Extra information for Audyssey users…
Something more to share with Audyssey calibration…Something most of us did not even realize it until now.
# Fact 1: Are you aware that the very FIRST calibration point is the most crucial of all the rest of the calibration points after it? In fact, the first calibration point should ALWAYS be at the “sweet-spot” or least where you will be seated 90% of the time when watching a movie! The rest of the listening points AFTER the 1st point will derive its average from the first point. The first point is vital in the sense that it determines the distance, level, delay and even crossover point. So if you placed your calibration mic at a different (say 2nd or even the 3rd sweet-spot) on a 2 -or 3 seater couch, you may want to re-do your calibration one more time for more accurate readings.
# Fact 2: This is more for knowledge but since I discovered it along the way, I thought I might as well share it here. The frequency knob on your physical subwoofer that has the labelling of 40Hz, 50Hz, 60Hz…120Hz is actually not a crossover. That is merely the Low Pass Lifter frequency (LPF) for the subwoofer to match with a non-Audyssey based AVR or Pre/Pro Amp or even a CD player. To qualify for a “crossover”, it MUST consist of 2 things, a high pass filter and a low pass filter, as the name implies, high frequency channelled to the speakers and low frequency to the subwoofer…the “frequency knob” on the physical subwoofer only allow LPF and does not have a HPF. In other words, if you allow the Audyssey to take over the calibration process, which also mean the crossover settings (this is the recommended way, hence Audyssey wanted end-user to turn the LPF filter to the highest or the crossover switch to “off” position) will be completely taken over by the AVR during the Audyssey calibration.
# Fact 3: Audyssey is NOT the one responsible for setting your speakers to “Full-range” or 'Large" in some context, it is the AVR manufacturer that sets the threshold determining the how well a speaker is able to handle the high and the low frequency. What Audyssey does during the calibration process is to insert correction filters at different frequency spectrums.
# Fact 4: Are you aware that you should NEVER set a crossover point lower than the default crossover after the Audyssey calibration. For instance, after calibration, Audyssey set the two Mains (Left and Right Speakers) to say 70Hz. You should never attempt to lower the crossover to anything lower than 70 - i.e. 60Hz as this will indirectly create a “null” for the speakers. Rule of thumb is, you can increase the crossover higher and not lower, meaning you can set it to 80Hz - 100Hz and the correction filters will still remain valid.