hereforever
Well-known member
I have a pair of germanium mic preamps from an old Broadcast console that run off -48V
While testing them I've been using an International Power +48V off the shelf supply, floating
+48V of the psu to 0V on the amp
and
0V from the psu to -48V on the amp.
I'd like to rack these up with phantom power but am a little bit confused about how to properly wire the power supply grounds & shielding correctly. Maybe I'm overthinking it
Is this the correct way to wire it up?
0V from the psu to audio module B- (power rails)
+48V from the psu to audio module 0v & chassis
And if I use a SMPS option like the Meanwell for phantom (i.e. separate power supply) just wire it up as usual with 48v to phantom switch/resistors and 0v to audio module 0v/chassis?
While testing them I've been using an International Power +48V off the shelf supply, floating
+48V of the psu to 0V on the amp
and
0V from the psu to -48V on the amp.
I'd like to rack these up with phantom power but am a little bit confused about how to properly wire the power supply grounds & shielding correctly. Maybe I'm overthinking it
Is this the correct way to wire it up?
0V from the psu to audio module B- (power rails)
+48V from the psu to audio module 0v & chassis
And if I use a SMPS option like the Meanwell for phantom (i.e. separate power supply) just wire it up as usual with 48v to phantom switch/resistors and 0v to audio module 0v/chassis?