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Dynamic mics and Ribbon mics on Hi-Z inputs?
Old 29th October 2007
  #1
Gear Nut
 

Dynamic mics and Ribbon mics on Hi-Z inputs?

As source components typically like to be loaded down, and ribbon mics like high impedance inputs for flattest frequency response why not use a Hi-Z input?

Of course, it would take a either an XLR to 1/4" unbalanced adaptor or a mic cable that does the same, but is there a reason not to do this?

All I can think of off hand is that Hi-Z source components should use short cables as they tend to pick up noise, but would this be an issue when the source is still low impedance?
Old 17th July 2015
  #2
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Lorenzop's Avatar
 

Quote:
Originally Posted by Elk View Post
As source components typically like to be loaded down, and ribbon mics like high impedance inputs for flattest frequency response why not use a Hi-Z input?

Of course, it would take a either an XLR to 1/4" unbalanced adaptor or a mic cable that does the same, but is there a reason not to do this?

All I can think of off hand is that Hi-Z source components should use short cables as they tend to pick up noise, but would this be an issue when the source is still low impedance?
Bump.
There are now several mic preamps that offer specifically for ribbons a "very high imput impedance rating" sucah as AEA TRP that has at least 10k ohm.

Now there are DI "Hi Z " instrument inputs that are also at 100k so actually even higher than the mic preamp. But most are about 1M.

So can someone explain please why not plug mic level (low z) into a high Z input thats even higher than normal mic level input impedance??
Old 18th July 2015
  #3
The Hi Z input won't typically give you the gain needed, especially in the case of most ribbons: you generally need quite a bit of clean gain.
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