Sound advice, the only bit you can't do is the on screen level adjustment. None of it will fix the hum though.This is SVS repsonse.
Thinking he got my amp mixed up??
Hi Adam -
You have XT32, so follow the subwoofer level matching step at the beginning of running Audyssey and it will play a rumble tone and display an SPL meter on the screen. Adjust the subwoofer volume until the SPL meter reads 75 dB. Then the AVR sub channel level after Audyssey runs will be at/near 0 dB.
After Audyssey runs, make sure all speakers are set to Small and there are no crossovers deeper than 60 Hz. From your screen shots the fronts need to change - so go small/60 Hz on those. If the other channels are already set to Small/60 Hz or higher, then leave them 'as is'.
The subwoofer mode should be changed to LFE and the LPF/LFE should be set to 120 Hz.
Under Audio/Audyssey, leave XT32 set to Reference, leave Dynamic EQ enabled, and disable Dynamic Volume.
After you make these changes, if you need more output from the subwoofer channel, then use the app to slowly increase the subwoofer volume. Increasing 2-3 dB over the XT32 level match is typical/common. Avoid running the sub more than 4 dB hotter than the level match, as this will consume available dynamic headroom and increase the potential to drive the subwoofer into compression on demanding passages.
Regarding the buzzing sound you referenced below - your link is broken - please send it again and I'll have a listen.
Thanks and looking forward to your reply.