Have finally connected my subs via high level to my Yamaha AS-1100 for music duties to extend bass of my mains. (Here's one for free, 'Frozen' by madonna has a 32hz bass signal in there!) the A-S1100 is in HT bypass mode connected to AVR (Yamaha AXR 3070).
So subs still have LFE connected to the AVR for films/music/TV etc.
Whenever the AS-1100 now comes on (which is always as its on for either music or film activity) there's an initial sub woofer thud impulse.
The black wire from the high level is left floating (have to float it as the stereo amp is floating/circlotron topology), can it be due to that? Hum isn't too bad, less so now that only one high level wire is connected to each R and L terminal output. Before I was doubling up (and doubling gain) but the subs were humming a bit and bass was too much arguably.
Will chassis grounding the black high level leads help or is it an artefact of the AS-1100?
So subs still have LFE connected to the AVR for films/music/TV etc.
Whenever the AS-1100 now comes on (which is always as its on for either music or film activity) there's an initial sub woofer thud impulse.
The black wire from the high level is left floating (have to float it as the stereo amp is floating/circlotron topology), can it be due to that? Hum isn't too bad, less so now that only one high level wire is connected to each R and L terminal output. Before I was doubling up (and doubling gain) but the subs were humming a bit and bass was too much arguably.
Will chassis grounding the black high level leads help or is it an artefact of the AS-1100?
