A2+ troubleshooting tips


The following troubleshooting tips can help diagnose and correct most common issues with the A2+.  We have attempted to make this list as comprehensive as possible, so some of these may not apply to your issue, but please go through each tip and if the problem still persists then open a support ticket here.


Be sure to include your results and we will then respond as quickly as possible and do our best to resolve the issue.


If the power indicator on the A2+ external power supply unit is not illuminated, try these tips:

  1. Make sure the AC power cord is connected to the power supply unit and to a working AC power outlet.
  2. Check that the cable at the other end of the power supply is correctly connected to the rear panel of the left speaker.

If the power supply light is on but you are experiencing an audio-related issue, try these tips:
  1. Verify that the volume/power control on the rear panel is not turned all the way down or powered off (we recommend setting the volume to at least the 10 o’clock position).
  2. Check that the volume level of your audio source components or devices is not set to minimum volume or powered off.
  3. Check speaker wire connections from the left (powered) speaker to the right (passive) speaker. Confirm this by removing the speaker wire from on each speaker and reconnecting.  Also check the speaker wire polarity by verifying that the wires are going to same terminals on both speakers.
  4. Check that the cables from your audio sources to the speakers are properly connected. Confirm this by unplugging the audio cables and then reconnecting.
  5. Decrease the volume of the input audio source and increase the volume of the speakers.
  6. Try using different audio input sources and/or devices to see if the problem follows. 
  7. Try swapping your left and right speaker via the RCA left and right inputs to see if the issue remains in the same channel or follows the speaker.
  8. If you are using a computer with your A2+, make sure the volume is up on your media players, internet radio, master control, device volume, etc. and the balance control is centered. 
  9. If your input source has its own EQ, please make sure the low end is at a moderate level, as having too much bass can cause distortion.
  10. If you are using a wireless adapter, preamp, or external DAC with these speakers, remove them (temporarily) and connect the audio input source directly to the speakers. 
  11. Move your speakers to a different location to see if something is causing interference in the current setup.  Something as simple as a wireless internet router, cordless or mobile phone, or halogen lamp near the speakers can cause interference.


A2+ troubleshooting tips - internal USB digital-to-analog converter


Try these tips if your computer is not recognizing the speaker through your computer’s USB input or the sound through USB isn’t functioning correctly.


If you are using a Windows computer, uninstall the USB driver from your computer.  Then disconnect the USB cable to remove the A2+ from your computer and plug it back in to allow the USB driver to re-install automatically.  You can find complete instructions from Microsoft on how to reinstall a plug-and-play device under Windows here.


If you are using a Mac, try a NVRAM/PRAM reset.  This resets the system configurations for some audio and video related items and can many times help clear up problems related to audio.  See Apple’s support page for information on how to do this.