Speaker Polarity is an iPhone app that tests a speaker for correct polarity (sometimes called "phase"). See our new demo video of this module. This video was recorded in the simulator, and shows the module running within AudioTools. To use Speaker Polarity, you need to send our proprietary test signal to your speaker. Then, holding the iPhone near the speaker, the polarity is read using the internal microphone (located on the bottom of the phone). Speaker Pop generates the signal, and as long as you use a stereo tip-ring-sleeve 1/8" audio cable, and not a cable with a 3-ring connector, the iPhone internal microphone will still function.
- Test signal can be generated when running speaker polarity just turn on the output signal switch
- Plug a 1/8" stereo cable into the headphone jack, and plug the other end into a Mac running garage band, capture the signal, and burn a CD
- Just go to our download page to get the test signal, as a WAV file, and burn that to a CD
- Play the test signal through the speaker and read the result
- Algorithm used for testing speaker polarity is quite advanced, and is designed to prevent false triggers and bad readings
- Will work with any type of speaker, small or large, and will work quite well at a distance, as long as the test signal is strong enough
- Burn the WAV file to a CD, or you can use the AC3 format file as the soundtrack on a DVD to make a home theatre test DVD
- Note that iDVD does not support AC3 files, so you would have to use a program like DVD Studio Pro to burn the DVD
- We have heard that some versions of toast will burn this signal to a DVD
- We will be making home theatre test DVDs available soon
- When you play the DVD, the speaker pop signal is sent to all 5 speakers and the subwoofer
- Just bring the iPhone near the speaker you want to test (6" to 2' will usually work well) and read the results
