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16th October 2009, 12:16 AM
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#1 |
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diyAudio Member
Join Date: Oct 2009
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High quality preamp
I'm building a preamp for my recording studio heres the schematics I am thinking about Balanced microphone preampbut I really don't know if this is what I need so please chime in with advice and if I'm way off track please let me know thanks Amzie
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17th October 2009, 06:45 AM
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#2 |
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diyAudio Member
Join Date: May 2004
Location: Vancouver Island
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It looks like it should work. You could also use an instrumentation amplifier; the INA103 seems to be popular for mic preamps. Googling or searching this site will turn up examples.
http://focus.ti.com/lit/ds/symlink/ina103.pdf Page 12 shows a mic preamp with 20 dB pad, phantom power, variable gain and a DC servo to eliminate output offset voltage. There's also the INA217 which TI says is a "Low Noise, Low-Distortion Instrumentation Amplifier Replacement for SSM2017" |
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