I have a Pioneer crossover that takes in a single 12V supply and the input shield is biased to ~half the supply voltage. When I hook it up in a home environment there is no sound output unless I connect the input and output rca shields(not recommended). How would I go about using this device in house?
+6.71V from input shield to output shield
ground to input shield 6.70Vdc
+.0047Vdc ground to Output shield
+6.71V from input shield to output shield
ground to input shield 6.70Vdc
+.0047Vdc ground to Output shield
I think there's something wrong with it. The input could be biased at half supply voltage, but its ground shouldn't be. Different grounds for input and output sounds wrong.
Anyway, to use it you would need an audio transformer. A standard 600 ohm - to - 600 ohm one should work fine. A transformer has no DC connection from input to output.
Another thing to try would be to ignore the input ground and use the output ground for both. A (say) 1 uF coupling capacitor at the input will be necessary if the input has a DC voltage to ground.
Anyway, to use it you would need an audio transformer. A standard 600 ohm - to - 600 ohm one should work fine. A transformer has no DC connection from input to output.
Another thing to try would be to ignore the input ground and use the output ground for both. A (say) 1 uF coupling capacitor at the input will be necessary if the input has a DC voltage to ground.
I tried connecting the input shield to the output shield through caps. .68 and 2.2 uF and all I get is a click when the cap charges but it doesn't allow sound through. I don't have a transformer like that handy but I will try it when I can.
This is a Pioneer CD-625 car crossover so I am guessing this is done as some sort of noise reduction to have an isolated signal ground.
This is a Pioneer CD-625 car crossover so I am guessing this is done as some sort of noise reduction to have an isolated signal ground.
- Status
- Not open for further replies.