purchase
James B. Smith
Houston, US
★★★★★ 4
Filter My Cash
Size: CF12150&CA10262
Awesome quality filters and fit just like original equipment. Dealer wanted $140.00 to install. $21 And ten minutes later I was done. Got them next day.
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Reviewed in the United States on May 3, 2026
J
Verified Purchase
Jessie
Boise, US
★★★★★ 5
Great product
Size: CF10134&CA11476
Price great. Fit perfectly
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Reviewed in the United States on May 23, 2026
W
Verified Purchase
William
Lowell, US
★★★★★ 5
Fit
Size: 8.8" x 9.3" x 1.1"
Product looks and works well
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Reviewed in the United States on May 7, 2026
C
Verified Purchase
Chris G
Phoenix, US
★★★★★ 5
Easy installation
Size: 8.8" x 9.3" x 1.1"
It fit my 2011 Honda accord coupe 👍🏼
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Reviewed in the United States on March 15, 2026

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