Hi I am building a mic preamp for measurement mic. I am trying to build rod elliot's project 93. The schematic i am building with is figure 6 which is found here Recording and Measurement Microphones
I am using a 9V battery to power it. In the page he says that C5 and C6 should be reversed when using battery power. Is reversing C6 correct ? Its like the positive of C6 is connected to ground. I am confused if it should be this way.
Any help is appreciated. thanks.
I am using a 9V battery to power it. In the page he says that C5 and C6 should be reversed when using battery power. Is reversing C6 correct ? Its like the positive of C6 is connected to ground. I am confused if it should be this way.
Any help is appreciated. thanks.
Thanks for clarifying. I have built the mic preamp and I am using it. I paired it with a projects unlimited mic. The specs are here AOM-4544L-R
The mic works only when i hold the mic close enough. I actually built the mic to do some measurements of my speaker. I think the mic preamp does not have enough amplification. Is it possible to increase the gain or is this mic just can't be used ?
The mic works only when i hold the mic close enough. I actually built the mic to do some measurements of my speaker. I think the mic preamp does not have enough amplification. Is it possible to increase the gain or is this mic just can't be used ?
Hi,
if i use this mic preamp ( current URL Recording and Measurement Microphones ) with external power supply which give ~+9V (LM317, discrete PSU or something similar), is this the same as well as to use battery (have to eliminate R10 and R11 and reverse the polarity of C5 and C6)?
Thanks,
if i use this mic preamp ( current URL Recording and Measurement Microphones ) with external power supply which give ~+9V (LM317, discrete PSU or something similar), is this the same as well as to use battery (have to eliminate R10 and R11 and reverse the polarity of C5 and C6)?
Thanks,
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