Hello,
We have been using the Tsunami Super WAV Trigger to play audio in a recent exhibit.
It is playing 3 tracks simultaneously and feeding the audio to 3 separate amplifiers - each amplifier is feeding to individual speakers.
If you watch the attached video, you will hear a painful noise coming from the speakers. After speaking with the company that made the amps and speakers they think what is causing this is coming from the mp3 player since multiple speakers were doing it.
This is the equipment:
SPEAKERS: SoundTube Entertainment RS-EZ Series RS82-EZ 8" Coaxial Speaker Open-Ceiling Hanging Speaker
https://www.bhphotovideo.com/c/product/ … _ez_8.html
AMPLIFIERS: SoundTube Entertainment SA502 50W Class D Mini Amplifier with Power Supply
https://www.bhphotovideo.com/c/product/ … s=pi&pim=Y
PLAYER: Tsunami Super WAV Trigger
https://www.sparkfun.com/products/13810
12 gauge speaker wire run between amps and speakers.
Is there anything you can think of that may be causing this?
Video of sound issue, and photos of setup - https://drive.google.com/drive/folders/ … sp=sharing
Need more info to be helpful. You say 3 tracks, but the pictures show 4 sets of audio outs and amplifiers.
I assume from the pictures that you have permanently jumpered the trigger inputs? It looks like there are 5 trigger jumper wires? How many triggers are jumpered?
Has it been working for some time and then failed? If so, how much time do you have on the system working properly? Is the problem on all 3 tracks? When it’s making the noise, what is the Tsunami LED doing? What happens when you press the Tsunami reset button - does it recover?
Yes, 3 tracks. The original plan was 4 but we decided not to use the 4th (which is why there is a 4th audio out).
I permanently jumpered the trigger inputs, yes - 4 of them. It was working fine for about a week, then started having the issue. All 3 tracks/speakers have the sound issue.
I haven’t tested/looked at the Tsunami to see what its doing while the sound is happening. I’ll look into this.
I ran the Tsunami player again until it started making the noise, and the light is solid blue while it was happening, pressing reset stopped the noise and it went back to what it was playing before. 20 seconds later the horrible noise started up again.
My first guess is that something is wrong with either the Tsunami or your microSD card. When you reset the Tsunami, does it always fail at the same point in the tracks? Or another way to ask the same question; does it always fail after the same amount of time following the reset?
If so, then I suggest that you try a new microSD card.
The failure has been unpredictable. Some days it ran for 8 hours without any issues, other days it failed after 10 minutes of running after being turned on.
I will try a new micro SD card
If it doesn’t fail at the same point each time after a reset, then it’s not likely going to be the microSD. What are you powering the Tsunami with? If it’s a USB wall-wart, what is the current output of the power adaptor? The next thing would be to try a different power supply.
It could also be an electrically noisy environment. If anything causes a spike in the supply voltage or ground seen by Tsunami, then this is the sort of thing I’d expect to happen.
If it continues to fail after changing both the microSD card and the power supply, then it could certainly be the Tsunami itself. I know that SparkFun tests them, but it can happen that something fails after that.
As a reference, I’ve run Tsunamis continuously for weeks at a time with no issue, so I’m quite confident it’s not a firmware issue.