It can generate a constant 15 Hz sine wave tone at 140 dB for 24 hours a day, seven days a week with extremely low harmonic distortion. The subwoofer has a flat frequency response from 15 to 80 Hz, and is down 3 dB at 12 Hz. It can generate a constant 15 Hz sine … Read more
Ancient musical scales vibe with nature. SOURCE “Forgotten In Time: The Ancient Solfeggio Frequencies” is a title often associated with a concept in alternative healing and esoteric spirituality. It refers to the idea that certain specific sound frequencies, known as the Solfeggio frequencies, have ancient origins and possess healing properties. The Solfeggio frequencies … Read more
SOURCE Auditory perception of nonlinear distortion is a fascinating area within psychoacoustics, the branch of psychology concerned with the scientific study of hearing. Nonlinear distortion occurs when an audio system (such as speakers, amplifiers, or headphones) introduces harmonics that were not present in the original signal, often as a result of the system being … Read more
Technical information. Substitutions, notes. http://milbert.com/articles#12ax7 The 12AX7 is a miniature dual triode vacuum tube, also known as an electron valve, that has played a significant role in the development of electronic equipment, particularly in audio applications. Introduced in the late 1940s by RCA (Radio Corporation of America), the 12AX7 was designed for use in … Read more
The possibly unexpected importance of extreme detail in musical excellence. Research paper from Menno van der Veen, 122nd AES in Vienna, Austria, May 2007 ( PDF, archive ) — Summarily paraphrased: Failing to accurately transfer fine details at low levels, traditional audio output transformers nonlinearly mask the naturalness and purity of music played through them. SOURCE … Read more
A major cause of audible, non-linear distortions in capacitors By Menno ven der Veen: “We have discovered a major cause of nonlinear distortion in capacitors and we have shown that this effect can create significant -and thus audible- distortions in sound signals…this effect can introduce high levels of intermodulation distortion and thus lead to audible … Read more
Extensive information presented by University of South Wales. SOURCE A decibel (dB) is a unit of measurement used to quantify the intensity or level of sound, as well as other quantities such as power, voltage, and pressure. The decibel scale is logarithmic, which means that each increase of 10 dB represents a tenfold … Read more
Languages were perhaps once ‘sung’. By Daniel Arthur – “Ancient alphabets were constructed by using visual symbols to represent sounds. Ancient sacred architecture was constructed to send and receive those sounds to and from the gods. Because of that, ancient languages, like Egyptian, Hebrew and Greek were more poetic and musical than our own, with … Read more
Over 90 tube amp topologies examined, further evidence of how audio output transformers inescapably present limitations and compromises. Menno Van der Veen presented at 118th AES a paper detailing a universal audio output transformer system that “includes all possible variations in topologies. The system contains 90 variations (at least) and some of them have never … Read more