John Deere cab noise - Page 2 - The Combine Forum
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post #11 of 18 (permalink) Old 05-27-2019, 06:21 AM
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S.................................

Sprayers might be the loudest though. Did a noise test on our 4930 climbing a hill the other day. Only 77dB but it's the hydro whine that kills you.

Good to know since I just signed up for one but not yet delivered hahaha
But we're not in hilly country so hopefully will be okay.

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post #12 of 18 (permalink) Old 05-27-2019, 08:17 AM
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Sprayers might be the loudest though. Did a noise test on our 4930 climbing a hill the other day. Only 77dB but it's the hydro whine that kills you.
No way only 77, no way.
My kenworth at idle is 77 and spending a day in there is no sweat. A 4930 is pretty much ridiculous!
I was surprised. I was sure it was going to be mid 80s. I wear noise canceling headphones in it. But I just use one of those apps on my phone. Don't think I had my case off. Wonder how much difference that would make

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post #13 of 18 (permalink) Old 05-27-2019, 08:30 AM
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I just use one of those apps on my phone.
Those noise measuring apps might be ok to compare one unit to another but I question their actual accuracy.
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post #14 of 18 (permalink) Old 05-28-2019, 10:58 PM
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Yes they are on the laptop, ill get it in the morning its updating now as always.
You can buy dynamat on amazon, and under the hood is different its heat and fire resistant more, i bought it through our deere dealer, it is used in trucking industry under the hoods.
Curious if you found those pics? Wondering what you did under the hood more than anything
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post #15 of 18 (permalink) Old 05-28-2019, 11:42 PM
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Using the app on my phone I get 86 decibel +- in my 4830. If you think that's loud, try spraying with the door open or, better yet, with no windshield. THATS LOUD.
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post #16 of 18 (permalink) Old 05-29-2019, 12:14 AM
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can't find picture of the decibel app i'll keep looking,
on a side note why is the canola looking so purple thinking its the seed treatment but could also be some fert (dribbled 40 gallon fo 28-0-0) on the canola.
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post #17 of 18 (permalink) Old 05-29-2019, 12:16 AM
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found it
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post #18 of 18 (permalink) Old 05-29-2019, 12:23 AM
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If you want the full fonished picture ill have to take it from sprayer tomorrow, the dynamat in cab really reduced the hydro wine, have a friend in saskatchewant that drove with me in our 4830 and he has one too couldnt believe the difference it made
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