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RTJ 18Sub Quad Subwoofer
RTJ 18Sub Quad Subwoofer - Image 2
RTJ

RTJ 18Sub Quad Subwoofer

RTJ

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$19,998.00

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Description

RTJ 18Sub Quad is a four-module subwoofer system built around quad 18-inch drivers for deep, high-output bass with serious headroom. Its modular design keeps placement flexible while delivering clean, controlled low end for large home theater and music systems.

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RTJ 18Sub Quad Subwoofer

$19,998.00

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Description

Four 18s, No Holding Back

If you want bass that doesn’t tap out when things get serious, the RTJ 18Sub Quad is built for that job. Four 18-inch sub modules work together to deliver deep pressure with real headroom. Big scenes hit harder, low notes stay solid, and the system doesn’t sound stressed when you turn it up.

Power That Stays Tight

Running four drivers means each one works less to do more. The result is bass that stays controlled instead of smeared, even at higher levels. You get weight and impact without the loose feel that shows up when a single sub is pushed past its comfort zone.

Modular and Easy to Place

Each module keeps a compact footprint, so placement stays flexible. Stack them, hide them behind an acoustically transparent screen, or build them into a baffle wall. Start with the quad and stop there—or expand later if the room demands more. This setup scales without drama.

Key Features

  • Quad 18-inch subwoofer modules

  • Massive headroom with controlled output

  • Deep low-frequency performance in real rooms

  • Compact modules for flexible placement

  • Designed for baffle wall or behind-screen installs

  • Cleaner bass at high volume

  • Built for large home theater systems

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Four Drivers That Don’t Quit

The quad 18″ setup gives you output and room pressurization that’s hard to beat at this level. Bass hits with authority without sounding muddy or uncontrolled — it stays solid, even when you push it.

Deep Reach Where It Matters

Because the system is tuned for low-frequency output down into the single digits, it brings out effects and notes that smaller or shallower sub setups just don’t produce. You actually feel the impact rather than guess it.

Practical Modules That Work as a Team

Each 18″ module keeps the footprint manageable so you can place these subs where they fit. As a group, they work well for larger rooms or private theaters where deep, powerful bass is a must but you don’t want giant boxes everywhere.

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R S
NYCLJ34
"Anytime I need anything Zack is always available to help. Dreamedia has great prices..." ... click to read more
★★★★★
NYCLJ34
Alan Moses
"Zach & the Dreamedia crew were awesome. they will get you the best equipment..." ... click to read more
★★★★★
Alan Moses
Luke Evans
"Fantastic prices and customer service. I would definitely recommend giving them a call!"
★★★★★
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John Lill
"Zak and his team at Dreamedia are absolute pros! From the very start, they were..." ... click to read more
★★★★★
John Lill
Michael Kamm
"I am very happy with the services that I received from Dreamedia. These guys..." ... click to read more
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Michael Kamm
Marlon Simon
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Marlon Simon
Ronald Costello
"Zach from Dreammedia was very prompt in communication and having product delivered. Great job!!"
★★★★★
Ronald Costello
BJ Broderick
"Dreamedia is as good as it gets. Zach, Kellen and the entire team truly go..." ... click to read more
★★★★★
BJ Broderick
alan reid-hart
""Best in class customer service, price, & selection A-1" Go ahead and purchase stop looking!!!..." ... click to read more
★★★★★
alan reid-hart
Matthew Dubs
"One of the best interactions I have ever had with a company. I reached..." ... click to read more
★★★★★
Matthew Dubs
Mike H
"Answered and recommended Focal in wall speakers for my media room setup."
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R S
"Amazing company! Amazing prices! They by far have the lowest price and they also have..." ... click to read more
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R S
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R S

FAQ

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How long are the lead times on orders?

Lead times generally take 3-5 days to ship and arrive. However, there are several items that may have unique ordering and freight conditions that vary.

Do you offer in-depth consultations?

Yes! You can schedule a free consultation under our Contact page.

Do you offer bundles?

We have bundles that can be a one size fits most. However, we would prefer to schedule a consult to talk through your exact project. Determining what is best for your space, timeline and budget.

Can you install my system?

Depending on location, there is a good chance one of our preferred partners can do the installation. We have over 20+ installers in our network across the country.