Have a question that’s not on the list? Contact us at [email protected]
and we can answer any additional questions you may have.


How many beam options does Ceiling have?

Ceiling has three adjustable beam options (narrow, medium, and wide). The narrow setting will also give you the option for audio fencing (coming soon)!

How do you change beam settings?

You can adjust a Ceiling devices beam setting on the ecosystem platform by selecting the specific device and clicking the beam settings at the bottom. Please visit page 13 of the Stem Audio platform user manual.

What is the recommended maximum distance from the Ceiling to the table?

For all distance coverage questions, we recommend utilizing our RoomDesign tool. When designing your room, Ceiling coverage is estimated based on a standard 9’ ceiling. Actual microphone pickup coverage and quality will always vary depending on the acoustical treatment of any room.

Is there anything I can do to improve the performance of Stem devices in my room?

Yes, our RoomAdapt tool allows you to instantly optimize every Stem device in the room at the press of a button. When you initiate RoomAdapt, each device in the room will play a chirping sound. While chirping, the devices are analyzing the acoustics, audio pickup, and reverberance from different parts of the room. That information is used to adapt and adjust each individual device to work optimally in reference to the particular placement of each device in the room. If you want a deeper dive into RoomAdapt check out our blog on [How To] Instantly Tune Your Conference Room Audio.

Is the Stem ecosystem compatible with Dante Domain Manager?

Yes, Stem Hub has a connectivity option to integrate with Dante. Hub is the only Dante enabled device in the ecosystem and provides a single out channel for the entire room.

How well do the devices handle ambient user noise?

Most people describe their experience with Stem as, “just like being in the room.” If you want to hear it for yourself, you can listen to a demo here.

Which device controls and processes the audio signals when there are multiple devices in a room?

When there are multiple Stem devices in a room, Hub will control and process all the audio signals coming from each device in the room. The Hub replaces the computer’s speaker and mic.

Do the devices have LED lights indicating power, mute, etc? Can they be modified or turned off?

Yes, yes, and yes! You can turn off a device’s directional lights through the device or room settings on the ecosystem platform. Instructions on how to disable directional lights can be found on page 7 of the Stem Audio platform user manual.

Do Stem devices have AEC built-in?

Yes, all Stem devices with the exception of Control have a built in DSP which allows the devices to perform AEC, AGC, Noise Cancelling, and De-Reverberation.

When do you need Control?

Control is an optional support device which will be used whenever you want to add a dedicated meeting control device in the room. Control has full access to the ecosystem platform, giving you the ability to set-up, monitor, and manage your rooms and devices. Control also has video conferencing functionality so you can leave it in the room for users to conduct push-to-start meetings. Control is Zoom Rooms compatible.

How can you set-up a combination of different Stem devices in a room?

Our devices allow you to mix and match them into any room for customized coverage. When you are installing your combination of Stem devices in a room, you will plug them in, find them on the network through the ecosystem platform, and assign them to a room so they all know to work together as one ecosystem in that room. You can always reference our blog on [How To] Setup Your First Stem Room in Minutes to learn more.

Is the Stem platform only available on the Stem Control?

Stem’s ecosystem platform is also available as an app available on iOS, Android and via HTML.

Do the devices support audio output or do I need to install speakers?

If you are using a Stem Table and Wall (both have built-in speakers) you won’t need to install additional external speakers. However, if you only want to install Ceiling devices in the room, you will need to connect external speakers to the Hub in the room for sound.

Is there a limit to the number of devices that can be used with one hub?

Yes, Hub can be used with up to ten (10) audio devices and unlimited Controls for both SIP and Video Conferencing.

What is the latest firmware version for Stem devices?

The latest firmware version is
For firmware files please Contact Us.


Can I mount the Wall in a vertical position?

No, the Wall unit was designed to be mounted horizontally. Most of our customers mount the Wall below their display unit at the head of the room.

Is mounting of Ceiling supported?

Yes! Ceiling can be either low profile mounted OR suspended from the ceiling in chandelier mode.

Does Table have a mounting plate option to secure it to the table?

No, there is no additional plate option but all Stem devices are equipped with a Kensington lock to secure them to their installed location.

What is the recommended mounting height for Wall?

The optimal height for mounting Wall is at mouth-level of meeting participants in the room. This will depend on chair height and if the majority of participants will be standing or sitting.

What keeps Ceiling hanging level to the floor when it’s suspended from the ceiling? Can it be dusted?

Ceiling is connected by a suspension wire that screws directly into the center of the device. Our engineers have designed Ceiling to evenly distribute the weight of the device so that it stays level when suspended in chandelier mode. Yes, Ceiling and all other devices can be dusted with a dry cloth or duster.


Can Stem devices be daisy-chained?

No, Stem devices can not be daisy-chained. It’s better than that! They are networkable and will work together through the Hub.

Are Stem devices USB 2.0 or 3.0?

Stem Devices are USB 2.0 and will work with USB 3.0.

How do you update firmware on the devices?

When an update is available, we will send out the update to all devices. The devices will then search the network for any available updates and automatically update themselves at a time when they are not currently in use.

If your network gets disconnected will you also lose audio in the room?

Since the devices are connected to your network (just like your video conferencing), if your network disconnects then yes, you will lose audio in the room. Once your network connection is re-established the devices will automatically find the network and reconnect.

Can I connect a Ceiling device directly to a computer using the USB connection?

You can absolutely connect directly to the computer via USB. However, we highly recommend that you pair a Ceiling to a Hub. This will eliminate the need to run a long USB cable from your ceiling to your computer.

Do your devices support static IP assignment?

Yes, in the advanced settings of each individual Stem device you will find a field to add a static IP address.

Are the devices MAC addresses visible on the device itself prior to powering the unit up for network reservations?

Yes, the MAC address is visible on the bottom or back side of each device.

I noticed that the Stem Wall, Table and Ceiling have an Ethernet port and USB. What is the USB connector for?

Table’s USB connectivity option is to connect directly to your PC if you want to use it as a standalone device for video conferencing. All Stem devices have PoE+ connectivity for power and data in addition to an optional USB connection if you want to use a device for standalone video conferencing.

How do I update my devices if I am not connected to the internet?

You will have the option to manually update your devices, you will find the latest firmware files on the Stem Audio website.

What security measures are taken on a network and device level?

When plugging in your first Stem device, you will be prompted to choose a security setting by either setting up a password-protected organization or default settings. If you create an organization, only devices within your password-protected organization can communicate and control one another. To protect your privacy Stem devices come with encryption security measures.

How do I connect external speakers?

The Hub comes with non-amplified analog out connection. Therefore, if you have existing external speakers you can connect the speaker amplifier directly to the Hub. The Hub comes with the terminal block adapter — the adapter provides two negative, two positive and one ground terminal.

Is PoE or PoE+ required?

A network that supports PoE+, a PoE+ injector, or a PoE+ enabled switch will be needed to support Stem devices with power, data, IoT, and SIP capabilities.

Do you recommend a specific switch?

Make sure you refrain from using a switch with EEE capabilities, also known as Green Ethernet and IEEE802.3az switch, unless this feature can be disabled in a managed switch. Many EEE switches do not perform the negotiation properly and can result in poor synchronization and dropouts.


Can Stem devices connect to phone systems for SIP conferencing? How do you dial?

Absolutely. You can SIP-enable an individual device or a room via the Hub as long as your SIP provider allows basic 3rd party SIP devices. You can dial SIP calls directly on Control or the ecosystem platform which is available in the app store for Android, iOS, and via HTML.

Can the speakers be used in other capacities beyond conferencing?

Of course! The speakers in each device will play whatever you want them to based on what your Hub is connected to. Feel free to play your favorite song on your computer using the streaming platform of your choice.