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HK Audio LINEAR-SUB-4000-U - 2400 Watt 2 x 18" Passive Subwoofer

Marsoni M251S
Sale price$1299.50
Pay 4 payments of $324.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
HK Audio LINEAR-SUB-4000-U - 2400 Watt 2 x 18" Passive SubwooferGTIN 13 LINEAR SUB 4000 is a powerful 18? dual vented bandpass subwoofer. It is compatible with all LINEAR 5 full range speakers and mid high units and delivers an impressively powerful low frequency response from 30 to 100 Hertz. The subwoofer is the recommended extension to the LINEAR 5 LTS long throw powerhouse. It can be used as a subwoofer extension to the existing LINEAR SUB 2000, delivering powerful low bass with optional frequency separation.
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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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4.2 ★★★★★
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Verified Purchase
orsinos12
Chelsea, US
★★★★★ 5
Good shelf.
Size: 8 Inch
Great small shelf easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
C
Verified Purchase
Cynthia Bochert
Pawtucket, US
★★★★★ 5
Well made
I have not installed this yet but it is well made at a good price and should give me extra space in my camper
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
S
Verified Purchase
scott sipprell
Natrona Heights, US
★★★★★ 5
You'll flip over the added countertop!
Good product, seems well made. Installation was simple enough. It gives us a little extra counter space when needed. The only issue is it blocks the entry a little when flipped up in our RV. Just look before you step in.
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Reviewed in the United States on July 28, 2025
B
Verified Purchase
brian johnson
Boise, US
★★★★★ 3
Shelf
Didn't come with necessary hardware.
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Reviewed in the United States on April 23, 2024
J
Verified Purchase
Jeffrey Kunstman
Los Angeles, US
★★★★★ 5
Works great for our RV.
Perfect for a side table for my wife's coffee pot in our RV. She puts the coffee pot in the cabinet when we leave from camping and put the shelf down. Exactly what we needed.
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Reviewed in the United States on November 6, 2025

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