QSC KS118 Active 18″ Subwoofer

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88%
95%
Bass Performance
89%
Portability
92%
Build Quality
88%
Ease of Setup
90%
Durability
93%
Sound Clarity
75%
Weight
87%
Value for Money
85%
Connectivity Options
82%
Customer Support
78%
Size and Dimensions
96%
Power Output
More

Overview

The QSC KS118 Active 18″ Subwoofer is a high-output, professional-grade subwoofer designed to deliver powerful bass in demanding audio environments. Built with a robust 3600W Class D amplifier, this subwoofer is capable of producing impressive low-frequency reproduction. Whether for live performances, mobile setups, or AV production, the QSC KS118 ensures your sound system has the punch it needs. Its durable construction and portability make it an excellent choice for professionals on the move, needing both power and convenience in a compact design.

Features & Benefits

The QSC KS118 offers a range of features that enhance its performance in various settings. Its onboard DSP optimizes sound quality and protects the system, while the selectable DEEP mode extends low-frequency output for an even more dynamic audio experience. The design also prioritizes portability, with convenient handles and four low-noise casters, making it easy to transport between venues. Additionally, the rugged enclosure provides durability, ensuring the subwoofer can withstand the rigors of professional use without compromising sound clarity.

Best For

The QSC KS118 is ideal for venues that demand high-performance sound. It excels in event venues and large live performances, where deep, resonant bass is essential. This subwoofer is also perfect for mobile entertainment setups that require both portability and powerful sound. Its ability to deliver clear, impactful sub-bass makes it a go-to for AV production environments, ensuring that sound professionals can achieve the high-quality audio needed for professional-grade recordings and events.

User Feedback

User feedback on the QSC KS118 is largely positive, with many praising its impressive bass response and clear sound even at high volumes. The portability and ease of setup have also been frequently highlighted as major advantages, especially for mobile DJs and event organizers. However, some users mention that it may be too large for smaller venues or home setups, making it more suitable for medium to large-scale events. While it excels in performance, its size and weight may be a factor to consider for those with limited space.

#Stage Subwoofers
#Monitors, Speakers & Subwoofers
#Live Sound & Stage
#Musical Instruments

Pros

  • This subwoofer provides deep, powerful bass with clear low-frequency reproduction.
  • It’s highly portable, making it suitable for mobile entertainment setups and live events.
  • Setup is straightforward, even for users with minimal technical experience.
  • The 3600W Class D amplifier ensures strong, consistent performance in large venues.
  • Its onboard DSP offers performance optimization and system protection, which enhances reliability.
  • The design is durable and rugged, making it suitable for frequent transport and use in various environments.

Cons

  • Weighing 104 pounds, this subwoofer may be too heavy for some users to carry easily.
  • Its large size makes it impractical for use in smaller venues or home setups.
  • The subwoofer lacks wireless connectivity options, which may be inconvenient for some users.
  • While powerful, the price point might be too high for buyers on a budget.
  • It can be difficult to transport without additional help due to its size and weight.
  • Some users find it too bulky for easy storage in tight spaces.

Ratings

After analyzing verified user reviews from various global platforms and languages, the QSC KS118 Active 18″ Subwoofer has garnered a highly favorable reputation for its performance and build quality. Our AI model filtered out spam, bot-generated, incentivized, or off-topic reviews to provide a clear picture based on authentic, high-quality feedback. Both strengths and pain points have been reflected in the scores, offering a balanced view of the product's real-world performance across multiple use cases.

Bass Performance
95%
Users are particularly impressed by the powerful and deep bass response from this subwoofer. It fills large spaces with rich, clear sound, making it ideal for venues where strong bass is required. The low-end clarity and punch make it a favorite for both live performances and AV production setups.
A few users noted that the subwoofer's deep bass can occasionally overpower other frequencies in certain environments. For smaller venues, the sheer power may be excessive, leading to an uneven sound balance if not properly adjusted.
Portability
89%
The portability of this subwoofer is praised by many users, particularly those who need to move it between different venues. Its robust handles and durable enclosure make it easy to transport without compromising on sound quality. It's a great choice for mobile setups where ease of movement is essential.
However, some users pointed out that despite the portable design, its weight of 104 pounds can still make it challenging to move without assistance. This is especially true for smaller setups where space and manpower are limited.
Build Quality
92%
This subwoofer is built to withstand heavy use, with a solid and durable enclosure that ensures longevity in demanding environments. The quality of materials used is highly regarded, contributing to both its portability and ruggedness. Users appreciate the professional-grade construction, which makes it suitable for continuous use in performance venues.
A few users did mention that the size and design, while durable, can make it a bit bulky in tight spaces. For home use or small venues, the size may feel somewhat impractical, limiting placement options.
Ease of Setup
88%
Many users find the setup process to be relatively straightforward, especially with the inclusion of RCA and XLR connectivity. It's quick to get up and running, even for those with limited technical experience. The included DSP and adjustable crossover settings also make it easier to customize for different environments.
However, some users report that the setup can be a bit more complex in larger, more intricate sound systems, requiring additional time to fine-tune the settings. The absence of a user-friendly app for controlling settings remotely was also mentioned by a few reviewers.
Durability
90%
The overall durability of this subwoofer is highly regarded by users who require reliable performance in various conditions. Whether it's a busy event or an outdoor performance, this subwoofer can handle the stress of frequent transport and rough handling. Its long-lasting construction ensures it will keep performing well for years.
While generally durable, some buyers mentioned that the heavy-duty design could be prone to scratches and wear over time, especially if not properly stored. In environments where the subwoofer is frequently moved, additional care may be needed to prevent cosmetic damage.
Sound Clarity
93%
Users consistently highlight the subwoofer's sound clarity, especially in terms of bass articulation. It excels at delivering deep, clear sub-bass without muddling the mids or highs, making it an excellent choice for professional audio setups. The DSP onboard further helps in maintaining high sound fidelity even at high output levels.
A minor drawback for some users is that the clarity can sometimes be less noticeable in smaller venues with limited acoustics. In such settings, achieving optimal clarity can require more careful placement or additional tweaking of the EQ.
Weight
75%
25%
Despite its weight, many users still consider the subwoofer a worthwhile addition to their setups due to its outstanding sound performance. Those who prioritize sound over weight appreciate its robust output and are willing to deal with the extra heft.
Several users complained about the subwoofer's weight, especially when it comes to transport and handling. At 104 pounds, it's not the easiest to move around without additional help, which could be a concern for those using it in smaller, mobile setups.
Value for Money
87%
Given its powerful output and high-quality build, many users feel this subwoofer offers good value for money. Its performance in live events and AV productions justifies the investment, particularly for those needing a reliable, long-lasting solution. It's a great option for professionals seeking top-tier sound without the exorbitant price tag of some premium brands.
Some users felt that the subwoofer's price was slightly high for smaller venues or home setups, where such a large and powerful speaker may not be fully utilized. For those with limited space or budget, there might be more cost-effective alternatives.
Connectivity Options
85%
The variety of connectivity options, including both RCA and XLR inputs, allows users to integrate this subwoofer easily into a wide range of sound systems. It provides flexibility for professional setups where compatibility with various devices is essential. The omnidirectional audio output ensures consistent sound coverage across the entire space.
However, some users noted that the absence of wireless connectivity or Bluetooth support limits its use in certain modern setups where wireless control is preferred. This lack of additional options might be a deal-breaker for users who value convenience.
Customer Support
82%
18%
The customer support provided by the manufacturer has generally been praised for its responsiveness and helpfulness. Users appreciate the timely assistance with troubleshooting and setup, especially for those using the subwoofer in complex professional environments.
A few buyers have reported slow response times during busy periods or when requesting technical support. While most issues are resolved eventually, some users found the support experience less seamless than expected, particularly for urgent problems.
Size and Dimensions
78%
22%
While the large size of this subwoofer allows for powerful output, users with ample space often find it an asset, providing great coverage in large venues. Those who can accommodate its dimensions appreciate its performance capabilities.
However, the size of this subwoofer can be problematic for those with limited space. It may not fit easily into smaller performance areas or home setups, and users need to plan for substantial storage space if they are not using it constantly.
Power Output
96%
Users rave about the impressive 3600W Class D amplifier, which delivers incredible power for large venues and outdoor events. The sheer volume and punch this subwoofer provides makes it a top choice for live performances, ensuring the bass reaches every corner of the room.
The only downside some users noted is that the high power output can be excessive for smaller environments. In tight spaces, the volume may become overwhelming unless carefully controlled, which could lead to distortion if not properly managed.

Suitable for:

The QSC KS118 Active 18″ Subwoofer is ideal for users who need powerful, reliable bass in large venues or for mobile setups. Event planners and AV professionals who frequently handle live performances or outdoor events will appreciate the subwoofer's robust sound output and portability. Its 3600W Class D amplifier delivers strong, clear bass, making it a go-to choice for high-demand situations where low-end clarity is crucial. Mobile entertainers, DJs, and AV production teams who need a durable, portable solution for large spaces will benefit from this subwoofer's combination of power and ease of transport. Its DSP optimization and easy setup make it suitable for users with varying technical expertise.

Not suitable for:

The QSC KS118 Active 18″ Subwoofer may not be the best choice for those with limited space or smaller venues. Its substantial weight of 104 pounds and large dimensions make it cumbersome for home setups or smaller performance spaces. Those who need a more compact solution may find this subwoofer overly large and impractical. Additionally, users with tighter budgets or those in search of more budget-friendly alternatives may find the cost of this high-output subwoofer to be prohibitive. Individuals seeking wireless connectivity or a highly simplified setup might also find this subwoofer lacking in some modern features like Bluetooth control or app-based adjustments.

Specifications

  • Subwoofer Type: Active subwoofer designed for professional audio applications.
  • Driver Size: Equipped with an 18-inch driver for deep bass response.
  • Amplifier Power: Powered by a 3600W Class D amplifier for high output.
  • Frequency Response: Offers a frequency response range of 41 Hz to 108 Hz for full-range bass.
  • Audio Output: Omnidirectional audio output ensures even bass coverage in all directions.
  • DSP: Onboard Digital Signal Processing (DSP) optimizes performance and protects the system.
  • Crossover: Adjustable crossover allows fine-tuning of the frequency range for better integration with other speakers.
  • Pole Mount: Includes an M20 threaded receptacle for secure pole mounting options.
  • Connectivity: Supports RCA and XLR input connections for versatile integration with various audio setups.
  • Dimensions: Measures 24.5 x 15.5 x 24.25 inches, providing a compact yet powerful subwoofer design.
  • Weight: Weighs 104 pounds, making it durable but requiring two-person handling for transport.
  • Portability: Features a portable design with durable handles for easy transport and setup.
  • DEEP Mode: Selectable DEEP mode enhances low-frequency extension for deeper bass reproduction.
  • Enclosure: Constructed with a durable enclosure to withstand the demands of mobile and live event setups.
  • Application: Ideal for live performances, AV production, and mobile entertainment setups that require robust bass.
  • Mounting Options: Pole mount compatible for flexible placement in performance venues.
  • Protection Features: Includes system protection features via DSP to prevent damage during high-output use.
  • Power Supply: Operates on standard AC power for ease of use in most venues.
  • Use Case: Best suited for professional audio environments like event venues and live performances.

FAQ

The QSC KS118 Active 18″ Subwoofer is designed for powerful bass reproduction, which makes it ideal for live events that require high-output sound. Its 3600W Class D amplifier ensures consistent performance, even in large venues. The onboard DSP optimization further improves sound quality and system protection during intense use.

Setting up this subwoofer is straightforward. Simply connect it using RCA or XLR cables to your audio source, adjust the crossover as needed, and position it in your desired location. The subwoofer has convenient handles for easy transport and setup, making it suitable for both mobile and permanent installations.

The QSC KS118 delivers omnidirectional audio output, meaning the sound disperses evenly in all directions. This helps ensure that the bass reaches the entire area of a performance or event venue.

The QSC KS118 weighs 104 pounds, which is substantial but manageable for a high-output subwoofer of this size. It comes with durable handles for easier transport, but it may require assistance for frequent moving or during setups in large venues.

While the QSC KS118 delivers excellent bass for large venues, its size and power may be too much for small venues or home setups. It is better suited for professional AV production or large event spaces, where its robust performance can be fully utilized.

Yes, the QSC KS118 includes a pole mount with an M20 threaded receptacle. This allows for flexible placement options, such as mounting on a stand for events where higher placement of the subwoofer is required.

The QSC KS118 has a frequency response range of 41 Hz to 108 Hz. This allows it to effectively reproduce deep bass frequencies, which are essential for both music performances and AV production.

The QSC KS118 is built with a durable enclosure that can withstand the rigors of mobile setups. Its design is made to endure frequent transport, while the handles ensure easier handling during setups and breakdowns.

The QSC KS118 is powered by a 3600W Class D amplifier. Class D amplifiers are known for their efficiency and lightweight design, providing high output without excessive heat production, which is ideal for long events and extended use.

One common concern among users is that the QSC KS118 can be too large and heavy for smaller venues or home use. Additionally, while the setup is generally easy, users note that it requires a significant amount of space to operate effectively, especially in smaller rooms.