- #1
majickal
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Hi All,
This is my first post here and I wanted to ask a few questions of the community that have been widely discussed in my workplace regarding the differences between using 110 ohm cable and 600 ohm cable for microphone and line level signals.
Q: Firstly, is it OK to use AES/EBU 110 ohm balanced cable to pass a) line level signal b) microphone level signal, rather than 600 ohm microphone cable?
Q: Are there any implications for running (what is known in the audio industry as phantom power) +48v over the 110 ohm line?
Q: Should we expect to see a drop in dynamic range if 110 ohm cable is used to pass an analogue signal rather than a 600 ohm microphone cable?
Q: With regards to cable capacitance and signal integrity, which is the better choice for both microphone and line level signal?
Q: Are there any reasons other that those mentioned above that may suggest that running line level and microphone level signal over a 110 ohm cable is a bad idea?
Q: Can we expect any sort of artefacts to be present in an audio signal if it is transmitted over a 110 ohm cable?
http://recordmixandmaster.com/2010-02-mic-line-and-instrument-level-whats-the-difference"
Whilst there are a number of questions, I am really struggling to get to the bottom of this.
I have read and been told that there is no problem using 110 ohm cable for microphone level and line level applications.
However, I have also head, from one source, that is is a massive "no no" and under no circumstances should this be undertaken.
I do hope someone will be able to provide me with some insight into the matter, so I can get a definitive answer and put this one to bed, once and for all.
Best Regards
m :)
This is my first post here and I wanted to ask a few questions of the community that have been widely discussed in my workplace regarding the differences between using 110 ohm cable and 600 ohm cable for microphone and line level signals.
Q: Firstly, is it OK to use AES/EBU 110 ohm balanced cable to pass a) line level signal b) microphone level signal, rather than 600 ohm microphone cable?
Q: Are there any implications for running (what is known in the audio industry as phantom power) +48v over the 110 ohm line?
Q: Should we expect to see a drop in dynamic range if 110 ohm cable is used to pass an analogue signal rather than a 600 ohm microphone cable?
Q: With regards to cable capacitance and signal integrity, which is the better choice for both microphone and line level signal?
Q: Are there any reasons other that those mentioned above that may suggest that running line level and microphone level signal over a 110 ohm cable is a bad idea?
Q: Can we expect any sort of artefacts to be present in an audio signal if it is transmitted over a 110 ohm cable?
http://recordmixandmaster.com/2010-02-mic-line-and-instrument-level-whats-the-difference"
[PLAIN]http://recordmixandmaster.com/2010-02-mic-line-and-instrument-level-whats-the-difference said:[/PLAIN]
Line Level
Line level signals have a much higher voltage output than mic or instrument level, usually somewhere around 750 millivolts. As this signal is stronger it can be carried over a longer distance. 750 millivolts is the industry standard and allows for the interconnection of different devices from different manufacturers.
There are two types of line level:
consumer line level is at -10dBV
professional line level is at +4dBu (or dBm)
[PLAIN]http://recordmixandmaster.com/2010-02-mic-line-and-instrument-level-whats-the-difference said:[/PLAIN]
Mic Level
When sound hits the diaphragm of a microphone very low voltage signals are produced. On a dynamic microphone these signals are typically around 1.5 millivolts. For a more sensitive microphone the voltage would be more like 70 millivolts.
Mic level is -56 to -40 dbm.
Whilst there are a number of questions, I am really struggling to get to the bottom of this.
I have read and been told that there is no problem using 110 ohm cable for microphone level and line level applications.
However, I have also head, from one source, that is is a massive "no no" and under no circumstances should this be undertaken.
I do hope someone will be able to provide me with some insight into the matter, so I can get a definitive answer and put this one to bed, once and for all.
Best Regards
m :)
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