I wired a rotary selector switch for 6 unbalanced external incoming signals. (preamp inputs)
I thought it was a good idea to put all the "grounds" for each signal, on a separate deck of the switch...so that only the selected input's ground is connected to the preamp....the other 5 grounds are not, until they are selected.
This was to prevent noise or loops from entering the preamp.
But I get a loud "pop" when switching between inputs.
Also note...on my selector switch....Right and Left channels switch decks are MBB....but Ground deck is BBM.
Can I jumper all the grounds together with a resistor (to eliminate pops), and still get the ground isolation I desire ?
=FB=
I thought it was a good idea to put all the "grounds" for each signal, on a separate deck of the switch...so that only the selected input's ground is connected to the preamp....the other 5 grounds are not, until they are selected.
This was to prevent noise or loops from entering the preamp.
But I get a loud "pop" when switching between inputs.
Also note...on my selector switch....Right and Left channels switch decks are MBB....but Ground deck is BBM.
Can I jumper all the grounds together with a resistor (to eliminate pops), and still get the ground isolation I desire ?
=FB=