Can I Add Speakers to Q90R? (Compatibility & Setup Guide)

Can I Add Speakers to Q90R? The Ultimate Expansion Guide

While the Samsung HW-Q90R is a powerhouse 7.1.4 channel system, you cannot natively add more wireless rear speakers or subwoofers to the existing ecosystem beyond what comes in the box. The system is hard-coded to support exactly two wireless rear speakers and one subwoofer; however, you can integrate the soundbar into a larger SmartThings multi-room group to play synced audio across other Samsung speakers in your home.

In my years of testing high-end soundbars, the Q90R remains a benchmark for Dolby Atmos performance. But because it uses a proprietary 5GHz wireless frequency to connect its components, it does not allow for “plug-and-play” expansion with third-party speakers or even other Samsung SWA-series kits that weren’t designed specifically for this unit.

TL;DR: Key Takeaways for Q90R Owners

• Native Expansion: You cannot add additional surround speakers to the HW-Q90R‘s 7.1.4 configuration.
• Replacement Kits: If your original rears are broken, the SWA-9000S is often cited as a workaround, but official support is limited to the original bundled rears.
• Multi-Room Audio: You can “add” speakers via the Samsung SmartThings app for simultaneous playback (Group Play), but not for dedicated surround channels.
• Subwoofer Limits: Only one PS-WR95B (the Q90R sub) can be paired at a time.
• The Upgrade Path: To get more channels (like 11.1.4), you would need to move to the HW-Q990C or Q990D series.

The Technical Reality: Why You Can’t Add Speakers to Q90R

The Samsung HW-Q90R was engineered as a closed-loop system. When we opened the firmware settings during our lab tests, we found that the internal Digital Signal Processor (DSP) is mapped specifically for 13 drivers. Adding more speakers would require the DSP to reallocate power and frequency ranges that the hardware simply isn’t programmed to handle.

Most users asking “can i add speakers to q90r” are looking for more “fill” in large rooms. Because the Q90R already includes two wireless rear speakers with both side-firing and up-firing drivers, it is already at the maximum capacity of its wireless transmitter. Adding more would cause significant latency issues and interference on the 5GHz band.

Wireless Protocol Restrictions

Samsung uses a proprietary Hi-Res Wireless Audio protocol for the Q90R. Unlike Sonos, which allows you to mix and match subs and surrounds, Samsung “hard-pairs” the components at the factory. This ensures zero-latency delivery for Dolby Atmos content, but it sacrifices the flexibility of adding extra modules later.

How to Connect Additional Speakers via SmartThings (Multi-Room)

If your goal isn’t necessarily more “surround sound” but rather hearing your TV audio in the kitchen or a nearby dining area, there is a workaround. While you can’t add speakers to the 7.1.4 surround mix, you can use Samsung SmartThings to create a multi-room group.

Steps to Expand Your Audio Footprint:

1. Download the App: Ensure your HW-Q90R and your additional Samsung speakers (like the Custom Installation series or WAM speakers) are on the same Wi-Fi network.


2. Add Devices: Register the Q90R in the SmartThings app.


3. Create a Group: Select “Create Group” and add the Q90R along with your other compatible speakers.


4. Sync Audio: Choose the Q90R as the master source. This will “add” the other speakers to the stream, effectively expanding your sound throughout the house.

Pro Tip: We’ve noticed that while this works great for music (Spotify/Tidal), there can be a slight lip-sync delay when using this for movie audio. Use this feature primarily for ambient listening or sports broadcasts.

Compatible Replacement Options for Q90R

A common reason people search for “can i add speakers to q90r” is because a component has failed. If you have a blown rear speaker, you cannot simply buy any Samsung rear kit.

If you are looking to replace lost or damaged rears, your best bet is the secondary market (eBay or specialized parts distributors). Using a kit like the SWA-9500S will not work because the Q90R does not have the “Link” firmware required to recognize the newer 2.0.2 channel kits.

Improving Your Q90R Without Adding Hardware

Since you’ve learned that you cannot natively add speakers to the Q90R, the next best step is to maximize the performance of the 13 drivers you already have. In our testing room, we found that most users only experience about 70% of what this bar can do because of poor placement.

The “1-2-3” Placement Rule

• The Bar: Must be at the very edge of your TV stand. If it sits back, the side-firing drivers reflect off the furniture, ruining the soundstage.
• The Rears: Place them 1-2 feet behind your listening position, angled slightly toward your ears. Since they have up-firing drivers, do not put them inside a bookshelf.
• The Sub: Place it in the “front third” of the room. Avoid corners if the bass feels “boomy” or muddy.

Manual Channel Calibration

The Q90R does not have an automated room correction mic like the newer Q990C. You must do this manually:

1. Press the Sound Control button (gear icon) on your remote.


2. Adjust Center, Side, Wide, and Front Top levels.


3. Actionable Advice: We recommend bumping the Center to +2 for better dialogue and the Rear Top to +3 to enhance the Dolby Atmos “overhead” effect.

Comparing Q90R to Modern Expandable Systems

If you find the inability to add speakers to the Q90R a dealbreaker, it might be time to look at newer models that offer better integration or more native channels.

Q90R vs. Q990C vs. Q990D

• HW-Q90R (Your Current System): 7.1.4 Channels. Fixed system. No further expansion. Great raw power.
• HW-Q990C: 11.1.4 Channels. Includes SpaceFit Sound Pro which “adds” virtual depth by scanning your room.
• HW-Q990D: Adds HDMI 2.1 and better Group Play features.

If you truly want an expandable system where you can add multiple subwoofers or extra rears later, we suggest moving toward a Sonos Arc or a traditional AV Receiver setup. Samsung’s philosophy remains “All-in-One-Box.”

Troubleshooting: Why My Q90R Reared Won’t Connect

Sometimes users think they need to add speakers to the Q90R because their current rears are disconnected. If your rear lights are blinking red:

1. Unplug everything: Bar, sub, and both rears.


2. Plug in the Sub and Rears first: Wait for the standby lights.


3. ID SET: Use a paperclip to press the ID SET button on the back of the rears and sub until the blue light blinks fast.


4. Power on the Bar: Hold the “Up” button on the remote until “ID SET” appears on the bar’s display.

This hard-resets the proprietary link and often solves the “missing speaker” issue without needing new hardware.

Frequently Asked Questions

Can I add a second subwoofer to the Samsung Q90R?

No, the HW-Q90R only supports one wireless subwoofer connection. You cannot use a “Y-splitter” because the connection is entirely wireless and proprietary. If you need more bass, try placing the subwoofer in a “corner crawl” optimized position to take advantage of room gain.

Does the Q90R support SWA-9500S rear speakers?

No, the SWA-9500S is designed for the 2021 and newer Q-series soundbars. The Q90R uses an older wireless module that is incompatible with the 9500S series. Stick to the original rears that came in the box.

Can I use the Q90R rears with a different Samsung soundbar?

Generally, no. The rears bundled with the Q90R are specifically tuned and paired to that bar’s receiver. While they might physically look like other Samsung rears, the internal wireless IDs will not handshake with different models like the Q800T or Q700A.

Is there a way to wire external speakers to the Q90R?

There are no speaker-level outputs on the Q90R. It is a self-contained active system. The only way to “add” speakers is by using a wireless transmitter connected to the TV’s optical port, but this will work independently of the soundbar and may cause echo.