RTJ 18Sub Quad Subwoofer - Dreamedia AV
Need an honest opinion? We're HERE
Schedule a Consultation
📞 1-877-417-9000 ✉️ hello@dreamediaav.com
Dreamedia AV
RTJ 18Sub Quad Subwoofer
RTJ 18Sub Quad Subwoofer - Image 2
RTJ

RTJ 18Sub Quad Subwoofer

RTJ

Quantity

Price

$19,998.00

Quick answers from real humans

Expert help

877-417-9000 Hannah

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.

Only Gear We’d Put in Our Own Setups

60-Day Hassle-Free Returns

Real support from real humans in the USA

RTJ 18Sub Quad Subwoofer

$19,998.00

Need Help Deciding?

Authorized Dealer

Product Features

Free Shipping Nationwide
No Hassle 30 Days Return
Price Assurance
Dream Team
Preferred Installers

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

Reviews

There are no reviews yet.

Be the first to review “RTJ 18Sub Quad Subwoofer”

Your email address will not be published. Required fields are marked *

  • 4x 18” Sub Module

  • 1x External Amplifier - 2x Inputs (2x 4000w Internal Amplification)

  • 10hz-200hz (In Room)

  • 20 amp @ 120 volt (1/4 Power)

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.

Error: No items found matching your criteria. No items found in the specified categories/tags.
Recommended Gear

Complete Your Setup

Curated products to complete your setup.

Customer Support Module

Free Shipping on Most Orders

60-Day Hassle-Free Returns

Expert Support via Text or Chat — Anytime

Pro Audio Gear Curated by Home Theater Specialists

Book a Consultation

Fast and Simple

30K+

Happy Customers

100% Expert-Curated Gear

We hand-pick every product based on real-world performance — no guesswork, no filler.

We design, build, and use home theaters ourselves.

We’re not just a store — we’re fans, builders, and listeners too.

"Great experience ordering a Stewart Firehawk G5 screen for my basement theater room from Dreamedia! Kellen helped me out on the order. He was very helpful in answering questions, making..."... click to read more
Bretnea Harvey
"Kellen is trustworthy and I have no doubt this is the best stop for your..." ... click to read more
★★★★★
Bretnea Harvey
Corbin Jewell
"Dremedia is the way to go! Awesome customer service and a pleasure working with Kellen...."
★★★★★
Corbin Jewell
David Darnall
"I was in the market for a new projector and after doing my research I..." ... click to read more
★★★★★
David Darnall
Jose Rosado
"Doing business with Dreamedia began with a few hiccups along the way due to shipping..." ... click to read more
★★★★★
Jose Rosado
Jason Doty
"Zach and Grayson went above and beyond on our large project. They were very..." ... click to read more
★★★★★
Jason Doty
Don Nelson
"Absolutely the best customer service I've had in quite some time! I was shopping..." ... click to read more
★★★★★
Don Nelson
Derek
"Zach is very Knowledgeable in home theater. I asked a question in his email and..." ... click to read more
★★★★★
Derek
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
Sari Alamuddin
"Excellent client service. Chace is always willing to swing by on the drop of..." ... click to read more
★★★★★
Sari Alamuddin
Lucas Henry
"Can’t go wrong with Dreamedia!"
★★★★★
Lucas Henry
L Phillips
"I recently bought a Epson projector and Dragonfly screen from Zach at Dreamedia and cannot..." ... click to read more
★★★★★
L Phillips
Tina Xiang
"Kellen and the whole team were wonderful！Professional knowledge and skills, best price, great customer service！I" ... click to read more
★★★★★
Tina Xiang
Bretnea Harvey
"Kellen is trustworthy and I have no doubt this is the best stop for your..." ... click to read more
★★★★★
Bretnea Harvey
Corbin Jewell
"Dremedia is the way to go! Awesome customer service and a pleasure working with Kellen...."
★★★★★
Corbin Jewell
David Darnall
"I was in the market for a new projector and after doing my research I..." ... click to read more
★★★★★
David Darnall
Jose Rosado
"Doing business with Dreamedia began with a few hiccups along the way due to shipping..." ... click to read more
★★★★★
Jose Rosado
Jason Doty
"Zach and Grayson went above and beyond on our large project. They were very..." ... click to read more
★★★★★
Jason Doty
Don Nelson
"Absolutely the best customer service I've had in quite some time! I was shopping..." ... click to read more
★★★★★
Don Nelson
Derek
"Zach is very Knowledgeable in home theater. I asked a question in his email and..." ... click to read more
★★★★★
Derek
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
Sari Alamuddin
"Excellent client service. Chace is always willing to swing by on the drop of..." ... click to read more
★★★★★
Sari Alamuddin
Lucas Henry
"Can’t go wrong with Dreamedia!"
★★★★★
Lucas Henry
L Phillips
"I recently bought a Epson projector and Dragonfly screen from Zach at Dreamedia and cannot..." ... click to read more
★★★★★
L Phillips
Tina Xiang
"Kellen and the whole team were wonderful！Professional knowledge and skills, best price, great customer service！I" ... click to read more
★★★★★
Tina Xiang
Why Choose Us?

Why Thousands Trust Dreamedia

Trusted by thousands for our service and expertise

Reviews

30M+ VIEWS ON YOUTUBE

Most of our customers discover us through our videos — and stay for the experience.

15+ YEARS OF INDUSTRY EXPERTISE

Helping families and businesses build the perfect home theater since day one.

NATIONWIDE INSTALLATIONS & PERSONAL SUPORT

From coast to coast — with real humans, not scripts.

4.9/5 CUSTOMER RATING

We’re proud of the trust we’ve earned. Just check the reviews.

Reviews

Reviews

Excellent

Reviews

★★★★★

Highly Recommended

"Dreammedia gets the job done! 100% recommend!!"

Parker Culbertson
★★★★★

Fast & Excellent

"Fast Quote with a great design."

Bryan Kinnnamon
★★★★★

Extremely Helpful

"Zachary was very helpful for my theater purchase. He beat the price of a local..."

Spencer

FAQ

Have more questions?
Reach out any time

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.