FET Microphone preamplifier

6unico · 8th December 2010, 03:15 PM

Hello, i am very new into designing my own boards but i am not new into building ready-kits and a lidle fixing audiogear. I would love to build (design) something like this:SMP 500 Microphone Preamplifier A version of our well-known SMP-2 mic preamp

but as a stand alone version not for lunchbox. Does anybody knows a ready scheme.

Thanks!

6unico · 9th December 2010, 07:38 AM

Nobody has a discrete JFET micpre scheme?

es44 · 9th December 2010, 08:04 AM

If You feed Google with Your headline, this is one of the hits that pops up:
Simple Stereo Electret Mic Preamp

Have fun.
Ebbe

6unico · 9th December 2010, 10:03 AM

Thanks Ebbe, but i was looking for something with +48V Phantompower and balanced in- and output. Would love if it was arround the 2sk170 JFet Transistor.

ikoflexer · 9th December 2010, 11:44 AM

Have a look at the first post of this thread. Scott might be able to point you in the right direction.

My version of the G = 1000 low noise measurement amp (for Ikoflexer).

6unico · 12th December 2010, 08:14 PM

this is not exactly what i was looking for. I think i will start experementing with a own circuit starting from a differntial amp made of 3 2sk170 and then try to understand how to go on. any sugestions?

8th December 2010, 03:15 PM	#1
6unico diyAudio Member Join Date: Nov 2010	FET Microphone preamplifier Hello, i am very new into designing my own boards but i am not new into building ready-kits and a lidle fixing audiogear. I would love to build (design) something like this:SMP 500 Microphone Preamplifier A version of our well-known SMP-2 mic preamp but as a stand alone version not for lunchbox. Does anybody knows a ready scheme. Thanks!

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9th December 2010, 07:38 AM	#2
6unico diyAudio Member Join Date: Nov 2010	Nobody has a discrete JFET micpre scheme?

9th December 2010, 08:04 AM	#3
es44 diyAudio Member Join Date: Apr 2005 Location: Fredericia, DK	If You feed Google with Your headline, this is one of the hits that pops up: Simple Stereo Electret Mic Preamp Have fun. Ebbe

9th December 2010, 10:03 AM	#4
6unico diyAudio Member Join Date: Nov 2010	Thanks Ebbe, but i was looking for something with +48V Phantompower and balanced in- and output. Would love if it was arround the 2sk170 JFet Transistor.

9th December 2010, 11:44 AM	#5
ikoflexer diyAudio Moderator Join Date: May 2008 Location: Toronto	Have a look at the first post of this thread. Scott might be able to point you in the right direction. My version of the G = 1000 low noise measurement amp (for Ikoflexer).

12th December 2010, 08:14 PM	#6
6unico diyAudio Member Join Date: Nov 2010	this is not exactly what i was looking for. I think i will start experementing with a own circuit starting from a differntial amp made of 3 2sk170 and then try to understand how to go on. any sugestions?

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