I am not familiar with impedance and hope someone on here can help. I have a valve mic pre with a balanced output of nominal 600 Ohms, This is plugged into a RME 9632 with a input impedance of 10k Ohms. All I am getting is a thin sounding very very quiet input sound.
Is there a problem with the above impedance match?
Thankyou.
Impedance!!!!!!!!!!!!!!!!
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- KVRAF
- 6519 posts since 13 Mar, 2002 from UK
Why don't you tell us all? Since you seem to know.snooky wrote:600 ohms into 10,000 ohms ...you tell me?
Now with improved MIDI jitter!
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- Banned
- 380 posts since 13 Feb, 2007
+(LULZ)+snooky wrote:600 ohms into 10,000 ohms ...you tell me?
wow collision of the twats!!!!!nuffink wrote: Why don't you tell us all? Since you seem to know.
its the end of the world!
http://www.googlefight.com/index.php?la ... rd2=snooky
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- KVRAF
- 6519 posts since 13 Mar, 2002 from UK
Are you going to whine like a stuck pig the next time you're banned too? Your pathetic little sig plea was so touching.Marduchk wrote:wow collision of the twats!!!!!
its the end of the world!
Now with improved MIDI jitter!
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- Banned
- 380 posts since 13 Feb, 2007
???
i dont remember whining, please, refresh my memory.
(you can do it via pm or seperate thread if you wish)
thank you for your business
but of course we all know youre just mad cause snooky beat you in googlefight
i dont remember whining, please, refresh my memory.
(you can do it via pm or seperate thread if you wish)
thank you for your business
but of course we all know youre just mad cause snooky beat you in googlefight
Last edited by Marduchk on Thu Mar 29, 2007 7:04 pm, edited 1 time in total.
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- Banned
- 380 posts since 13 Feb, 2007
i dont think it can Lagrange, although i have absolutely nothing to prove that, or to explain why.
but hey wtf its kvr
as far as "collision of the twats" you just saw it!
but hey wtf its kvr
as far as "collision of the twats" you just saw it!
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- KVRAF
- 6519 posts since 13 Mar, 2002 from UK
No it's probably not an impedence mismatch. Most equipment is designed to have a low output impedence and a high input impedence. Look elsewhere for the problem.optimo wrote:I am not familiar with impedance and hope someone on here can help. I have a valve mic pre with a balanced output of nominal 600 Ohms, This is plugged into a RME 9632 with a input impedance of 10k Ohms. All I am getting is a thin sounding very very quiet input sound.
Is there a problem with the above impedance match?
Thankyou.
And you might want to look somewhere other than kvr at the moment. It's full of pointless trolls.
Last edited by nuffink on Thu Mar 29, 2007 7:19 pm, edited 1 time in total.
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- KVRist
- 328 posts since 27 Apr, 2004 from Always here
Hi
Clearly there is a big mis-match and this will result in the signal from the mic being reduced. For maximum signal transfer, the output/input and input/ouput should be matched if possible.
To use this mic, you will need to put it through pre-amp to increase the output.
In reality, if the signal is larger and there is still an impedance mis-match, you will not lose and frequency response. In other words, a mismatch is tolerable but if you increase the signal (without too much noise)it will work just fine.
Clearly there is a big mis-match and this will result in the signal from the mic being reduced. For maximum signal transfer, the output/input and input/ouput should be matched if possible.
To use this mic, you will need to put it through pre-amp to increase the output.
In reality, if the signal is larger and there is still an impedance mis-match, you will not lose and frequency response. In other words, a mismatch is tolerable but if you increase the signal (without too much noise)it will work just fine.
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- KVRAF
- 2278 posts since 8 Apr, 2003
Everything you ever wanted to know about impedance but were afraid to ask:
http://www.soundonsound.com/sos/Jan03/a ... rkshop.asp
http://www.soundonsound.com/sos/Jan03/a ... rkshop.asp
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- KVRist
- 460 posts since 13 Sep, 2004
This is great! Finally, I will be able to understand what in the world is impedanceLBN wrote:Everything you ever wanted to know about impedance but were afraid to ask:
http://www.soundonsound.com/sos/Jan03/a ... rkshop.asp
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- KVRist
- 123 posts since 13 Feb, 2004 from Brookline, MA
Just to reiterate what nufflink said (which is absolutely correct), you want your output impedance to be much lower than your input impedance, so 600 ohms into 10k ohms should be fine.
The key bit from the Sound On Sound article is:
The key bit from the Sound On Sound article is:
The solution to this problem is to dispense with the idea of matched impedances completely, and use what is called voltage matching instead. The idea here is to engineer the equipment to have the lowest possible output impedance and a relatively high input impedance — the difference between them must be at least a factor of ten, and is often much more. Modern equipment typically employs output impedances of around 150(omega) or below, with input impedances of at least 10k(omega) or above. With the minuscule output impedance and relatively high input impedance, (the cable impedance can be disregarded completely in comparison) the full output voltage should be developed across the input impedance.