Note to the Audyssey users:
Phase error reports are driven by either of these possibilities:
- Your speaker is really out of phase and reversing the leads to it is the fix
- Your big dipole radiator energizes reflections that fool Audyssey into thinking the speaker is out of phase when it's not. Re-measure.
To confirm it's one or the other, do a 'test', re-measure with the mic placed in the near-field of the speaker in question. That is, within six or eight feet of the panel, and as directly aligned with its center as possible
Always take the phase error with a bit of skepticism, look into it but often, it’s just fooled by reflections.
Remember, our MartinLogans are large, linesource dipole radiators, and the rear wave from the panels
is out of phase. If that rear wave energy has a short enough reflected path to the measurement mic (typically six or so feet relative to the front direct energy), then Audyssey can miss-read the phase on that channel.
Again, that can be verified by placing the mic closer to the speaker in question, and re-doing a measurement and checking phase on that speaker.
If that speaker is good, then leave it alone, and re-do the entire Audyssey measurement for the rest of the speakers.
Audyssey totally depends on a well executed measurement run for its accuracy. Practice makes perfect, so don’t be afraid to redo these several times.