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OJAS is the creative pen name of Devon Turnbull. As a university student studying Audio Engineering he started using the name across a variety of disciplines including graffiti, music, graphic design and clothing design. In 2003 Turnbull co-founded the clothing brand Nom de Guerre with Isa Saalabi, Wil Whitney and Holly Harnsongkram. For the next decade, while primarily working in fashion, the name OJAS was kept alive on sound sculptures Turnbull was crafting for himself and a growing number of audio enthusiasts around the world. With a particular interest in high efficiency speakers and low powered tube amplifiers, Ojas audio equipment aims to bring realistic, natural sound to the listener. These products are the result of two decades of experimentation, engineering and explorations in the audio underground.
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The Nature of Sound


Sound is considered to be of two kinds, one a vibration of ether the other a vibration of air.
The vibration of ether which cannot be perceived in the physical sense, is considered the principle of all manifestation the basis of all substance the “music of the spheres” it forms permanent numerical patterns which are the basis of the worlds existence, this kind of vibration is not caused by physical shock as are audible sounds. It is therefore called anahata “unstruck”, the other kind of sound is an impermanent vibration of air, an image of the ether vibration. It is audible and always produced by a shock. It is therefore called ahata or “struck”.
Struck sound is said to give pleasure. Unstruck sound leads to liberation (Narada Purana).
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Tube Kingdom 113

$39.00
$39.00

$39.00
$39.00

9784880735221

Details

Language: Japanese
Release date: July 30, 2024
Specifications: B5 size, 186 pages
ISBN: 9784880735221

Tube Kingdom is a quarterly magazine that pursues the charm of vacuum tubes and analog sound. The Summer 2024 issue / Issue 113 takes a wide-angle look at the charm of vacuum tube amplifiers and vintage audio. The theme of the serial "Experimental Workshop" is "Listening to EL34 / 6L6 / KT66 with the vintage Dynaco STEREO70". We will explore the charm of the circuit and sound by replacing the output tubes in the Dynaco STEREO70 (ST70), an easy-to-obtain vintage American vacuum tube power amplifier. The opening feature is "The vivid sound of tube preamps". This preamp is located near the front of the audio system and is effective in creating the overall sound, and we will report on the diverse sound characteristics unique to vacuum tubes.

The focus project on vintage audio is "Driving JBL 2-way with a vintage amplifier combination". We will pursue sound creation by driving a 2-way JBL woofer / driver + horn with a combination of low-frequency / mid-high-frequency amplifiers with a mixed brand / output tube type / circuit configuration. A new series, "Tube Amplifiers for Blues," has also started. Masaki Hayashi, whose guide to building vacuum tube guitar amplifiers is easy to read even for "very beginners," writes about building a vacuum tube amplifier for listening to low-down blues for playing and singing.

(Translated from the Stereo Sound online catalog)

Tube Kingdom 113
Tube Kingdom 113
Tube Kingdom 113
Tube Kingdom 113
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