Can a portable CD player be considered as a balanced source?

[Bricolo]

Since it has 2 wires for output, and no one is grounded

 

[trwh]

Hi

If you record a CD with the hot (in phase) signal on the left channel, and the cold (out of phase) signal on the right, then I think the CDP could be used as a balanced source. Must be worth a try!

Hope this helps,
Tim

 

[dhaen]

Using batteries as power source, and only 1 channel connected:
YES.

 

[trwh]

dhaen,

Oops! I hadn't thought of what you suggested - it is a lot simpler and more elegant than my solution. Would my idea still work though?

Thanks,
Tim.

 

[dhaen]

[/list]

Would my idea still work though?

Yes Tim. And he could use any CD player.
Of course to make your recording he'd need a balanced source to begin with , or a very good phase splitter.

 

[dhaen]

And with both schemes, he'd only have 1 channel.

 

[trwh]

"Of course to make your recording he'd need a balanced source to begin with, or a very good phase splitter."

I had in mind using the "invert" function in an audio editing package, like Cool Edit.

Let us know how you get on Bricolo.

 

[Bricolo]

no

I was thinking about using a classical portable cd player, and a classical cd


then: on a amp with xlr inputs:

leave ground unconnected
use +in with the cd player's output (left or right)
use -in with the cd player's "ground"

and the same for the other channel

 

[dhaen]

Bricolo,
When you connect the second channel, it will connect the 2 XLR - connections together.
This will mean that the inputs will become "unbalanced".
Actually, this is not such a bad thing over a short distance.

 

[Bricolo]

partially unbalanced, since -in are the same, but +in aren't

and you also forgot that the 2 channels are 100% independant on the amp

 

[dhaen]

partially unbalanced

No, totally unbalanced; assuming the input impedance of the inputs are equal, the - inputs will be at virtual earth, with no current flowing.

and you also forgot that the 2 channels are 100% independant on the amp

IMO This makes no difference