Yes, I'm aware of the workaround, how it works, and reason for it. I'm asking if you know how well it works in practice as you're integrating a system like this.
The pumping is a function of the signal being driven, and the inversion of groups of channels is an attempt to balance this out. Of course, you can only achieve a perfect balancing when the inverted and non-inverted channels are outputting the exact same signal. When they're not, there will still be pumping to a greater or lesser degree.
In a multichannel application it likely places some importance on which channels are used in signal pairs - you'd probably want to make sure your front left and right were inverted relative to each other to have the best chance of a good balancing. Having both front and left on the same phase setup with your heights on other would be a much worse way to have things hooked up.
Do you make it clear which channels are wired up which way, and advise on the best way to load speakers onto the channels used? How and at what level of imbalance does the strategy fail and result in protection kicking in?
Yes it is clearly written in the manual supplied with this amplifier how the channels work and how they should be connected. This system performs and measures perfect. It actually performs the same as our Purifi mini stereo amplifier.
For instance in a 7.1 surround system the speakers should be connected to the amp like this:
Channel 1&2: Front L&R
Channel 3&4: Surround L&R
Channel 5&6: Rear L&R
Channel 7: Center speaker
The center speaker should be always connected to the last channel of the amp.
For instance if you are powering a 4-way speaker system the speakers should be connected to the amp like this:
Channel 1&2: L&R Bass drivers
Channel 3&4: L&R Low drivers
Channel 5&6: L&R Mid drivers
Channel 7&8: L&R Tweeters
For this reason each pair of channels have their own dedicated gain switch on the back and xlr-rca selector switch.
One of the amazing features of this amplifier system is the amplifier is upgradable. For instance if you buy a 7 or 8 channel version and decide to extend your surround system with more speakers, the amp can be upgraded to more channels all up to 12 channels in one enclosure. Because of this feature this amplifier system will have a very good resale value as well.