Скачать с ютуб Chinese Diesel Air Heaters - Part 2 - 5KW Bench Test в хорошем качестве

Chinese Diesel Air Heaters - Part 2 - 5KW Bench Test

Bench Test 5KW Chinese Diesel Air Heater With reference to the dB sound levels in this video. I use 10 dB as doubling of sound. I have some comments it should be 3dB. From my education days long ago +3dB is twice as much POWER. The smallest difference in level that most people easily perceive is about 3dB. But to double the apparent loudness (not power) perceived by the human ear is more like 10dB to the average person. I think by definition 1 db is the smallest difference for most people whereas 3db is quite noticeable. But I am not a sound expert and I am willing to be corrected. JMcK Disclaimer. Any advice or suggestions I may give is derived from published manuals and my own experience and detailed private testing. You must do your own independent research to see if my advice and suggestions are right for you and your instillation. JMcK