Linear Audio Vol 13: Volume 13

Linear Audio Vol 13 is the 14th issue of a series of printed bookzines dedicated to technical audio and perception.

Editorial
Your Editor reflects on 14 issues, 2 books and 7 years and concludes It’s been a great adventure!

Tutorial
Burkhard Vogel, not content with his already immense knowledge of all things noise, finds time for Challenging BJT Noise.

Circuit design
Marcel van de Gevel thought it was time that in The valve DAC - Submicron silicon meets submillimetre vacuum.
After several theoretical installments, Giovanni Stochino puts his money where his mouth is and gives us an Audio power amplifier with BEF error correction delivers 150W into 8 ohms at 0.0004% THD.
Our friend Rudolf Moers is back with An investigation of the screen grid tap - a search for the hidden arguments.
Ian Hegglun is has another out-of-the-box power amp design as only he can do, with a Current driven Output-stage class AB power amplifier.

Test and Measurement
With two heavy-hitters like Samuel Groner and Bruno Putzeys teaming up, Reed Relay Distortion gets unraveled and exposed.
John Vanderkooy and Richard Mann joined forces to come up with An Open-Source Electroacoustic Measurement System: Part 1: Theory, Practicalities and Acoustic Examples; Part 2: Sound Card Setup, System Characterization and a few more examples.

Loudspeaker Design
If you want your speakers to sound the same on-axis as off-axis, you need The Axis Equalizer, says Jeff Macaulay

Enjoy another article-packed issue!

Jan Didden Publisher/Managing Editor