How loud are 2?

[mamasmax]

I have a question about generators I haven't seen addressed before. My wife seems intent on getting a genny " just in case" and while I don't want to spend the money I want to do it right. Meaning enough power to run the 15k AC. And QUIET! My question is if I bought 2 generators to run in parallel that are rated at, say, 55 decibels each and ran them both at the same time would the total noise level still be 55 decibels? 60 decibels? 110? (kidding). Or maybe the noise level would be the same yet twice as annoying?

[ChuckV1]

SO why not just buy a Honda EU 6500i or the new EU7000i and be done
with it, yes they are not light but will handle the 15btu a/c no
problem in ECO mode on along with Microwave, lights and coffee make
all running.

I carry my EU6500i in the front of the bed of my truck without any
problems and have an extra 25ft cord if I need it. The last outing
I had the truck parked side of the 5th wheel with the EU6500i
running side of the window which was closed and could hardly hear
it and the DW didn't complain about noise

[WILDEBILL308]

What about 3 dogs, one only barking part time?
"From my experience, the sound level of two paralleled EU2000i's operating continuously with the ECO mode off (under heavy load) is bordering on the same overall loudness as some of the quieter, 3000-4000 watt synchronous generators running the same load."
But how loud is that? Is it as quiet as my 7500 Quiet Diesel running at light load or at full load?
Bill

[otrfun]

Ductape wrote:
We have a pair of Hondas and I can state from experience that 2 running the a/c in parallel is a lot easier on the ears than 1 running flat out.

Agreed, as long as you're able to run the two paralleled EU2000i's with the ECO mode on. There are some 13.5k and 15k a/c's with very high LRA's that two paralleled EU2000i's will not start/run with the ECO mode on. In these situations one may be forced to use two paralleled EU2000i's with the ECO mode off. From my experience, the sound level of two paralleled EU2000i's operating continuously with the ECO mode off (under heavy load) is bordering on the same overall loudness as some of the quieter, 3000-4000 watt synchronous generators running the same load.

[Ductape]

We have a pair of Hondas and I can state from experience that 2 running the a/c in parallel is a lot easier on the ears than 1 running flat out.

[TXiceman]

We have two Honda EU2000i with the parallel cable. If we are not needing to run one A/C unit, we can run just one to power fans, microwave, charge batteries. If we want the A/C, I parallel the two Hondas.

So go ahead and get a pair of Hondas or Yamahas.

Ken

[Oldme]

Still 55db.

Just like running two amps
the output does not add together.

http://www.gcaudio.com/resources/howtos/loudness.html

[Golden_HVAC]

mamasmax wrote:
I have a question about generators I haven't seen addressed before. My wife seems intent on getting a genny " just in case" and while I don't want to spend the money I want to do it right. Meaning enough power to run the 15k AC. And QUIET! My question is if I bought 2 generators to run in parallel that are rated at, say, 55 decibels each and ran them both at the same time would the total noise level still be 55 decibels? 60 decibels? 110? (kidding). Or maybe the noise level would be the same yet twice as annoying?

Yes it will be twice as annoying!



That said, the generators are really quiet, so twice of almost nothing is still nothing. Each will be 55 Db, and the total should still be less than 57 db.

You should be fine.

Fred.

[bfast54]

for what it's worth I did a test couple years ago with a nother camper

we set up his Two Honda eu2000i and we set up my Honda EU3000is
my 3000 with autothrottle off was slightly less noise than his two 2000 with EcoBoost Auto throttle on
when I turned my ego boost Auto throttle on you had to get way close to mine to hear mine over his Two...
And My3000 runs my A C just fine.....but,is heavier...but runs longer on tank of fuel, etc.........:W

[NinerBikes]

Get 2 wives, run them 180 out of phase and will they cancel each other out too? That screeching has kept me from the altar for life.

[Pipeman]

Well I'm sure I will find out as I have just bought the companion model and the regular model, that will run in parallel. They were bought in the States. The extended run tank is on route as we speak. Haven't used them yet but will, come the Canadian Thanksgiving. My Juice Box Onan, connected to the hitch on the back of the 5er isn't too bad for noise and it's for sale, but the 2 Honda's will be a lot less weight to move around. Owned a Honda 3000 and it was nice and quiet.

[time2roll]

I am thinking 2 at 50% might be a lower tone than 1 running flat out.
Just in case is more like find some hookups.

[byronlj]

It would never be louder than 55db. If they were out of phase noise wise, noise could decrease by canceling each others sound waves, but not likely.
Dave

[2oldman]

mamasmax wrote:
if I bought 2 generators to run in parallel that are rated at, say, 55 decibels each and ran them both at the same time would the total noise level still be 55 decibels?

No. I have 2 Honda 2ks in parallel for running air, and it seems the sound is noticeably louder, but nothing horrible.

It's certainly quieter than trying to run air on one, which is screaming!

[Gene_Ginny]

... and with 2 you get stereo. :C

If you could get the sound waves 180 degrees out of phase they would cancel and it would be 0 DBa.