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Harmony Audio

Harmony Audio HA-ML121 Monolith 12" Car Stereo Competition SPL Sub 3000W Dual 1 Ohm Subwoofer

  • Based on 12 reviews
Condition: New
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$309.95 Why this price?

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Jul 26
Order within 10 hours and 27 minutes
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Size: 1 Ohm


Style: Single Pack


Features

  • HIGH-QUALITY CONSTRUCTION: The subwoofer features a robust construction with a focus on durability and performance. The cone is crafted from high-quality materials to ensure rigidity and minimize distortion, even under demanding conditions. The subwoofer is built to withstand the rigors of competition and continuous high-power use.
  • 3000W PEAK POWER HANDLING: The Monolith 12" Competition Subwoofer boasts an impressive peak power handling of 3000 watts, making it capable of delivering thunderous and deep bass notes. This high power rating is ideal for users who crave an immersive and impactful audio experience.
  • DUAL 1 OHM IMPEDANCE: With a dual 1-ohm impedance configuration, this subwoofer provides versatile wiring options. Users can choose from various wiring configurations to match their amplifier setup and achieve the desired impedance for optimal performance.
  • DUAL VOICE COIL DESIGN: The dual voice coil (DVC) design enhances the flexibility of wiring configurations. It allows users to customize the impedance and match the subwoofer to their amplifier's capabilities, providing options for different setups and applications.
  • ADDITIONAL ITEM SPECS: The 12" Monolith Series Car Subwoofer, weighing 50.75 pounds and with dimensions of 16 x 16 x 14 inches, delivers powerful audio performance in a compact and substantial design.

Brand: Harmony Audio


Speaker Maximum Output Power: 3E+3 Watts


Connectivity Technology: wired


Audio Output Mode: Stereo


Mounting Type: Car Mount


Model Name: HA ML121


Speaker Type: Subwoofer


Recommended Uses For Product: car


Subwoofer Diameter: 12 Inches


Unit Count: 1 Count


Controller Type: Voice control


Surround Sound Channel Configuration: 1.0


Color: Monolith - 1 Sub


Product Dimensions: 15.87"D x 16.04"W x 13.36"H


Impedance: 1 Ohm


Is Waterproof: FALSE


Warranty Type: Limited


Number of Items: 1


Control Method: Voice


Speaker Size: 12 Inches


Power Source: Corded Electric


Woofer Diameter: 12 Inches


Vehicle Service Type: Car


Audio Driver Type: Dynamic Driver


Audio Driver Size: 12 Inches


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: coaxial, RCA, aux, USB, HDMI, XLR


Specific Uses For Product: car


UPC: 603167659038


Style: Single Pack


Manufacturer: Harmony Audio


Item Weight: 49.9 pounds


Item model number: HA-ML121


Is Discontinued By Manufacturer: No


Date First Available: June 20, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 26

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.

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

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great subwoofer
Size: 1 Ohm Style: Single Pack
Review Image by Jamie munger Jamie munger
Review Image by Jamie munger Jamie munger
I originally ordered one of these 2ohm subs for my wife’s Nissan and I loved it. I ended up buying this 1ohm sub for my truck and I have it wired 2ohm and have the harmony sound box as well. I have an nvx nda104 3k mono block powering this sub and it delivers great sound and hard clean bass. The cone and dust cap are carbon fiber and stitched and rugged. The box and sub weighs over 100 pounds,fyi so if you’re just looking for a basic sub keep moving. This sub is power hungry either feed it the power it needs or don’t waste your time. I broke my sub in at half power for a solid two weeks and it’s been perfect since. I’ve had numerous other top brands and cheap china garbage and this sub is beyond worth the money and makes other top brands look really bad when the price comes to play. Again this is not a beginner or just a small upgrade subwoofer. If you by this sub know it’s 3k watts rms it requires a suitable amp and an amp powering range his sub is gonna draw at least 100 amps and it’s going to require the big 3 upgrade, a second battery and isolator and by all means not a cheap wiring kit. Zero guage is a must. With that said if you don’t plan on all of that don’t buy this sub because you will most definitely over work your amp because it will be starving for power and that will send a clipped signal to your sub it will get hot and it will destroy your sub your amp and if your fuse doesn’t pop it will definitely melt an under sized power wire and probably start a fire. I have close to 3100 watts of clean power going to this sub and it can take more no problem. If you are a bass head this sub destroys a lot of other brands on the market and is worth every penny and is equivalent to the exo line from ct sounds but half the price and all of the power and quality. ... show more
Reviewed in the United States on May 31, 2024 by Jamie munger Jamie munger
    • This thing slaps
Size: 1 Ohm Style: Single Pack
I was very indecisive about this sub because it was not a well known name brand and had no videos or not very many reviews. But I took the chance and this thing is amazing had it about 3-4 months and it hits hard every time needs a lot of air has beefy high temp voice coil with black glue huge motor and nice kinda stiff surround I have it on a 1800watt taramps turned all the way up and it sounds amazing ... show more
Reviewed in the United States on June 22, 2021 by Colby
    • There awesome subs well worth the 300$
Size: 1 Ohm Style: Single Pack
I wrote a review a few months ago when I first got one so now is the 6 month update. I love these bad boys!!! They def hit hard has hell in every box I’ve put em in. I’m doing a custom bench in back of my f150 with 4 of these and two hifonics colusses 6000 watt amps. I’m jus waiting on my other sub now and it’s going in. I can’t wait!!! But def worth the money compared to sundown and dc audio. It was a toss up because I heard Skar is good to but I went with these and I’m glad I did. Very sturdy construction good motor nice stiff sub but not to stiff and spider is big so it flexes more than the others. ... show more
Reviewed in the United States on April 4, 2020 by mike j Jones

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