Need an honest opinion? We're HERE
Schedule a Consultation
📞 1-877-417-9000 ✉️ hello@dreamediaav.com
Dreamedia AV
RBH Sound SI-821/R IN-WALL CABINET Cabinet component of SI-821/R and SI-821C/R in-wall speakers
RBH Sound

RBH Sound SI-821/R IN-WALL CABINET Cabinet component of SI-821/R and SI-821C/R in-wall speakers

RBH Sound

Quantity

Quick answers from real humans

Expert help

877-417-9000 Hannah

Description

RBH Sound SI-821/R In-Wall Cabinet
Engineered for the SI-821/R and SI-821C/R, this durable cabinet enhances clarity, boosts bass, and delivers a clean, professional in-wall fit.

Only Gear We’d Put in Our Own Setups

60-Day Hassle-Free Returns

Real support from real humans in the USA

RBH Sound SI-821/R IN-WALL CABINET Cabinet component of SI-821/R and SI-821C/R in-wall speakers
Need Help Deciding?
Dreamedia Plus

Authorized Dealer

Product Features

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

Description

Unlock the Full Potential of Your RBH SI-821/R Speakers
Your speakers deserve more than just a wall cavity. The RBH SI-821/R In-Wall Cabinet is precision-engineered to give your SI-821/R and SI-821C/R speakers the perfect environment to perform at their best—delivering cleaner highs, tighter mids, and deeper bass.

 

Built to Last, Built for Sound
Crafted from durable, high-quality materials, this cabinet minimizes vibrations and distortion while enhancing overall clarity. It’s the solid foundation your speakers need for long-term, audiophile-grade performance.

 

Seamless Fit, Professional Finish
Designed specifically for in-wall setups, the SI-821/R cabinet makes installation simple and secure, giving your home theater a clean, polished look while containing and optimizing sound for a truly immersive experience.

 

Key Features

  • Custom-fit for RBH SI-821/R and SI-821C/R speakers
  • Reduces vibrations for clearer sound
  • Enhances bass response and projection
  • Durable, high-quality construction
  • Easy, professional in-wall installation

Additional information

Title

Default Title

Reviews

There are no reviews yet.

Be the first to review “RBH Sound SI-821/R IN-WALL CABINET Cabinet component of SI-821/R and SI-821C/R in-wall speakers”

Your email address will not be published.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

Watch It in Action

See All
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.

"Seen Zach on Youtube and loved his enthusiasm for home theater. For years my AV equipment has been housed on an old TV stand looking real "jankey". Seen..."... click to read more
Kelsey Johnson
"Dreamedia is the most knowledgeable in the home theater business. Top notch service and expert..." ... click to read more
★★★★★
Kelsey Johnson
Anthony M
"Amazing experience purchasing equipment from these guys! Excellent prices, quick shipping and overall great customer..." ... click to read more
★★★★★
Anthony M
Heather Kinnamon
"If you are looking for great service, great products, and awesome prices. Look no further...." ... click to read more
★★★★★
Heather Kinnamon
Jay Fluegel
"I can’t say enough about how much and how quickly Zach at Dreamedia helped me..." ... click to read more
★★★★★
Jay Fluegel
Matt Muse
"Great job by David L., helped me a ton and went through every detail of..." ... click to read more
★★★★★
Matt Muse
Jason Pipkin
"Dream media is the best. Great pricing! Excellent job responding to all my questions!"
★★★★★
Jason Pipkin
alan reid-hart
"Had to come back for the rears PRO-16RW"
★★★★★
alan reid-hart
Luke Evans
"Fantastic prices and customer service. I would definitely recommend giving them a call!"
★★★★★
Luke Evans
Joseph Weatherly
"Great experience ordering a Stewart Firehawk G5 screen for my basement theater room from Dreamedia!..." ... click to read more
★★★★★
Joseph Weatherly
adp36
"I left a message for Zach requesting some information about projectors. he called me back..." ... click to read more
★★★★★
adp36
Bram Hechtkopf
"I bought an amp for my subs. The amp arrived quickly and the performance is..." ... click to read more
★★★★★
Bram Hechtkopf
Chat Kumarasinghe
"awesome speakers. delivered as promised. I would recommend these guys."
★★★★★
Chat Kumarasinghe
Kelsey Johnson
"Dreamedia is the most knowledgeable in the home theater business. Top notch service and expert..." ... click to read more
★★★★★
Kelsey Johnson
Anthony M
"Amazing experience purchasing equipment from these guys! Excellent prices, quick shipping and overall great customer..." ... click to read more
★★★★★
Anthony M
Heather Kinnamon
"If you are looking for great service, great products, and awesome prices. Look no further...." ... click to read more
★★★★★
Heather Kinnamon
Jay Fluegel
"I can’t say enough about how much and how quickly Zach at Dreamedia helped me..." ... click to read more
★★★★★
Jay Fluegel
Matt Muse
"Great job by David L., helped me a ton and went through every detail of..." ... click to read more
★★★★★
Matt Muse
Jason Pipkin
"Dream media is the best. Great pricing! Excellent job responding to all my questions!"
★★★★★
Jason Pipkin
alan reid-hart
"Had to come back for the rears PRO-16RW"
★★★★★
alan reid-hart
Luke Evans
"Fantastic prices and customer service. I would definitely recommend giving them a call!"
★★★★★
Luke Evans
Joseph Weatherly
"Great experience ordering a Stewart Firehawk G5 screen for my basement theater room from Dreamedia!..." ... click to read more
★★★★★
Joseph Weatherly
adp36
"I left a message for Zach requesting some information about projectors. he called me back..." ... click to read more
★★★★★
adp36
Bram Hechtkopf
"I bought an amp for my subs. The amp arrived quickly and the performance is..." ... click to read more
★★★★★
Bram Hechtkopf
Chat Kumarasinghe
"awesome speakers. delivered as promised. I would recommend these guys."
★★★★★
Chat Kumarasinghe
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

★★★★★

Excellent Service

"Fast service! Projector was delivered the same day. So far the best home theater..."

Sean Skinner
★★★★★

Excellent Service

"Love the sound, excellent service. Very professional setup."

Immortal Origin
★★★★★

Highly Recommended

"Purchasing equipment for my home theater couldn’t have been any easier! I’ve been watching projector..."

Matt Wells

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.