Delivery & Setup IncludedCosmos Base
4K cinema with built-in sound (indoor or outdoor) — Bluetooth pairing available for your own speaker
Quick Setup Guide
What's in the Box
We deliver and set everything up — Nebula Cosmos 4K SE projector with built-in dual speakers and your 120-inch freestanding screen.
Screen Setup
The freestanding screen is positioned against your longest wall indoors or on flat ground outdoors. No guy lines needed for indoor use.
Power On the Projector
Press and hold the Power button on top of the Nebula Cosmos 4K SE for 2 seconds — the Google TV home screen appears with auto-focus and auto-keystone.
Connect to WiFi
From the Google TV home screen, select the gear icon (top-right) → Network & Internet → choose your WiFi and enter your password.
Open Your Apps
The Cosmos 4K SE runs Google TV — your apps appear on the home screen. Sign into Netflix, Disney+, YouTube, or Prime Video. Need more? Download from the Google Play Store.
Pair Your Own Speaker
The projector has built-in dual speakers. For bigger sound, pair your own Bluetooth speaker via Settings → Remotes & Accessories → Add accessory.
Start Your Movie
Dim the lights and press play. For outdoor setups, wait for full dark after sunset for the best picture.
Quick Troubleshooting Guide
How to pair your own Bluetooth speaker
Go to Settings → Remotes & Accessories → Add accessory on the projector, then put your speaker in pairing mode and select it.
No sound from projector?
Press the volume up button on the remote. The Cosmos 4K SE's built-in speakers may be muted. If you paired a Bluetooth speaker, check it's powered on and connected.
Picture washed out?
Dim the lights or wait for full dark. Projectors need darkness for the best picture.
Blurry?
Nudge the projector — autofocus re-runs automatically. You can also press the Focus button on the remote.
Projector won't turn on?
Press and hold the Power button on the Nebula Cosmos 4K SE for 2 seconds. Make sure the projector is plugged into a standard outlet.
In Your Kit
- Nebula Cosmos 4K SE projector (plugs into any standard outlet)
- 120-inch freestanding screen
- IR remote control
- HDMI cable + power cords
Optional Upgrade: Nebula Mars 3
Your package includes the Nebula Cosmos 4K SE by default. If you upgraded to the battery-powered Nebula Mars 3, it runs up to 5 hours without a wall outlet.
How to turn on
Press and hold the Power button on top of the Nebula Mars 3 for 2 seconds — the Google TV home screen appears with auto-focus and auto-keystone.
Running on battery?
The Mars 3 runs up to 5 hours on a full charge. For longer sessions, plug it into a standard outlet — it charges while in use.
Battery dead?
Plug the Mars 3 into a standard outlet with the provided power cord. It charges while in use — no downtime needed.
Projector won't turn on?
Press and hold the Power button on the Nebula Mars 3 for 2 seconds. If the battery is fully depleted, plug it in — it charges while in use.
Using a Roku stick?
Plug the Roku stick into the HDMI port on the side of the Mars 3. Connect the Roku's USB power cable to the USB port on the Mars 3, or use the included USB power adapter plugged into a wall outlet. Switch the projector's input to HDMI using the Source/Input button on the remote. Follow the on-screen Roku setup to connect to WiFi and sign into your streaming apps.
Roku remote not responding?
Point the Roku remote directly at the stick (not the projector). If it still doesn't respond, unplug the Roku stick for 10 seconds, plug it back in, and wait for the Roku logo to appear. Re-pair the remote by holding the pairing button inside the battery compartment for 3 seconds.
No sound from Roku?
Press the volume up button on the Roku remote. If using external speakers, make sure they're connected via Bluetooth to the Mars 3 or wired to the projector's audio-out jack.
Need help? Text us: (971) 340-6540
Setup and teardown always included. Sign out of streaming accounts before we pack down. Thanks!
VibeBox LLC · Parker, Colorado · Big Sound. Big Screen. Big Moments.