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Harmony Audio HA-ML181 Monolith 18" Car Stereo Competition SPL Sub 3500W Dual 1 Ohm Subwoofer

  • Based on 14 reviews
Condition: New
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$379.95 Why this price?

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Availability: In Stock.
Fulfilled by HiFi-Soundconnection

Arrives Wednesday, May 21
Order within 1 hour and 46 minutes
Available payment plans shown during checkout

Size: 1 Ohm


Style: Single Pack


Features

  • HIGH-QUALITY CONSTRUCTION: Crafted with premium materials, the subwoofer's cone is designed for rigidity and minimal distortion, even under intense use. The robust construction ensures durability, making it capable of handling the challenges of competition-grade setups.
  • 3500W PEAK POWER HANDLING: With an impressive peak power handling of 3500 watts, the Monolith 18" Competition Subwoofer delivers exceptional and authoritative bass, making it suitable for enthusiasts who crave high-performance audio experiences.
  • DUAL 1-OHM IMPEDANCE: The subwoofer features a dual 1-ohm impedance configuration, providing flexibility in wiring options. This allows users to customize the impedance to match their amplifier setup, ensuring optimal power transfer and performance.
  • VENTED T-YOKE BACK PLATE: Equipped with a vented T-yoke back plate, the subwoofer efficiently dissipates heat generated during heavy use. This feature ensures the subwoofer remains cool under demanding conditions, contributing to its reliability and longevity.
  • ADDITIONAL ITEM SPECS: The product weighs 61.1 pounds and has dimensions of 21.46 x 21.26 x 16.67 inches, featuring speakers with a maximum output power of 1750 Watts.

Brand: Harmony Audio


Speaker Maximum Output Power: 1750 Watts


Connectivity Technology: wired


Audio Output Mode: Stereo


Mounting Type: Car Mount


Model Name: HA ML181


Speaker Type: Surround Sound, Subwoofer


Special Feature: Bass Boost


Recommended Uses For Product: For Cars


Subwoofer Diameter: 18 Inches


Unit Count: 1 Count


Controller Type: Voice control


Surround Sound Channel Configuration: 1.0


Color: Monolith - 1 Sub


Product Dimensions: 21.46"D x 21.26"W x 16.67"H


Impedance: 1 Ohm


Is Waterproof: FALSE


Warranty Type: Extended


Number of Items: 1


Control Method: Voice


Speaker Size: 18 Inches


Power Source: Corded Electric


Woofer Diameter: 18 Inches


Vehicle Service Type: Car


Audio Driver Type: Dynamic Driver


Audio Driver Size: 18 Inches


Subwoofer Connectivity Technology: Wired


Specific Uses For Product: In-car audio systems


UPC: 603167659076


Style: Single Pack


Manufacturer: Harmony Audio


Item Weight: 61.1 pounds


Item model number: HA-ML181


Date First Available: June 20, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Overall happy with purchase, well built, sounds good
Size: 1 Ohm Style: Single Pack
Subwoofer is built well, nice and heavy . Have two of them running on a taramps bass 5k at 1 ohm. I feel they can take quite a bit more . But the sound is nice , the enclosure I have them in is 13cubic ft ported with 15” diameter octoport.. tuned to around 32 hz . Overall I’m happy with this purchase ... show more
Reviewed in the United States on April 20, 2021 by Kyle Crawford Kyle Crawford

  • HA-ML181
Size: 1 Ohm Style: Single Pack
I got my sub a day early, it was double boxed and came with screws. I am impressed with the size of this sub and the quality of its built everything looks solid for the price. I made a sealed box @ 6.25cu' (5.76cu' after displacement) it sounds ok but I'm going to port it after I break it in. I would buy this sub again ... show more
Reviewed in the United States on April 15, 2021 by Howard M.

  • Super underrated
Size: 1 Ohm Style: Single Pack
These subs are super underrated i have them on an 8k watt amp and they're laughing at the power. Me that throw each one on per 8k.
Reviewed in the United States on August 8, 2022 by Bryan Somerville Bryan Somerville

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