Re: XLR input-output impedance?
- From: Serge Auckland <serge.auckland@xxxxxxxxxxxxx>
- Date: Tue, 06 Jun 2006 17:59:17 +0100
mr.whatever@xxxxxxxxx wrote:
Hi!What you describe is the standard way of connecting pro equipment. The output is from a low impedance, that will drive any load of 600 ohms or higher. The input presents a 10k impedance so will not load the output feeding it. Your connections will work exactly as intended, with no noticeable signal attenuation.
I'm trying to determine the effect of connecting an XLR input/output:
output: Balanced, 600ohm or higher load, +4dBu nominal, +26dBu max
input: electronically balanced, 10k load, +24dBu max
I know both connections are XLR, but I have a nag that the impedance
differences might cause some signal attenuation (?).
By the way, how do I grasp the dBu units? What is it referenced to?
Thanks!
dBu has the same voltage levels as dBm. dBm is referenced to 1mW, so 0dBm has a voltage level of 775mV into 600 ohms. The "u" in dBu refers to "unloaded", that is, a pure voltage into a high impedance.
S.
.
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