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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 112

$39.00
$39.00

$39.00
$39.00

9784880735146

Details

Language: Japanese
Release date: April 30, 2024
Specifications: B5 size, 186 pages
ISBN: 9784880735146


The opening feature of the Spring 2024 issue of "Tube Kingdom" No. 112 is "Listen to the power of vacuum tube amplifiers". How does the energy of sound unique to vacuum tubes add appeal to music reproduction? We will listen to vacuum tube amplifiers that ensure an output level of 20W in the "directly heated tube edition" such as the 300B and 211 output tubes, and the "multi-electrode tube edition" such as the KT series tubes. The "Experimental Workshop" project of each issue will develop "The wonderful sound of vacuum tube headphone amplifiers". How can vacuum tubes enhance the appeal of headphone reproduction? We will listen to 10 models and suggest how to use them.

The focus project on vintage machines is "Build a 2-way with JBL and Altec units". We will explore how to use a 2-way network with a combination of a woofer and a driver + horn to bring together the sound even when the unit brands are mixed. In terms of analog, we compared the Westrex 10A, which was the standard playback cartridge for cutting systems in the early days of stereo LP records, with its reproduction, the Klang Kunst 10A (KK10). The sound was stunning. Issue 112 is also full of must-read features for fans of vacuum tubes and analog.

(Translated from the Stereo Sound online catalog)

Tube Kingdom 112
Tube Kingdom 112
Tube Kingdom 112
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