RTJ 18 Subwoofer - Dreamedia AV
RTJ 18 Subwoofer - Dreamedia AV
RTJ 18 Subwoofer - Dreamedia AV
RTJ 18 Subwoofer - Dreamedia AV
RTJ 18 Subwoofer - Dreamedia AV
RTJ 18 Subwoofer - Dreamedia AV
Vendor: RTJ

RTJ 18 Subwoofer

High-Performance Modular Subwoofer System

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RTJ 18 Subwoofer

Unleashing the Power of Sound with RTJ 18 Subwoofer

Imagine a sound so profound, so deep, that it doesn't just fill the room—it envelops you, taking your home theater experience to unprecedented depths. The RTJ 18 Subwoofer from JTR Speakers, designed by the renowned Jeff Permanian, is the embodiment of this vision. It's not just a subwoofer; it's the heart of a sonic revolution in your living space.

Experience Audiophile Precision Meets Professional Power

Crafted with a meticulous blend of audiophile and professional speaker technology, the RTJ 18 Subwoofer is engineered to deliver smooth sound and intricate detail. This isn't just about hearing the bass; it's about feeling the texture of every low-frequency note, the rumble of every action scene, and the pulse of your favorite music tracks.

  • Smooth Sound: Engineered for audio clarity that brings every detail to life.
  • Incredible Detail: Hear nuances in your audio that you've never noticed before.
  • Limitless Headroom: Ready to handle the most dynamic of soundtracks without breaking a sweat.

Components That Define Excellence

In the world of audio, quality components are the difference between good and exceptional. The RTJ 18 Subwoofer is built with the highest quality components to ensure that it not only meets but exceeds the expectations of the most discerning audiophiles.

Fidelity That Sets a New Standard

The RTJ 18 Subwoofer is designed to deliver the finest fidelity. This means a bass response that's not just loud but accurate, articulate, and true to the original recording. It's about creating an immersive experience that transports you from your home theater to the heart of the action or the center of the concert hall.

Dynamic Range to Move You

Maximize your home theater's dynamic range with a subwoofer that can go from a whisper to a roar without losing its composure. Whether it's the subtle thump of a heartbeat in a tense thriller or the earth-shaking explosion in an action-packed blockbuster, the RTJ 18 Subwoofer handles it with ease.

Aesthetic and Functional Harmony

With a sleek matte black finish, the RTJ 18 Subwoofer not only sounds exceptional but also looks the part. It's a statement piece that complements any dedicated home theater setup.

Seamless Integration with High-End Systems

The RTJ 18 Subwoofer is fully compatible with the StormAudio processor and Cherry Stereo MEGAschino amplifier, ensuring seamless integration into your existing high-end system. For even more power, it can be driven by MONO MEGAschino amps, creating a synergy that elevates your audio experience to new heights.

A Significant Step Up

If you're looking to upgrade from Klipsch speakers or PB3000 subwoofers, the RTJ 18 Subwoofer represents a significant improvement in both performance and quality. Feel the difference a truly premium subwoofer can make in your home theater.

Customizable Configurations for Your Unique Space

The RTJ 18 Subwoofer is orderable in configurations to suit your space, whether it's 2 410s or 4 subs. It's part of the RTJ 410 and RTJ18 Modular Sub/Sat system, offering flexibility and customization for your audio setup.

Performance Highlights

  • Impressive In-Room Extension: With the ability to reach single-digit frequencies, the RTJ 18 Subwoofer offers an in-room extension that's simply breathtaking.
  • Smooth On-Axis Response: Experience a consistent and accurate bass response that brings every scene to life.
  • Well-Controlled Directivity: Enjoy a focused sound field that minimizes room interactions and maximizes performance.
  • Timbre-Matched System: Designed to complement the RTJ 410 system, ensuring a cohesive sound signature throughout your home theater.

Unmatched Output for the Ultimate Home Theater

When it comes to output, the RTJ 18 Subwoofer stands alone. Capable of reaching reference levels without breaking a sweat, it delivers a powerful and clean sound that will satisfy even the most demanding listener.

Pricing That Defies Expectations

Despite its high-end performance, the RTJ 18 Subwoofer is competitively priced within the market. This means you can enjoy premium sound without the premium price tag.

Designed for Optimal Performance

The RTJ 18 Subwoofer is engineered for rectangular rooms, ensuring optimal bass performance in most home theater layouts. It's a subwoofer that adapts to your space, not the other way around.

Key Advantages at a Glance

  • Impressive Low-Frequency Performance: Feel the power of deep, articulate bass.
  • High Output Capability: Engineered for large home theaters that demand the best.
  • Clean and Distortion-Free Sound: Enjoy pure, uncolored audio reproduction.
  • Part of a Cohesive System: Designed to work seamlessly with the RTJ 410 for a harmonious sound.

A Reputation You Can Trust

With a positive reputation within the home theater community and the backing of JTR Speakers’ excellence, the RTJ 18 Subwoofer is a choice you can make with confidence. It represents a legacy of performance and innovation, brought to life by the expertise of Jeff Permanian.

Compatibility for a Unified Audio Experience

When you choose the RTJ 18 Subwoofer, you're not just getting a standalone product; you're investing in a system that's designed to work in harmony with other JTR Audio products. This ensures a unified and immersive audio experience across your entire home theater.

In Summary

The RTJ 18 Subwoofer is more than just a component in your home theater—it's the foundation of a transformative audio journey. With its unmatched fidelity, dynamic range, and seamless integration, it's the choice for those who accept nothing less than the best in their pursuit of the ultimate home theater experience.

Dreamedia is here to help you design a home theater system that perfectly integrates the RTJ 18 Subwoofer, ensuring that you get the most out of this exceptional product. Embrace the power of sound with a subwoofer that redefines what's possible in home theater audio.

RTJ Audio started with the idea of combining audiophile technology with professional speaker technology to create speakers capable of the finest fidelity while delivering maximum dynamics. Careful engineering and highest quality components are employed to achieve smooth sound, incredible detail and seemingly limitless headroom.

Our Review


The RTJ 18 Subwoofer is a key component of the RTJ 410 and RTJ18 Modular Sub/Sat system, designed and engineered by Jeff Permanian. With limited measurements available, this subwoofer has gained a positive reputation within the home theater community for its impressive in-room extension and low-frequency performance. It promises to deliver clean and distortion-free sound with unmatched output capability, making it an intriguing option for large home theaters. In this comprehensive review, we will delve into the design, performance, user experience, pricing, and overall value of the RTJ 18 Subwoofer.

Design and Build Quality

The RTJ 18 Subwoofer features a sleek matte black finish, which adds a touch of sophistication to any home theater setup. However, it is important to note that the subwoofer's large size and weight may limit its visual appeal and hands-on time for some users. Nonetheless, the compatibility with other JTR Audio products allows for seamless integration into existing audio systems, making it a versatile component for audio enthusiasts.

Performance and Sound Quality

One of the standout features of the RTJ 18 Subwoofer is its impressive in-room extension, reaching single-digit frequencies. This capability ensures that users can experience the full depth and impact of low-frequency effects, enhancing the overall cinematic experience. The subwoofer also boasts a smooth on-axis response, contributing to accurate sound reproduction. However, it is worth mentioning that some resonances and directivity issues may be present, which could require digital signal processing (DSP) correction to optimize performance.

In terms of sound quality, the RTJ 18 Subwoofer delivers clean and distortion-free audio, ensuring an immersive listening experience. The subwoofer's well-controlled directivity ensures that the sound is distributed evenly throughout the room, avoiding any localized bass hotspots. This is particularly beneficial for dedicated home theaters where precise and accurate sound reproduction is crucial.

With unmatched output capability, the RTJ 18 Subwoofer is capable of reaching reference levels, making it an excellent choice for large home theaters. The timbre-matched system further enhances the audio experience, ensuring seamless integration with other speakers for a cohesive and balanced soundstage. Additionally, users with older speaker models may find the RTJ 18 Subwoofer to be a significant upgrade opportunity.

User Experience and Practicality

One area of concern is the limited available measurements and data for the RTJ 18 Subwoofer. While the product has earned a positive reputation within the home theater community, it would be beneficial to have more comprehensive information for potential buyers to make an informed decision. Additionally, users should be aware of potential import costs and shipping issues associated with the JTR brand, especially for international customers.

In terms of compatibility, the RTJ 18 Subwoofer can seamlessly integrate into various setups and systems, thanks to its compatibility with other JTR Audio products. The ease of setup and integration with other audio components ensures a hassle-free installation process, allowing users to quickly enjoy the immersive sound experience.

However, it is important to consider the subwoofer's large size and weight, as it may pose challenges in terms of placement and mobility. Users should ensure that they have adequate space and support to accommodate this substantial piece of audio equipment.

Pricing and Value for Money

When comparing the pricing of the RTJ 18 Subwoofer to similar speakers in the market, it becomes evident that it offers competitive pricing. Considering its impressive performance, clean sound reproduction, and compatibility with other JTR Audio products, the subwoofer offers excellent value for money. Users can expect a powerful and immersive audio experience without breaking the bank.


In conclusion, the RTJ 18 Subwoofer from JTR Audio is a powerful and impressive subwoofer that delivers exceptional low-frequency performance. With its in-room extension reaching single-digit frequencies and clean sound reproduction, it is a solid choice for large home theaters. The subwoofer's compatibility with other JTR Audio products, competitive pricing, and positive reputation within the home theater community further enhance its appeal.

While the limited available measurements and potential resonances and directivity issues may be a concern, the overall performance, value for money, and potential for system integration make the RTJ 18 Subwoofer a worthwhile investment for audio enthusiasts. We recommend the RTJ 18 Subwoofer for users seeking a significant upgrade in bass performance and an immersive home theater experience.


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