Deck Box as a Generator Quiet Box?

jamesroadking wrote:
... the noise isn't that bad, and no worse than sitting next to a semi truck idling next to you all night long.

Now that's a goal to aspire to. :E

We only use the generator when we're park by ourself in remote areas.

Thank goodness. :W

I had a Champion 3500/4000 watt since 2012 and a Work and Play 30 foot toy hauling trailer that I pull with a F250. Here's what I've found, the generator is listed as 68 decibels, the muffler is pretty good, but about half of the noise actually is just mechanical engine noises. I put the generator in the bed of the truck, on a heavy piece of carpet, have a six inch fan that claps on to the generators frame and is plugged into one of the 115 outlet blowing air on to the generator's engine cylinder head, then I have a three foot, 90 degree exhaust pipe extension that routes the exhaust up and out of the bed of the truck. A tonneau covers the entire truck bed, I just open the tailgate, clip on the exhaust pipe extension, open the fuel valve, plug in the 30 amp cord and hit the starter button. Wait a few minutes then close the breakers inside the trailer. The 30 amp cord is long enough to reach the trailer's power receptacle, I also have an extension 30 amp cord if I want to move the truck further away from the trailer. With the generator sitting on heavy carpet, a tonneau cover covering the generator, a fan blowing air on the engine for extra cooling, with just the tail gate open, I can run it even if it raining. The noise isn't that bad, no worse than sitting next to a semi truck idling next to you all night long at a truck stop or a Walmart.
We only use the generator when we're parked out by ourselves in remote areas.

P.S. The generator only cost $249.

According to some reviews, some of these boxes will NOT come apart once assembled. I wonder if a box, laid on its side, with the top open and genny sitting inside (on the inside of the side where the hinges are) would baffle sound and direct part of the sound in a direction away from where people are. If you want to close your deck box, you're going to have to ventilate it, and allow a way to get the exhaust out. You could carry loose stuff in that box then use it for the genny once on site, but it's gonna be a "dedicated" box.

It is not stiff enough to work well. Spending an equal sum of money on a better muffler for the engine would be more effective, I suspect, though still not make the generator especially quiet. (I am assuming this is not an inverter generator. I'm not aware of Champion making one of that rating.)

Any box on it's own will be shockingly ineffective at reducing genset noise. You also can't just stick any genset in a box without considering how you're going to intake fresh cooling air and exhaust both hot cooling air & hot exhaust gases. Unfortunately that Champ is of the size and shape that makes this a challenge but perhaps you'll get some ideas by examining pics & videos of my own Honda EU2000i quiet box which are in my gallery, near the end.