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845 based No R No C Amplifier
Is it possible to build a reasonably high powered amplifier without using any resistors or any capacitors? This article describes a 10 watt single ended 845 amplifier that does that very thing: that is, there are no resistors, capacitors, batteries, solid state devices etc anywhere.

Basic calculations enough for building transformers with examples. (single ended amplifiers)

There are different methods for measuring the power ratings for amplifiers and speakers. And different measuring methids give different values so it is vital to understand the difference between theosedifferent power ratings to be able to make at least some comaparisionf between different power ratings. This article is collection of information posted to rec.audio.tech newsgroup [...]

LMTHREE (Low Mu Triode with Higher Raw Efficiency Emulator)
1. Introduction
Power amplifiers are probably the audio components where you may find the largest variety of circuits and technology. Solid state or tubes, push-pull or single ended, triodes, pentodes, fets, bipolar transistors, class A, B, AB or any other letter you can think. Chances are that if [...]

You have bought yourself a pair of your dream bookshelf speakers and then plod them onto a pair of stands of the appropriate height without any other due considerations, and find that the sound was less than what you expect. Despite running in after the required hours they still don’t right. This can lead to [...]

Since 1999 when the original article “Why SE Tube Amplifiers?” was placed in the Internet I have received some feedback from readers. Part of this feedback has been in the form of direct questions and some through discussions on Internet groups that I have either followed or that I have been called attention by someone. [...]

1. Introduction
Single Ended triode tube amplifiers are not that hard to find anymore. You can buy them from many companies or you can build one with parts that are offered by dozens of suppliers. The high-end audio press has been talking about them for the past several years and it is very strange that something [...]

This loudspeaker, which I ended up calling STYLE, was originally designed because I needed a small speaker that would play with my 300B SE amplifier. One of the areas where SE amplifiers excel is in the small details and the decay of the sounds. Sometimes this can be appreciated even better in small rooms at [...]

Please allow me to back up and start at the beginning. The person who truly invented surround sound is a man named Peter Scheiber back in the late seventies.
At that time, Dolby Labs leased Peter Scheiber’s patent for use in theaters. Dolby claimed it was theirs, but still pays royalties to Mr. Scheiber.

It’s possible to get most of the Thiele-Small parameters
from a loudspeaker by just accurately measuring the impedance
versus frequency. If this is done twice, one with the driver in open
air and one with an added (known) mass it should be fairly easy
to calculate the fs, Vas and Qt.

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