Can a portable CD player be considered as a balanced source? - diyAudio
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Old 24th December 2002, 09:01 AM   #1
Bricolo is offline Bricolo  France
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Default Can a portable CD player be considered as a balanced source?

Since it has 2 wires for output, and no one is grounded
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Old 24th December 2002, 09:43 AM   #2
trwh is offline trwh  United Kingdom
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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
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Old 24th December 2002, 09:54 AM   #3
dhaen is offline dhaen  Europe
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Using batteries as power source, and only 1 channel connected:
YES.
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Old 24th December 2002, 09:58 AM   #4
trwh is offline trwh  United Kingdom
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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.
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Old 24th December 2002, 10:04 AM   #5
dhaen is offline dhaen  Europe
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Quote:
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.
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Old 24th December 2002, 10:06 AM   #6
dhaen is offline dhaen  Europe
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And with both schemes, he'd only have 1 channel.
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Old 24th December 2002, 10:19 AM   #7
trwh is offline trwh  United Kingdom
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"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.
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Old 24th December 2002, 10:22 AM   #8
Bricolo is offline Bricolo  France
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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
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Old 24th December 2002, 10:32 AM   #9
dhaen is offline dhaen  Europe
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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.
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Old 24th December 2002, 10:39 AM   #10
Bricolo is offline Bricolo  France
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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
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