Quote:
Originally Posted by janneman
Hi Ed,
Vol 2 will be out on the streets 1 September. You will get a heads-up before that.
Did you send me email that I haven't answered? I'm not aware of that.
jan
|
And yes! Volume 2 is out on the streets!
Again, the articles my authors have written are nothing short of fantastic. There is so much ingenious circuit design, great insight and incredible creativity around that we are often not aware of! It's a great privilege to work work with those personalities to bring out another great tech audio bookzine.
A short overview:
Bob Cordell is back with a very high quality KT-88-based tube power amplifier, based on the design that gpot lots of kudo's at a RMAF workshop.
Rudolf Moers goes on an ultra-linear adventure. If there was ever anything you wanted to know about the design, advantages and trade-offs in ultra-linear tube power amps, this article will surely answer it.
On the solid-state front, Kendall Castor-Perry designed a novel and ingenious gain-of-one power output stage that needs no adjustments or thermal compensation yet is extremely linear, even open loop. Our friend from Switzerland, Samuel Groner, came up with an equally high-performance push-pull transimpedance stage that could drive Kendall’s output stage, or any other, for that matter.
Nelson Pass has a sequel to the Arch Nemesis, transplanting the SiC power device with a custom-designed Static Induction Transistor, the Pass SIT 1.
Marcel van de Gevel describes a simple loudspeaker correction filter that gets away with standard value capacitors and a simple gain-of-one buffer amp as the active element.
EUVL, inspired by designs from Nelson Pass, Marshall Leach and others presents a minimalistic I/V converter for current output DACs based on jFETs and a floating power supply.
Stuart Yaniger shares with us some interesting insights and experiences related to controlled listening tests.
Last but surely not least, Gary Galo’s Guest Editorial provides a thought-provoking insight into the history, development and current state of digital audio.
There are also two book reviews: Rudolf Moer’s Fundamental Amplifier Techniques with Electron Tubes is reviewed by Guido Tent, while Kendall Castor-Perry gives his views on Douglas Self’s latest work The Design of Active Crossovers.
Several of you asked for designs that they could also build if they wanted. And yes, there are several in V2 that can easily function as a construction project. Bob Cordell has identified a current production output transformer for his design. The output stage of Kendall could be mated with Samuel’s push-pull transimpedance stage to form a novel, very high performance power amp, although you should be prepared for some real-world fine tuning.
EUVL even plans to provide some kits with PCBs and jFETs for his I/V converter through his account at diyaudio.com.
I hope you again enjoy reading this Volume; and if you have any comments, let me know.
But don’t forget to listen to your music!
jan didden
