I've got a nasty case of "I'm-concerned-that-my-expensive-new-equipment-may-be-broken-even-though-it-probably-isn't-itus" and the only cure is you, the friendly and helpful denizens of the Axe-FX board. You guys already helped me with one such issue in the bug forum and I have just one more issue that I'd like to get clarity on and it's actually in regards to the ART SLA-2 rather than the Axe.
Based on the positive reviews on this board I purchased an ART SLA-2 to go with my new Axe-FX Ultra. The marketing copy for this power amp describes it as "extremely low noise". If they mean relative to an electric pencil sharpener then sure, my unit is extremely low noise, but sitting powered on in my very quiet room at night this unit seems to drive a surprising amount of hum through my 2x12 cab – regardless of whether or not a guitar is plugged in.
Running in stereo, Channel 1 and Channel 2 both drive a slight, tolerable hum through their respective speakers when their attenuation dials are both set to 0 dB (max volume). But whereas the hum in Channel 2 vanishes almost completely as you start to increase its attenuation, the hum in Channel 1 grows much louder as you begin to increase its attenuation – loud enough to hear it in an otherwise silent room from 10 feet away.
I know the loud hum in Channel 1 isn't caused by the cab or the speaker cables because I just plugged two different 100-watt heads into the cab using the same cables and it's all relatively quiet.
So, is my SLA-2 behaving normally or abnormally?
Thanks in advance for the help!
Based on the positive reviews on this board I purchased an ART SLA-2 to go with my new Axe-FX Ultra. The marketing copy for this power amp describes it as "extremely low noise". If they mean relative to an electric pencil sharpener then sure, my unit is extremely low noise, but sitting powered on in my very quiet room at night this unit seems to drive a surprising amount of hum through my 2x12 cab – regardless of whether or not a guitar is plugged in.
Running in stereo, Channel 1 and Channel 2 both drive a slight, tolerable hum through their respective speakers when their attenuation dials are both set to 0 dB (max volume). But whereas the hum in Channel 2 vanishes almost completely as you start to increase its attenuation, the hum in Channel 1 grows much louder as you begin to increase its attenuation – loud enough to hear it in an otherwise silent room from 10 feet away.
I know the loud hum in Channel 1 isn't caused by the cab or the speaker cables because I just plugged two different 100-watt heads into the cab using the same cables and it's all relatively quiet.
So, is my SLA-2 behaving normally or abnormally?
Thanks in advance for the help!