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YORKVILLE - Synergy 2x 18” Powered Subwoofer Dual 18” Bass Reflex Powered Subwoofer: 6000 watts (program), 12,000 watts (peak) 2x18” LF woofers with 4.5” Voice Coils. Exceptionally high output and deep bass.

Marsoni M251S
Sale price$2399.50
Pay 4 payments of $599.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
YORKVILLE - Synergy 2x 18” Powered Subwoofer Dual 18” Bass Reflex Powered Subwoofer: 6000 watts (program), 12,000 watts (peak) 2x18” LF woofers with 4.5” Voice Coils. Exceptionally high output and deep bass.Synergy subwoofers are Yorkville Sounds most powerful, hard hitting bass bins, and are recommended for clubs, theatre installs, and touring productions. The dual 18 inch SA218S sits comfortably between the single 15 inch and dual 21 inch Synergy subs. It can be combined with an SA102 or SA153 as an independent system, or with the SA153 and SA315S as a 5 way system. Like all Synergy speakers, the SA218S is designed without compromise. It uses the best
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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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OneShopStop88
Charlottesville, US
★★★★★ 5
Monster cable
Size: 4/0AWG, Color: 3ft Black + 3ft Red
Well I now know what 4/0 or 0000 cable is. Huge but very easy to handle or bend to shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026
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bmo37
Phoenix, US
★★★★★ 5
Used for my rv battery bank
Size: 4/0AWG, Color: 3ft Black + 3ft Red
Good quality used these for my battery bank on my rv solar setup.
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Reviewed in the United States on December 1, 2025
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Chris M.
Natrona Heights, US
★★★★★ 5
Top Shelf
Size: 4/0AWG, Color: 3ft Black + 3ft Red
QUALITY !
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Reviewed in the United States on November 4, 2025
E
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Erin
Waukegan, US
★★★★★ 5
Thick wires
Size: 4/0AWG, Color: 10ft Black + 10ft Red
Heavy duty for my solar set up. These wires are thick. I've never used such thick wires for anything. Now I know why they're so expensive. There was some weight to these wire too. The diameter is larger than a dime. These are some serious wire.
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Reviewed in the United States on December 25, 2025
O
Verified Purchase
OneShopStop88
Los Angeles, US
★★★★★ 5
Monster cable
Size: 4/0AWG, Color: 3ft Black + 3ft Red
Well I now know what 4/0 or 0000 cable is. Huge but very easy to handle or bend to shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026

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