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History | Equitech
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NOISE MAY BE THE MOST MISUNDERSTOOD PROBLEM in any professional audio or video facility. Today’s recording technology offers unsurpassed quality and accuracy, yet grounding system noise still baffles the experts.
More relevant to modern audio and video production is AC noise that is created locally by equipment power supplies and other impedance type loads within the studio. Most people don’t understand that there is a dynamic relationship that exists between the AC voltage phase, an impedance load, harmonic power distortion and objectionable RF program-signal noise. Conventional beliefs state that the causes of noise stem from the way a studio is grounded, however the problem is deeply rooted in the background of the electrical industry and modern electrical power distribution standards.
SUCCESS, AT LAST
Understandably, such a simple explanation of noise problems can invoke a kind of knee jerk skepticism or denial. But, requiring proof is not an unreasonable demand. In locations using balanced 120-volt power systems, the results speak for themselves. When balanced power is applied systemwide, the results are often quite dramatic. On the average, 16dB improvement in background noise has been noted. Where audio and video components are properly installed and maintained, in no known case has balanced AC failed to substantially lower the noise floor. In high-end systems utilizing 24-bit digital equipment, peripheral gear needs balanced power to approach the noise floor capabilities of the digital system.
Not long ago, a well known audio dealer was checking some class-A tube gear before shipping the exhibit off to the Audio Engineering Society Convention. With several amps on the bench, he was resigned to spending six hours changing capacitors to clean up some hum problems. As fate would have it, a delivery arrived at that moment with two prototype 120-volt symmetrical power systems he had ordered for the show. Predictably, and nonetheless miraculously, the balanced 120-volt power systems rendered the hum inaudible saving the fellow some capacitors and hours of work.
White Papers | Equitech
Index of Technical Articles About Balanced Power
History | Equitech
Ett lite utdrag fra linken
NOISE MAY BE THE MOST MISUNDERSTOOD PROBLEM in any professional audio or video facility. Today’s recording technology offers unsurpassed quality and accuracy, yet grounding system noise still baffles the experts.
More relevant to modern audio and video production is AC noise that is created locally by equipment power supplies and other impedance type loads within the studio. Most people don’t understand that there is a dynamic relationship that exists between the AC voltage phase, an impedance load, harmonic power distortion and objectionable RF program-signal noise. Conventional beliefs state that the causes of noise stem from the way a studio is grounded, however the problem is deeply rooted in the background of the electrical industry and modern electrical power distribution standards.
SUCCESS, AT LAST
Understandably, such a simple explanation of noise problems can invoke a kind of knee jerk skepticism or denial. But, requiring proof is not an unreasonable demand. In locations using balanced 120-volt power systems, the results speak for themselves. When balanced power is applied systemwide, the results are often quite dramatic. On the average, 16dB improvement in background noise has been noted. Where audio and video components are properly installed and maintained, in no known case has balanced AC failed to substantially lower the noise floor. In high-end systems utilizing 24-bit digital equipment, peripheral gear needs balanced power to approach the noise floor capabilities of the digital system.
Not long ago, a well known audio dealer was checking some class-A tube gear before shipping the exhibit off to the Audio Engineering Society Convention. With several amps on the bench, he was resigned to spending six hours changing capacitors to clean up some hum problems. As fate would have it, a delivery arrived at that moment with two prototype 120-volt symmetrical power systems he had ordered for the show. Predictably, and nonetheless miraculously, the balanced 120-volt power systems rendered the hum inaudible saving the fellow some capacitors and hours of work.
White Papers | Equitech
Index of Technical Articles About Balanced Power