Support → Audio 50
Audio 50 — Setup & Wiring
Power wiring, speaker connection, SD card audio setup, trigger inputs, and Home Assistant integration for the NeatoFX Audio 50 WiFi speaker.
Connector Overview
| Connector | Spec | Typical Use |
|---|---|---|
| POWER IN | 12V DC | Standard 12V venue supply |
| SPEAKER OUT | 50W (TPA3116D2 amp), 4–8Ω | Kenwood KFC-1666S 6.5" (included) or any 4–8Ω speaker |
| WIRED IN (×2) | Digital, debounced, 3.3V logic | Button, target hit signal, external trigger |
| RF IN (A/B/C/D) | 4-channel RF receiver (optional add-on) | Wireless remote trigger — contact us to add |
| RELAY (×2) | 15A @ 12VDC · 15A @ 250VAC, SPDT each | Prop, solenoid, light — fires with or after audio |
| SPOTLIGHT (×2) | FET, dimmable 12V output, 4.2A continuous | 12V LED spotlight — dims smoothly on trigger |
| SD CARD SLOT | MicroSD, FAT32, up to 32GB | Up to 255 MP3 audio files |
Connector Reference
Know your connectors before you wire
Hover or tap any dot to see the connector label, function, and wiring notes.
Tap any dot to see connector details
Power & Speaker
Wiring power and the speaker
The Audio 50 is a complete self-contained unit. Unlike off-the-shelf speakers, there is no external amplifier required — the amp, WiFi controller, audio player, relay outputs, and spotlight control are all inside the same enclosure. Just connect 12V and a speaker. That's it.
Automatic battery backup. Connect a 12V battery alongside the DC power supply and the Audio 50 will automatically switch over if power is lost — no interruption to operation. When venue power returns, it switches back. Useful for outdoor installs or any location where power reliability is a concern.
WiFi Setup
Connecting to your network
Gallery Kit customers: the Audio 50 comes pre-connected to the included router — skip this section. These steps apply if you're adding an Audio 50 to your own existing network.
Power on the Audio 50
Connect 12V power. If not previously configured, the unit broadcasts a WiFi hotspot named audio-XX — the exact name is on the label on the back of the unit.
Connect your phone to the hotspot
Open WiFi settings on your phone and connect to the Audio 50's hotspot. Your browser will auto-open the setup portal (or navigate to 192.168.4.1).
Enter your venue WiFi credentials
Select your venue WiFi network from the list and enter the password. The Audio 50 reboots and joins your network. Home Assistant discovers it within about 60 seconds.
Access the Audio 50 by name
Once connected to your network, the Audio 50 is reachable by its local hostname — printed on the label on the back of the unit (e.g. audio-1.local). Open it in any browser on the same network to configure audio settings.
SD Card Audio
Loading audio files
SD card requirements
- › MicroSD card, up to 32GB
- › Format as FAT32 (not exFAT)
- › MP3 files only (128kbps or higher recommended)
- › Create a folder named mp3 in the root of the card — all audio files go inside it
- › Up to 3,000 files supported
File naming convention
Files must start with a 4-digit number. You can add a descriptive name after the number to keep things organized.
0001-zombie.mp3 → track 1
Triggered by input 1 or HA service call
0002-air_horn.mp3 → track 2
Triggered by input 2 or RF channel B
0010-ambient.mp3 → background loop
Any track can be set as the background loop — configured in the browser interface
Connection Wizard
What do you want to wire?
Select a scenario to see the wiring diagram, which connector to use, and how to configure it in the browser interface.
Trigger Inputs
How to trigger audio playback
Home Assistant
Trigger any track by number from an HA automation. When a Target IR registers a hit, HA tells the Audio 50 to play track 1. Fully automated, zero wiring between units — this means any target can trigger a sound wirelessly.
Wired Digital Input
Wire a button or relay output from any device to the Audio 50's wired input (3.3V logic, debounced). Each input maps to a specific track or random playback mode.
RF Remote (optional add-on)
A 4-channel RF receiver can be added to the Audio 50 if needed. A/B/C/D each trigger a different track or function — useful for wireless manual control anywhere in the venue without Home Assistant. Contact us to add this option.
Background Loop Mode
Enable loop mode in the browser interface — track 0000.mp3 plays continuously in the background. Events interrupt the loop, then it resumes automatically.
Relay & Spotlight
Triggering props and spotlights
The Audio 50 has two 15A relays (AC/DC rated) and two dimmable FET spotlight outputs. They fire with audio playback — or independently via Home Assistant.
Relay outputs (×2)
- › 15A @ 12VDC · 15A @ 250VAC — heavier loads than the Target IR relay
- › SPDT: COM / NO / NC
- › Can fire at start of audio, end of audio, or after a delay
- › Wire same as Target IR relay (COM=supply+, NO=load+)
Spotlight outputs (×2)
- › FET, dimmable PWM output for 12V LED spotlights — 4.2A continuous rated
- › Connect spotlight + to 12V supply, spotlight − to FET output
- › Dim level configurable (0–100%) via browser or HA
- › Sync to audio: full brightness on hit, fade out when audio ends
- › Or run independently as always-on with adjustable dim
Configuration
Browser & Home Assistant configuration
Browser interface
Open the speaker's local hostname from any browser on the same network. The hostname is printed on the label on the back of the unit (e.g. audio-1.local):
- › Set volume (0–30, remembered across power cycles)
- › Enable/disable background loop
- › Assign a track number to each input trigger (Input 1, Input 2, RF A–D)
- › Enable random playback per input — plays a random track from the pool instead of a fixed one
- › Assign which output fires on each trigger (Relay 1, Relay 2, FET 1, or FET 2)
- › Set spotlight dim level
Home Assistant entities
After auto-discovery in HA, each speaker exposes:
- › Service: Play track — call with track number
- › Service: Stop — halt playback immediately
- › Number: Volume — slider 0–30
- › Switch: Loop mode
- › Switch: Relay 1/2
- › Number: Spotlight 1/2 dim
Questions about your Audio 50?
We're the manufacturer. We know every corner of this hardware.