The Loudest 18 Inch Subwoofer For 2024

Dan Simmons By, Dan Simmons
Loudest 18 Inch Subwoofer
Loudest 18 Inch Subwoofer

The Rundown

1. Best Of The Best: Harmony Audio 18" Subwoofer

Harmony Audio's 18-inch subwoofer features dual 2-ohm voice coils. It is also used in a variety of applications including home theatre and PA systems. This large format subwoofer is capable of producing up to 3500 watts of peak power and producing high-quality sound. Read Review

2. Runner Up: PRORECK 18-inch Subwoofer

PRORECK 18-inch Subwoofer is built with quality in mind. The 4000W power output will allow you to fill your room with sound while reducing distortion and the built-in Bluetooth wireless music streaming will have you jamming out to your favorite tunes. Read Review

3. Best Technology: Skar Audio 18" Subwoofer

Skar Audio 18" subwoofer is built with a high-performance paper cone and high-roll foam surround to deliver tremendous sound pressure levels with minimal distortion. It also features a unique advanced airflow cooling design to ensure long life and durability. Read Review

4. Best Sound Quality: Peavey 18 Inch Subwoofer

The Peavey 18" is a versatile and powerful subwoofer. With its optimized internal low-pass crossover network, it produces a deep, clean, and tight bass performance. It is made of high-quality material with vents on all four sides to dissipate heat generated by the subwoofer. Read Review

Subwoofers are an important part of any home audio system. They help you to create the feeling of being in a live venue or at a concert. They also enhance the bass sound, which is an important component of music. The 18-inch subwoofer is a standard in most car audio systems. There are reasons for that, too: the larger the sub, the more low-frequency content it’ll be able to reproduce. That’s because a larger speaker has more surface area from which to move air and create sound. 

In addition to that, a good subwoofer produces low frequencies at greater volumes than other speakers with similar size and power ratings. These qualities make them such an essential part of any high-quality home audio system or hi-fi system. Subwoofers come in different sizes and shapes. You have the option of getting a single subwoofer or multiple subwoofers for your hi-fi setup. This article will help you understand the best 18-inch subwoofer to buy based on various aspects such as price, brand, the material used, and so on.

After doing extensive study and analysis over a considerable time, We think the loudest 18 inch subwoofer is Harmony Audio 18" Subwoofer. It is a powerful and versatile solution for your home audio system. With 500 watts RMS and 1,000 watts program with an impressive 2000 watts peak, this subwoofer delivers the power and performance you demand from your music system.

Other options presented here are certainly worthy of your attention, and in order to assist you in making an informed choice, We have compiled the PRORECK 18-inch Subwoofer and other products following a helpful buying guide.

Our Top Picks

TOP Choice #1 Harmony Audio 18" Subwoofer
Our Score:
Harmony Audio

Harmony Audio HA-ML182 Monolith 18" Competition SPL Sub 3500W Dual 2 Ohm Subwoofer

TOP Choice #2 PRORECK 18-inch Subwoofer
Our Score:

PRORECK 4000WATT POWERED ARRAY SPEAKER AND SUB SET: Consists of (1) active subwoofer, (4) 6-inch line array speaker, (2) 6-feet tripod stand, (2) 20-feet 6.35mm cable, (2) 20-feet 6.35mm speaker cable, (2) 8-inch 6.35mm speaker cable, (1) 6-feet Power Cable, (1) remote control) and (1) user manual. The active subwoofer features a 18-inch amplifier and streams celar music to the line array speakers, and then deliver music to all audiences.

BLUETOOTH WIRELESS MUSIC STREAMING: Instantly pair with iPhone,iPod, iPad, android devices, etc with line of sight of up to 66 feet. You can also use the remote control to switch mode, play/pause, switch to previous/next song, increase/decrease volume from up to 20 feet; Telescoping tripod stands can adjust the pa system from 65 inch to 89 inch. Use side handles to lift and transport the subwoofers conveniently.

DEEP & THRILLING STEREO SOUND: Rock-solid subwoofer is made of MDF material and reduces resonance for distortion-free and accurate response. Four tweeters and four mid-tweeters ensure clear and deep stereo sound. Note: Items are shipped with two packages separately. Item weight: 86lbs+34lbs; Item size: 27.8x21.7x27.2 inch; 36.6x9.9x21.3 inch

WIDE RANGE OF USAGE:The PA system has 4000 Watt Peak /1000 RMS, and can accommodate up to 500 persons and 1000 m2. Wide frequency response (from 100-20KHz) makes it suitable for amplifying any type of audio including music or vocals. Great for wedding, meeting, speeches, churches, class teaching, gymnastics, conference, home theater, etc. Easily connect to multiple musical instruments.

MULTI-FUNCTIONAL POWERED PA SYSTEM SPEAKER: The powered system set features BLUETOOTH/USB DRIVE/SD CARD functions. Simply insert USB drive/SD CARD to playback songs. It has 3 kinds of line input: Stereo RCA input, 3.5mm AUX input and 6.35mm&XLR combo input; 2-channel Mic input; 2-channel XLR output.

TOP Choice #3 Skar Audio 18" Subwoofer
Our Score:
Skar Audio

18-inch Dual 2 Ohm SPL Car Subwoofer

Massive Triple Stack Magnet & High Temperature 3" 8-layer Copper Voice Coil

Peak Power: 3,200 Watts | RMS Power: 1,600 Watts

Advanced Air Flow Cooling Design | Fs: 26.8 Hz, Xmax: 29mm

Competition Grade Paper Cone and High Roll Foam Surround

4 Peavey 18 Inch Subwoofer
Our Score:

Pro Eighteen 18" premium woofer

Optimized internal low-pass crossover network

Vented bass subwoofer enclosure

5 Sound Town 18” Subwoofer
Our Score:
Sound Town

800W RMS power handling capability

4” voice coil and 2X100-oz dual magnets produce superb sound

18” cast aluminum frame

6 BOSS Audio Systems 18 Inches Subwoofer
Our Score:
BOSS Audio Systems

Warranty: BOSS Audio Systems provides a powerful 3-year Platinum Online Dealer Warranty so long as the purchase is made through We strongly encourage professional installation of this product to ensure proper and safe functionality

Bluetooth - Built-in Bluetooth automatically reconnects to the last device. Stream your music library from your smartphone or MP3 player or use apps such as Spotify and Pandora

Auxiliary Input - Compatible with the audio output of iPods, iPhones, smartphones and MP3 players

Specs & Contents - Dimensions: 18.11” x 3.74” x 4.92”, weight 8.16 lbs. Multi-angle adjustable mounting clamps fits bars from 1.75” to 2”, Cigarette power accessory extension adaptor, wireless remote control

Easy Setup - Bring power to the BRT18A in just seconds by plugging in the cigarette lighter power cord

Amplified - The two 4” speakers and two 1-inch soft dome tweeters are powered by a high-performance built-in class A/B amplifier

USB Ready - The USB port allows you to quickly insert a USB flash drive and access your music library

Weatherproof - The latest weatherproofing techniques have been utilized so that if the weather decides to be anything but sunny, you can keep on riding. The IPX5 rating makes sure of that

7 Rockville 18" Subwoofer
Our Score:

DSP Digital Signal Processor with Boost or Extended Low Frequency Control. Power-On and Signal Input LED Indicators. Signal Input LED Indicator. Clip Limiter Circuitry with LED Indicator.

500 Watts RMS / 1000 Watts Program / 2000 Watts Peak. 18" Woofer with 120oz Magnet and 4” Voice Coil. Frequency Response: 35HZ-2000HZ. Adjustable Crossover Control: 40HZ-500HZ. Maximum SPL @ 1w / 1m: 125dB Peak / 120dB Continuous.

Balanced XLR + TRS input jacks. RCA Input. Balanced XLR thru/output jacks for parallel connections. Passive heat sink with heat sensitive variable speed auto turn-on fan for cooling.

8 Skar Audio 18" Subwoofer
Our Score:
Skar Audio

Sensitivity (SPL): 87.0 dB, Frequency Response: 20 - 300 Hz

Peak Power: 2,500 Watts | RMS Power: 1,250 Watts

Premium Suspension Featuring the EVL Series Signature Red Two Layer Spider

9 Rockville 18" Pro Subwoofers
Our Score:

Fiber Reinforced Ultra Stiff Paper Composite Cone. Paper Composite Dust Cap. Expanded and Rolled Steel Basket. Accordion Cloth Surround. Ultra Saturated, High BL Magnetic Motor Gap. 3" High Temperature CCAW High SPL Voice Coil. Linear Progressive Conex Spiders. Dual Nickel Plated Banana Plug Terminals. Impedance : 8 Ohms. 90 oz Magnet. Mounting Depth: 7.17" inches.

Frequency Response: 26 Hz to 500 Hz. Sensitivity : 101dB @ 1w/1m. REVC: 6.8 Ohm. FO: 31.672 Hz. SD: 1.288 sqCM. BL: 18.769 TM. QMS: 5.826. QES: 0.585. QTS: 0.531. NO: 2.055%. SPLO: 101 dB. VAS: 390.980 Ltr. CMS: 165.907 uM/N. KRM: 9.870 m Ohm. ERM: 0.783. MMS: 152.200 g. MMD: 125.613 g. KXM: 57.704 m Ohm. EXM: 0.652

Power Handling : Peak Power : 2400 Watts (1200 Watts per Subwoofer). RMS Power Handling : 1200 Watts (600 Watts per Subwoofer).

10 Alphasonik 18" Subwoofer
Our Score:

Single 8-Ohm 4" Glass fiber voice coil | mounting dimensions: depth: 209mm/ 8.23" | Through hole: 354mm/ 16.61" | diameter: 460mm/ 18.11"

18" flagship Series subwoofer speaker driver | power Rating: max power: 3000 Watts | RMS power: 1500 Watts

Push down nickel Plated terminals | 125 oz. Magnet | 97dB efficiency | frequency response: 35Hz - 1kHz

Product Images, Product Titles, Product Highlights from Amazon Product Advertising API

What to Look For in a loudest 18 inch subwoofer?

You may have some trouble making a purchase if you don't research it thoroughly. You are expected to invest time and focus on loudest 18 inch subwoofer before investing in them. Usually, it will take you a long time to research a favorite product. But rest assured, we are here to assist you with your loudest 18 inch subwoofer issue, no matter what time of day or night.

Although choosing a product is complicated, it will be more accessible and more available to everyone with today's information technology network. You are now given available sources of information such as famous websites, sale forums, or even customer's feedback. It can be said that information from these sources about loudest 18 inch subwoofer will be beneficial to you.

So now you are expected to focus on needed criteria about loudest 18 inch subwoofer. All of them will come with your investment. 

Subwoofer Box Material

Subwoofer boxes are currently made from plastic or wood. Some high-end models will also use metal. Wood speakers used to be considered superior to plastic speakers at first, though this is not the case anymore. Some well-made speakers are better than those made from rough wood. When choosing speakers, it is important to weigh the components. A large wooden speaker will perform poorly if it is too light.

Sealed Vs Ported Subwoofer

When searching for the best subwoofer guide, this is one of the most crucial questions. There are two types of subwoofers depending on whether or not the interior of the cabinet connects with the exterior. The sealed subwoofer is, like its name, a closed cabinet. Low-frequency output occurs because of the compression within the box. This subwoofer has a simple structure and a better transient response. It also provides clear, crisp hearing. Low-frequency speakers have a lower cutoff frequency than others. You will need to use a bigger cabinet, and a higher-calibre speaker if you wish to achieve a lower frequency of low-frequency diving. The speakers are also more sensitive and efficient than any other type of speaker.
The hole is accessed by the ported subwoofer, which leads the radiation wave through it. The port is generally circular in shape and has one. Some subwoofers can have multiple ports, which allows users to adjust their output energy and enhance the listening experience. A subwoofer port may even have a bar design to allow for greater integration and aesthetics.

Active Vs Passive Subwoofer

There are two types of subwoofers: passive and active. The active subwoofer is currently the most common in home theatres. Subwoofers require a lot power. Many receivers don't have sufficient driving power. Independent passive subwoofers can be found in professional audio more frequently. This is a rare feature in consumer audio. An active subwoofer has a built in power amplifier module. The active subwoofer is currently the most popular home theatre component.

Wired Or Wireless

A rising number of subwoofers powered by Bluetooth are capable of wireless connectivity. Wireless connectivity eliminates the requirement for long cables between subwoofers and receivers.

A wireless subwoofer is usually equipped with a transmitter that plugs into any receiver's subwoofer outputs.
Low-frequency audio signals are transmitted by the transmitter to the wireless subwoofer from the receiver connected to home theater. The wireless receiver integrated into the subwoofer powers the amplifier, which produces the low-frequency sound.

Diaphragm Material

Material refers to what is used in the manufacture of the diaphragm. The tweeter's diaphragm materials are plastic, metal, and silk. There are many diaphragm materials for the woofer, including paper, polyethylene, wool, and aluminum-magnesium alloy cones.
They have different prices and properties. It is difficult to determine who is better or worse. Choose paper or wool pots if you enjoy orchestral music. Polyethylene cones are best for metal music. Paper cones and wool cones shouldn't be used in humid environments. They absorb moisture easily and can change the sound quality.

Maximum SPL

A subwoofer's quality cannot be determined by a single parameter. What makes a subwoofer so capable of producing a sufficient sound pressure level to be considered excellent? Let's first examine the hearing curve of the human ear.
The curve shown in the figure illustrates that different frequencies and sensitivity levels are found within the human ear. Human hearing is identical to this up-and-down curve, which indicates a variable sound pressure level.
The sound of 80dB at 1000Hz is almost identical to 120dB when you listen at 20Hz. This difference amounts to 40dB. The threshold for hearing is 80dB at 20Hz. However, the sound itself is extremely faint and barely audible.
This is why subwoofer parameters must include the maximum sound pressure level. The human ear cannot sense low frequencies and needs to hear a higher sound pressure to feel slight differences. Mix it up if the voice of your subwoofer is too low.

Subwoofer Size & Number

If manufacturers don't want to disclose the maximum sound pressure, most can refer to the third parameter.
The Frequency Response element explains that subwoofers must have sufficient power to produce high frequencies and push air around enough to be heard by the ear. The maximum sound pressure that a subwoofer can achieve is directly related to its size and quantity. The unit's configuration is the best way to determine the subwoofer's strength.

Frequency Response

This is the "dive" index for the subwoofer's low frequency. This parameter indicates how low the subwoofer's output can reach. Subwoofers capable of reaching this frequency can typically be heard by humans at 20 Hz. However, subwoofers with the ability to achieve such low frequencies are more costly.
Don't worry too much about the frequency limit. It is generally acceptable to use a subwoofer at 160-200Hz. Why? Why? Because the frequency above 120Hz is where most of the midrange woofers are. This indicator can't be altered and is established when the subwoofer has been designed, manufactured and shipped to the factory.
If you are able to find a subwoofer that has a dive of around 20Hz for a reasonable price, it is difficult for consumers.
Some entry-level subwoofers with low-end features have a dive of 40Hz or less. The frequency that is too low can cause serious distortion. It is a sign that there are not enough dives. The foundation may not be reliable and all parameters will become meaningless.



What is the loudest 18-inch subwoofer?

The loudest 18-inch subwoofer is the Earthquake Sound Supernova-18. This subwoofer is capable of producing up to 7,000 watts of power and has a peak SPL of 144 dB.

What kind of enclosure is best for an 18-inch subwoofer?

The best enclosure for an 18-inch subwoofer is a ported or vented enclosure. This type of enclosure helps to increase the bass response and provides more power output than a sealed enclosure.

How much power do I need for an 18-inch subwoofer?

The power needed for an 18-inch subwoofer varies depending on the type and size of the subwoofer. Generally, a subwoofer with a power output of up to 1000 watts is sufficient for most applications.

How do I install an 18-inch subwoofer?

Installing an 18-inch subwoofer is a relatively simple process. First, mount the subwoofer in the enclosure and then connect the speaker wire to the subwoofer terminals. Finally, plug the amplifier into an outlet and connect the speaker wire to the amplifier.

What is the sensitivity of the loudest 18-inch subwoofer?

Answer: The MTX Audio Terminator Series TNE212D has a sensitivity rating of 97 dB.

What is the size of the enclosure required for the loudest 18 inch subwoofer?

Answer: The MTX Audio Terminator Series TNE212D requires an enclosure size of 2.6 cubic feet.

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About Dan Simmons

Dan Simmons

Dan Simmons is a writer who loves home theater and HiFi audio. As the editor of TheAudioInsights, he has helped countless people enjoy the best possible sound quality in their homes. He is an audiophile who takes great pleasure in helping others find the perfect audio equipment for their needs. When he's not writing or editing, Dan enjoys listening to music and spending time with his family.