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Half wave rectification from devices within the home such as older hair dryers causes DC offset. It can also be caused by industrial devices outside the home that load the power line unevenly.
The typical observed effect is transformer buzzing and ‘growling’ due to saturation of the magnetic core. Larger transformers, often found in amplifiers, are more susceptible than smaller.

"I could not be happier!" ~ A.S
This case study highlights how Acoustic Frontiers engineered a high-performance home recording studio capable of supporting DJ performance, electronic production, mixing, and mastering—without compromising accuracy or workflow.
Learn how early home theater design, layout, and acoustic treatment improve performance in new home construction.

Nyal Mellor, Founder, Acoustic Frontiers
Nyal Mellor
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