Details about Quad 405-2 Current Dumping AmplifierSee original listing
17 May, 2012 14:24:56 BST
[ 4 bids ]
Northampton, Northamptonshire, United Kingdom
Used: An item that has been previously used. The item may have some signs of cosmetic wear, but is fully ... Read moreabout the condition
Cosmetic damage, scuffs etc as expected with a used item.
Very Heavy So collection Preferred From NN1 5EW
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he Quad 405-2, The Current Dumping Amplifier (Page 1)
Current dumping is a Quad invention, and describes the first successful application of feed-forward error correction to audiopower amplifiers. A current dumping amplifier consists of a high power heavy duty amplifier, and a low power very high quality amplifier. The low power amplifier is arranged so that it constantly monitors input and output. It detects any difference and feeds forward the necessary correction to the output of the main amplifier. Quality is solely dependent upon the performance of the low powered high quality amplifier together with four passive components. When correctly designed all distortion in the output stage is reduced to zero.
this technique it is possible to produce an amplifier of very high
performance without using carefully matched relatively fragile output
devices. There are no crossover biasing problems, no alignment or
adjustment is required to obtain optimum performance and nothing can
go out of alignment during life. In the event of component failure,
replacement can be effected and performance restored without realignment.
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