I've been hookiing up the HD24 to a Tascam M3500 mixer - balanced to unbalanced.
I had some ground loops big time - but by trying different cable configurations and some star grounding, I have managed to overcome them.
However, with gains turned up on the mixer, I still get a hum that seems to be related to the cooling fan in the HD24. When I switch on the HD24 the hum ramps up as the fan gets up to speed. (You know, like an "audible tachometer"). I have moved the audio leads around but it doesn't effect the sound.
If I lift the ground on the HD24 (I know not wise - but just to try it) the noise stops.
Has anyone come across this? Any suggested fixes?
Thanks as always,
Jeremy
I had some ground loops big time - but by trying different cable configurations and some star grounding, I have managed to overcome them.
However, with gains turned up on the mixer, I still get a hum that seems to be related to the cooling fan in the HD24. When I switch on the HD24 the hum ramps up as the fan gets up to speed. (You know, like an "audible tachometer"). I have moved the audio leads around but it doesn't effect the sound.
If I lift the ground on the HD24 (I know not wise - but just to try it) the noise stops.
Has anyone come across this? Any suggested fixes?
Thanks as always,
Jeremy