|
Home
/ FAQ
/ News Classifieds / Events |
Audio Asylum Thread Printer |
Get a view of an entire thread on one page |
80.136.95.214
In Reply to: RE: XLR to RCA (balanced2unbalanced) connection posted by Steve Eddy on July 01, 2009 at 11:27:02
Here is what I found in the web ?!?:
***************
http://soundslive.wordpress.com/2007/09/25/connecting-balanced-to-unbalanced-connections/
:
Since products may use balanced connections, unbalanced or a mix of both, it may on occasion become necessary to connect balanced inputs to unbalanced outputs, or vice versa. However, one needs to pay close attention to how this is implemented, otherwise several problems may arise.
Signal Loss
Although it rather a straight forward affair to connect a balanced XLR to an unbalance Jack via using an appropriate XLR to Jack lead, certain pin wiring is required other wise one may loose up to 6 dB of signal, which is quite a significant drop in signal level. Note that a drop of 3 dB equates to half volume, whereas 6 dB amounts to a ¼ volume (dB scale is logarithmic).
A classic example of this point can be demonstrated by connecting the balanced output of a Mixer (say a Mackie 1202 VLZ) to a power amplifier that only has unbalanced Jack inputs via using a balanced XLR to TRS Jack lead. In this example, pin 3 (negative signal) may be left floating with no connection at the input stage of the amp and the result can lead to around 6 dB loss of signal, which is pretty severe. The outcome is that overall system will never produce the level of output that is capable of producing, which may leave the user somewhat short of performance. By simply ensuring that pin 3 is shorted to ground, at either within the XLR or Jack, will remedy this issue.
*************
this is the origin of my question, but I am not sure if they are right.
this is the origin of my question, but I am not sure if they are right.
The author is incorrect.
Sorry.
se
Post a Followup:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2009, Audio Asylum, all rights reserved ]
[ Go Green ]
[ Take5 ]