FWIW, I always thought my LS100 unmuted itself rather quickly as well. Just timed mine and it took 15 seconds, like mraudio's.
mraudio- I'm curious whether your LS100 has always unmuted in 15 seconds? Or did it originally take longer to unmute, but then somehow changed?
As far as the 'pop', I cant really add much- I dont use the trigger function, and my KWA100SE amp takes longer to turn on than the LS100. Usually, I just click both power switches on at the same time. The LS100 will unmute itself first after 15 seconds, and then about 30 seconds later, the KWA100SE will switch on and be ready to go.
The few times I have powered on the KWA100SE amp prior to the LS100 has caused the amp to shut itself off when the pre unmutes. It seems some safety mechanism inside the amp doesnt like when the LS100 unmutes and it just immediately shuts down. It requires that I unplug and replug the power cord from the back of the amp and then switch it back on for it to function again. Anyone else noticed this?