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In The Good Feedback (GFB)
DEAR ANDRE
THANK YOU FOR EXPLAINING WHY NEGATIVE FEED BACK IS SUCH RUBBISH IN HI-FI. BUT WHY DO THESE SO-CALLED ELECTRONICS ENGINEERS NEVER TELL US ABOUT GOOD POSITIVE FEED BACK LIKE WE APPLY TO THE CYBORGS IN THE CHARIOT RACES? THEY GO FAST, THE ENGINEERS FEED BACK A POSITIVE IMPULSE, THEN THEY GO FASTER STILL. (1) THANK YOU FOR YOUR HELP. ADRIAN NEWBY Dear Adrian Let me first say that I am not against negative feedback. I am only against its thoughtless, careless or malicious application by the enemies of fidelity. Why, I have myself designed and built an amplifier, my T113 PP EL34, which has a pentode/ultralinear/triode switch as well as variable NFB to permit me conveniently to insert in ABX tests various topologies of natural and unnatural NFB for comparison. The T113 is one of my favourite amplifiers. I am also not against Christian or Islamist or homosexual practices to whatever extent they are not thoughtlessly, carelessly or maliciously enforced on those who do not wish them. Positive feedback is one of the best kept secrets of all time. As usual there is a commercial or political reason behind the conspiracy to keep the good stuff from the hoi polloi. In the case of positive feedback there is both a very profitable commercial and an overwhelming political necessity to keep the best stuff, positive feedback, from you. The commercial reason is, as usual, negative. (Yeah, I know, you guessed already!) All those silicon amps with excessive negative feedback are of course soon found to be unsatisfory and go into the bin. Then you buy a new one. It is a self-regenerating business. They sell you ****, then you buy more **** because they tell you it is better ****. Then you discover it doesn't became better excrement because the stink quotient is lower. You decide life's a bitch, and then you die. The political reason is like the fleshpots. Once the farm boys have tasted the pleasures of Gay Paree, how will you get them back to harvesting the fields? The economy will collapse! Real simple. You don't ever let them taste the pleasures of Gay Paree. Then the consequential problem doesn't arise. If they offer you an amp with positive feedback, you will never want to buy another. Compare with the factory to trash cycle of negative feedback above. They're not telling you about positive feedback because they don't want to do themselves out of a job and out of future profits. No percentage in satisfied customers! I intended telling you about positive feedback but they sent several large men to jostle my mistress on the street and whisper to her that if she wants to keep me alive she'd better persuade me to shut up about positive feedback. I hope this helps, Adrian. Please eat this letter instead of lunch. Andre Jute Conspiracy? What conspiracy? (1) BOYS, DON'T TRY THIS ON YOUR LITTLE BROTHER AT HOME, OR ON DADDY'S NEW TUBE AMP. BOTH WILL GO FASTER AND FASTER BUT YOU COULD GET HURT WHEN THEY FINALLY EXPLODE. THE PLEASURES OF POSITIVE FEEDBACK ARE MANY BUT THE PRICE IS ONLY FOR THE MOST COMMITTED AUDIOPHILES. |
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