DIY Fisher 800b into a mic pre


Posted on Feb 6, 2014

I have an almost mint condition Fisher 800b hi-fi amplifier that I want to convert into a mic pre. All of the power supply SS diodes need to be replaced with modern, low noise parts. All electrolytic caps. need replacement. The signal caps. may still be good. Carbon composition resistors need to be checked for drift out of tolerance. Watch your step around the tuner sections,


DIY Fisher 800b into a mic pre
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lest you create an alignment issue. Talk to Jim McShane about tubes and parts. Jim can provide what you need to make the power supply BETTER than it originally was. Why on earth would you want to vandalize a fine vintage piece, which can play music far, far, better than current mass market guano All of the power supply SS diodes need to be replaced with modern, low noise parts. All electrolytic caps. need replacement. The signal caps. may still be good. Carbon composition resistors need to be checked for drift out of tolerance. Watch your step around the tuner sections, lest you create an alignment issue. Talk to Jim McShane about tubes and parts. Jim can provide what you need to make the power supply BETTER than it originally was. Damn, thanks man! That`s a huge help. And yes, this thing sounds amazing. I was tempted to use it for mixing, but it makes everything sounds amazing, so that`s no help for dailing in a mix, haha. I just love the sound so much, I want to be able to have that in my vocals. 3. When you say "the tuner section" are you referring to the am/fm tuner I had imagined I would want to remove all of the potentially noise-producing components that won`t be a part of the pre-amp circuit. Is this not the case Damn, thanks man! That`s a huge help. And yes, this thing sounds amazing. I was tempted to use it for mixing, but it makes everything sounds amazing, so that`s no help for dailing in a mix, haha. I just...




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