Boon Docker wrote:
Champion 3500 - 59db
That's not "the cheap Champion" generator. That's their newer inverter model. $1,299.99 at Camping World, Overtons, Gander Mountain, etc.
That's as much as the Yamaha 3000W model:
https://www.cabelas.com/product/YAMAHA-PORTABLE-GENERATORS/2185876.uts?productVariantId=4397801&WT.tsrc=PPC&WT.mc_id=GoogleProductAds&WT.z_mc_id1=04309379&rid=20&ds_rl=1246525&ds_rl=1246528&ds_rl=1247879&ds_rl=1252079&gclid=EAIaIQobChMI1MGD4aOW4AIVOv_jBx1YIwwkEAQYASABEgJB6PD_BwE&gclsrc=aw.ds "Smart Throttleâ„¢ automatically adjusts engine speed to match the electrical load required, resulting in quieter operation and greater fuel efficiency."
The inverter model Champion IS much quieter than their standard 3500, but there are some caveats. The Yamaha (and Honda) run only as fast as the load demands. The speed is variable. According to the owner's manual on the Champion,
The Economy Control switch can be activated in order to minimize fuel consumption and noise while operating the unit during times of reduced electrical output, allowing the engine speed to idle during periods of non-use. The engine speed returns to normal when an electrical load is connected. When the economy switch is off, the engine runs at normal speed continuously.So when the load is applied, it runs at "normal speed". That's the equivalent of full load on the variable speed Yamaha and Honda. That's a very noticeable difference between 53 dB (no load - 1/4 load), and 58 dB (full load) on the Yamaha. Most of the time, I run it well below full load, even when running the 13,500 BTU roof top A/C unit.
Here's what it takes to start my Dometic A/C:
It takes a specialized meter to capture the "in rush" current. A standard meter, or Kill-A-Watt, is far too slow.
Compare that to the running current:
This is why the Honda 2KW can't reliably start, or restart the A/C unit when there's a head pressure on it. The Yamaha 2.4KW generator has the same sized engine as their 2800W, and 3000W generators (at least the models at same time of production), giving it the ability to handle the same start up spike as the larger models.
During previous hurricanes, I used the Yamaha to run a 5000 BTU window A/C in our home. That was just under 5A, which kept the generator at idle, 53 dB. The Champion would have been at 59 dB, 4x the sound energy. Huge difference? No, but definitely noticeable. And with the 3500W inverter Champion generator being near the price range of some Yamaha and Honda models, you're not getting an equivalent product. Even my 1980s era Craftsman generator had the built-in idle feature:
The idle feature was almost useless to me since any load would cause it to run full speed (same method according to Champion owner's manual). If I didn't need it to operate, no need to leave it idling.
It doesn't matter to me what anyone buys, but since questions were asked, I'm pointing out differences. Do your research, and if possible, go take a listen to one in person.