3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
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+ On the (logarithmic) dB scale for spl 10dB is a doubling of loudness. A 3dB difference is a change in loudness
Not quite (good pun!)
One db up is a 26% increase. If zero dB is equal to 1,000 microvolts, an increase to +1 dB is 1,260 microvolts. Another 1 dB increase is 26% of 1,260 is 328. Add that to 1,260 and we have 1,580 microvolts. Multiply that by 26% and we get 410. Add that to 1,580 and the sum is 1,990 (rounded to 2,000 microvolts). 2,000 microvolts is DOUBLE 1,000 microvolts. Thus, an increase of +3dB is in fact double.
Yep, I missed the one on Paul Cole. I guess I should have looked at the senders profile before I "assumed" it was Paul generating the message. Hey, I'm an old man - I'm allowed to make mistakes every now and then!
And for Curly 2001 - yes the muffler is a spark arrestor type. The Jiang Dong units are both NPS and EPA certified (or so the importer's web site claims).
