DIY mic mixer question

K Oscar · 30th July 2008, 10:59 PM

Hello,

I'm new to this and I don't think this is a hard thing to figure out, but I can't figure it out.

I wanted to build a 4 channel microphone mixer for use with electret microphones.
I wanted to use this circuit diagram:
http://www.aaroncake.net/circuits/mixer2.asp

My questions:

First:
If I need a fourth channel can I just add an extra input (input, Resistor and Pot)?

Second:
If I use this mixer do I still have to battery power the electrets like this:
http://www.kaspervanhoek.net/various/scheme.png

wakibaki · 30th July 2008, 11:05 PM

1. Yes

2. Yes

w

Don't expect fantastic performance, the 741 isn't very good and the circuits aren't very sophisticated.

K Oscar · 31st July 2008, 11:27 AM

I figured that the sound wouldn't be that great.

But thanks a lot!

K

30th July 2008, 10:59 PM	#1
K Oscar diyAudio Member Join Date: Jul 2008	DIY mic mixer question Hello, I'm new to this and I don't think this is a hard thing to figure out, but I can't figure it out. I wanted to build a 4 channel microphone mixer for use with electret microphones. I wanted to use this circuit diagram: http://www.aaroncake.net/circuits/mixer2.asp My questions: First: If I need a fourth channel can I just add an extra input (input, Resistor and Pot)? Second: If I use this mixer do I still have to battery power the electrets like this: http://www.kaspervanhoek.net/various/scheme.png

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30th July 2008, 11:05 PM	#2
wakibaki Banned Join Date: Jan 2008 Blog Entries: 2	1. Yes 2. Yes w Don't expect fantastic performance, the 741 isn't very good and the circuits aren't very sophisticated.

31st July 2008, 11:27 AM	#3
K Oscar diyAudio Member Join Date: Jul 2008	I figured that the sound wouldn't be that great. But thanks a lot! K