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

Bricolo · 24th December 2002, 09:01 AM

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

trwh · 24th December 2002, 09:43 AM

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 · 24th December 2002, 09:54 AM

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

trwh · 24th December 2002, 09:58 AM

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 · 24th December 2002, 10:04 AM

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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.

dhaen · 24th December 2002, 10:06 AM

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

trwh · 24th December 2002, 10:19 AM

"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 · 24th December 2002, 10:22 AM

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 · 24th December 2002, 10:32 AM

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 · 24th December 2002, 10:39 AM

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

24th December 2002, 09:01 AM	#1
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	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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24th December 2002, 09:43 AM	#2
trwh diyAudio Member Join Date: Apr 2002 Location: UK	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

24th December 2002, 09:54 AM	#3
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	Using batteries as power source, and only 1 channel connected: YES.

24th December 2002, 09:58 AM	#4
trwh diyAudio Member Join Date: Apr 2002 Location: UK	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.

24th December 2002, 10:06 AM	#6
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	And with both schemes, he'd only have 1 channel.

24th December 2002, 10:19 AM	#7
trwh diyAudio Member Join Date: Apr 2002 Location: UK	"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.

24th December 2002, 10:22 AM	#8
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	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

24th December 2002, 10:32 AM	#9
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	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.

24th December 2002, 10:39 AM	#10
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	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