Worked surprisingly well for each individual speaker. Not 100% accurate but most of the time it is. Helped me to find out that 1 of my 4 hi-fi subwoofers were inverted phase despite of the phase switch set to 0°. So I had to donate this guy.
Simple effective tools. Unfortunately, doesn't work well with xiaomi Redmi note 3 plugged with aux cable to stereo unit. Mic does not pick up tone... Gotta use a second phone to do the reading while the first to generate tone.
Snapped a speaker cable in my surround sound system. There was no indication of which wire was positive or negative on the wires themselves or going into the speaker. This app was great as it allowed me to make sure the speaker had the same polarity as all the others when I rewired it.
really easy with two devices. Tablet to generate the tone with headphone-to-rca cable, phone to sit next to the speaker. While i knew i was "phased-out" as it just didnt sound right, this app help me find that one of the 4 speakers was reversed. It didnt seem to work with subwoofer even with the 80hz test, but it did exactly what i needed on the full range speakers. It did mis-report every so often (background noise?), but with a vast majority coming back as either red or green it's easy to see the polarity.
Good Idea, But Struggles When using the 80Hz pulse tone it would not consistently show a positive or negative signal, making the results inconclusive. A better way to test "phase" is to play the sound file from this app and use a sound analyser app to view the waveform.
Not accurate Results are not accurate. It will waffle back and forth between positive and negative on the same speaker and wiring. There's a much more reliable polarity checker within the paid AudioTool app.
- Added: Move to SD support
Rattle your mirrors and your neighbors! Low bass for showing off your car stereo