preamp with opamp...help

cukkurullo · 31st May 2006, 03:58 PM

Hi Guys,

I would like to start a new project. I would like to build a preamplifier similar to a GainGard 47labs, I mean I would just to have gain stage. My amplifiers are 100Watts, 100KOhms input, so very easy to drive.

I wonder whether there is some project going on which makes line stage preamp using opamps.

I hope somebody can help,

Cukkurullo

PMA · 31st May 2006, 04:23 PM

Hi Pierre,

just put a pot in front of this:

http://www.pha.inecnet.cz/macura/buffer_en.html

Pavel

cukkurullo · 31st May 2006, 04:58 PM

.....mh! I read the pages, it says that short cables shluld be used.. not my case!

Anyway, I also see too many components, I would something like in the fashion of the 47 labs stuffs

Pierre

poobah · 31st May 2006, 05:06 PM

Nice circuit Pavel!

Transmission lines... I like!

roger-k · 31st May 2006, 07:25 PM

What about one of this:
http://sound.westhost.com/projects-2.htm

31st May 2006, 03:58 PM	#1
cukkurullo diyAudio Member Join Date: May 2006	preamp with opamp...help Hi Guys, I would like to start a new project. I would like to build a preamplifier similar to a GainGard 47labs, I mean I would just to have gain stage. My amplifiers are 100Watts, 100KOhms input, so very easy to drive. I wonder whether there is some project going on which makes line stage preamp using opamps. I hope somebody can help, Cukkurullo

31st May 2006, 07:25 PM	#5
roger-k diyAudio Member Join Date: Mar 2004 Location: Karmøy in Norway	What about one of this: http://sound.westhost.com/projects-2.htm __________________ Roger

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31st May 2006, 04:23 PM	#2
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Hi Pierre, just put a pot in front of this: http://www.pha.inecnet.cz/macura/buffer_en.html Pavel

31st May 2006, 04:58 PM	#3
cukkurullo diyAudio Member Join Date: May 2006	.....mh! I read the pages, it says that short cables shluld be used.. not my case! Anyway, I also see too many components, I would something like in the fashion of the 47 labs stuffs Pierre

31st May 2006, 05:06 PM	#4
poobah diyAudio Member Join Date: Nov 2005	Nice circuit Pavel! Transmission lines... I like!

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