Any idea about this mic preamp

zobsky · 16th May 2007, 03:48 PM

http://www.partsexpress.com/pe/showd...number=320-204

Looking for something cheap to work with an electret mic for speaker measurement. I'm not sure if this thread should be here or in the loudspeaker forum but don't want to cross-post.

This kit has been developed as preamp module for a number of audio applications where there is insufficient input signal.
Use as a microphone pre-amplifier or for level correction.
Power required: 10-30VDC / 10mA
Output impedance: 1Kohm
Adjustable output level: max. 40dB
Frequency range : 20Hz to 20KHz ± 3dB
Max. input signal : 40mV
PCB dimensions: 1.2" x 1.7"
K1803

Minion · 16th May 2007, 05:53 PM

Well that Mic preamp looks pretty cheaply Made pluss it isn"t ballanced and has no Phantom power to Power an electret mic and it has Electrolytic Caps in the signal Path.....

You can probably make one that privides the same quality audio output for cheaper than one you can buy one......

http://www.epanorama.net/pdf_redirec...uits/Micro.GIF

or

http://www.redcircuits.com/Page49.htm

both of these curcuits will probably produse just as good or better audio than the one you posted and could probably be made for a couple Bucks......

Cheers

Hornlover · 16th May 2007, 07:55 PM

Here is a good, low cost solution.

http://www.audio-kits.com/page/page/4071313.htm

zobsky · 17th May 2007, 01:51 AM

Thanks, .. I'll build one of them

16th May 2007, 03:48 PM	#1
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	Any idea about this mic preamp http://www.partsexpress.com/pe/showd...number=320-204 Looking for something cheap to work with an electret mic for speaker measurement. I'm not sure if this thread should be here or in the loudspeaker forum but don't want to cross-post. This kit has been developed as preamp module for a number of audio applications where there is insufficient input signal. Use as a microphone pre-amplifier or for level correction. Power required: 10-30VDC / 10mA Output impedance: 1Kohm Adjustable output level: max. 40dB Frequency range : 20Hz to 20KHz ± 3dB Max. input signal : 40mV PCB dimensions: 1.2" x 1.7" K1803 __________________ "Any fool can know. The point is to understand" - Albert Einstein

17th May 2007, 01:51 AM	#4
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	Thanks, .. I'll build one of them __________________ "Any fool can know. The point is to understand" - Albert Einstein

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16th May 2007, 05:53 PM	#2
Minion diyAudio Member Join Date: May 2006	Well that Mic preamp looks pretty cheaply Made pluss it isn"t ballanced and has no Phantom power to Power an electret mic and it has Electrolytic Caps in the signal Path..... You can probably make one that privides the same quality audio output for cheaper than one you can buy one...... http://www.epanorama.net/pdf_redirec...uits/Micro.GIF or http://www.redcircuits.com/Page49.htm both of these curcuits will probably produse just as good or better audio than the one you posted and could probably be made for a couple Bucks...... Cheers

16th May 2007, 07:55 PM	#3
Hornlover diyAudio Member Join Date: Sep 2004 Location: Central California	Here is a good, low cost solution. http://www.audio-kits.com/page/page/4071313.htm

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