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Re: Unity Gain Preamp [message #9871 is a reply to message #9870]

Sat, 16 December 2006 08:52

Wayne Parham
Messages: 18792
Registered: January 2001

Illuminati (33rd Degree)

I think you're exactly right. I've heard a handful of systems with passive "preamp" sections that sounded strained, and I thought they could use a buffer. I didn't take a scope to them - would have been rude to step up and say "sounds like shit, let me bring a scope" - but my guess is the source was overloaded for some reason. It probably was designed for a 47KΩ load and was actually seeing something much less, like maybe 1KΩ or something. A unity gain stage would solve this.

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[Message index]

		Unity Gain Preamp By: FredT on Sat, 16 December 2006 04:06
		Re: Unity Gain Preamp By: Wayne Parham on Sat, 16 December 2006 08:52
		Re: Unity Gain Preamp By: bretldwig on Tue, 26 December 2006 18:20
		Re: Unity Gain Preamp By: Wayne Parham on Wed, 27 December 2006 10:59
		Re: Unity Gain Preamp By: Forty2wo on Sun, 17 December 2006 20:34
		Re: Unity Gain Preamp By: PakProtector on Sat, 06 January 2007 19:03

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