Quiet series generator 9500 watts!!!

[pianotuna]

Hi all,

Yes, it is Harbor Freight--but the price is about the same as Honda or Yamaha 2800 watt units!

https://www.harborfreight.com/9500-watt-super-quiet-inverter-generator-with-co-secure-technology-570...

[frankwp]

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. :B

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.

[Boon_Docker]

Here is a visual for the people that can't grasp the concept. :B

[FWC]

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]

^^ That's funny, 31.6 times quieter.

[FWC]

Boon Docker wrote:
10-30 times louder?
Someone needs to read up about the db scale. :B

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]

Yep, Fantasy Island and also one other place. :B

[2oldman]

GDS-3950BH wrote:
Maybe on Fantasy Island, but whatever you say.

It's also what reference material says.

[GDS-3950BH]

Boon Docker wrote:

GDS-3950BH wrote:

Boon Docker wrote:
10-30 times louder?
Someone needs to read up about the db scale. :B

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.

[2oldman]

"An increase of 3dB doubles the sound intensity but a 10dB increase is required before a sound is perceived to be twice as loud."

It is confusing.

[Boon_Docker]

GDS-3950BH wrote:

Boon Docker wrote:
10-30 times louder?
Someone needs to read up about the db scale. :B

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.

[GDS-3950BH]

Boon Docker wrote:
10-30 times louder?
Someone needs to read up about the db scale. :B

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?

Hazard Fraught advertises it as super quiet and it may be, when compared to a 737 at takeoff.

[Boon_Docker]

10-30 times louder?
Someone needs to read up about the db scale. :B

[GDS-3950BH]

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.

[FWC]

Lwiddis wrote:
Only 67 dB? Pretty good.

That is 10-30 times louder than the equivalent Honda offering. This is way too loud to use in a campground or within 1/4 mile of another camper.

[Dutch_12078]

GDS-3950BH wrote:

Dutch_12078 wrote:
For sound level reference, the National Park Service requirement is 60 dB(A) or less at 50 feet for motorized equipment including generators.

I have yet to see a ranger at a NP or anywhere else going around with a decibel meter.


67 decibels would tend to piss off quite a lot of folks in a campground. The scale is not linear.

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 have known rangers to warn people with noisy generators, although I don't think they needed a meter to tell they were too loud...