Yes, some hum may be present, even with the finest systems, when the volume is completely ramped up.
You could choose to further investigate and locate the source of the hum and solutions could include running a dedicated circuit, the purchase of a power regenerator, or simply separating your signal cables from your power cords (and if they must cross make sure it is at a 90-degree angle). Sure, component distance, shielded cables, etc. should always be considered but, in my experience, the hum is always power related.
I would venture to say that acceptable hum would be that you have to put your ear next to the speaker to hear it. If the hum is audible from the listening position then that seems like a bit too much in my opinion - even if you will never play music at max volume.
Hope that helps.
Burt - Seattle Hi-Fi
You could choose to further investigate and locate the source of the hum and solutions could include running a dedicated circuit, the purchase of a power regenerator, or simply separating your signal cables from your power cords (and if they must cross make sure it is at a 90-degree angle). Sure, component distance, shielded cables, etc. should always be considered but, in my experience, the hum is always power related.
I would venture to say that acceptable hum would be that you have to put your ear next to the speaker to hear it. If the hum is audible from the listening position then that seems like a bit too much in my opinion - even if you will never play music at max volume.
Hope that helps.
Burt - Seattle Hi-Fi