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 > Quiet series generator 9500 watts!!!

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FWC

The Wilderness

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Posted: 06/06/21 11:39am Link  |  Quote  |  Print  |  Notify Moderator

Boon Docker wrote:

10-30 times louder?
Someone needs to read up about the db scale. [emoticon]


Seems that some folks do.

An increase of X db = 10^(X/10) increase in sound. Honda rates their generator at 52 - 57 dB.. At 52dB the Honda is 15 dB quieter, which is 10^(15/10) = 10^1.5 = 31.6 times quieter. At 57 dB, it would be 10^(10/10) = 10^1 = 10 times quieter. Now human hearing may not be linear, but that is how much noise the generator is producing. Any way you look at it, 10-15 dB is a huge difference in noise.

Boon Docker

Mountain Foothills of Southern Alberta

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Posted: 06/06/21 11:48am Link  |  Quote  |  Print  |  Notify Moderator

^^ That's funny, 31.6 times quieter.

FWC

The Wilderness

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Posted: 06/06/21 11:51am Link  |  Quote  |  Print  |  Notify Moderator

Or 31.6 times louder, however you want to spin it. It appears that 67dB is also the minimum noise level for the Predator, which would imply it is louder under load.

Boon Docker

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Posted: 06/06/21 12:01pm Link  |  Quote  |  Print  |  Notify Moderator

Here is a visual for the people that can't grasp the concept. [emoticon]

[image]

frankwp

Calgary, AB, Canada

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Posted: 06/06/21 01:24pm Link  |  Quote  |  Print  |  Notify Moderator

GDS-3950BH wrote:

Boon Docker wrote:

GDS-3950BH wrote:

Boon Docker wrote:

10-30 times louder?
Someone needs to read up about the db scale. [emoticon]


He references the Honda which is listed 59 dB, since the power doubles for every 3 dB of gain, 62 dB is double the racket of the Honda, 65 dB is double the 62, 67 is almost double of the 65. That's **** close to 10 times louder. The difference between a quiet conversation and having a hoover exhaust stuck in your ear. Does anyone really give a ratsass?


No quite.
Twice the perceived loudness is a 10 db increase.


Maybe on Fantasy Island, but whatever you say.


Fantasy Island, along with the rest of the world. A 10 db increase is 10X the power, but we, as humans only perceive that as being 2X as loud. Do some reading up on the subject, it's quite fascinating & goes against a lot of common understanding of the subject.

But all that aside, 67 db is way too loud for a campground. Campers 10 sites away would complain, I'm sure.


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Dutch_12078

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Posted: 06/06/21 03:12pm Link  |  Quote  |  Print  |  Notify Moderator

GDS-3950BH wrote:

Dutch_12078 wrote:



How would you know if a ranger is checking sound levels in response to a complaint? Sound level meters are readily available as smartphone apps.


I'd know because in 30+ years I've never seen nor heard about any NPS personel checking generators or anything else with a db meter. They might say "it's too loud" based on what they hear, but come on man, a dB meter? That's just forum drama. In that case if it ever did happen, it had better be a certified, calibrated meter, and not some phone app. What if someone is cited and shows up at the hearing to dispute the charge. More drama.


I make no claim to have visited every NPS camping facility, so I certainly wouldn't base any claims on what happens at the locations I haven't been to or when I'm not there. My point was simply that the NPS does have a 60 dB(A) sound level regulation, and the mentioned generator doesn't come close to meeting that requirement. Just how they might measure the level is irrelevant, since I don't recall NPS personnel routinely carrying tape measures to check the 50 foot measurement requirement either.


Dutch
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TravelinDog

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Posted: 06/06/21 04:06pm Link  |  Quote  |  Print  |  Notify Moderator

No thanks. Another made in china piece of garbage from harbor freight.
At that price you could do better.

pianotuna

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Posted: 06/06/21 05:09pm Link  |  Quote  |  Print  |  Notify Moderator

TravelinDog wrote:

No thanks. Another made in china piece of garbage from harbor freight.
At that price you could do better.


Do share a link to the "better"?


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

bikendan

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Posted: 06/07/21 03:22am Link  |  Quote  |  Print  |  Notify Moderator

TravelinDog wrote:

No thanks. Another made in china piece of garbage from harbor freight.
At that price you could do better.


other than Honda or Yamaha, what other inverter generators, at that price, are not made in China?
i spent a whole day next to the HF Predator 3500w inverter generator and i was very impressed. And i own a very quiet Honda 2000i.


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bucky

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Posted: 06/07/21 03:35am Link  |  Quote  |  Print  |  Notify Moderator

67 db is a local food truck loud. You have to text your order to the guy because you can't hear each other.


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