My wife just turns off the hearing aids 
Soundproofing
Hotshot
Joined: Feb 2009
Posts: 10,410
Likes: 77
From: Plankinton, SD
I'm pretty sure mine would rank right up top with the loudest ones right now. That's why I'm going to put a muffler and do a little of Glenn's handiwork on mine this winter. I plan to take a before and after sound on mine, if I remember to, inside and out. Probably just in park though, not driving.
Posting Guru
Joined: Oct 2011
Posts: 1,647
Likes: 1
From: Exton, PA
Hey - I just found the decibel meter I had previously and installed it again. It has a nice new feature that let's you take a picture with the current decibel reading overlayed. Perfect for shots of the guage cluster while driving ;-)
For others who have an iPhone, if we all download the same app, we could try to compare readings. I bet each phone wouldn't vary more tha 5% one to another.
To get the app just search Decibel in the App Store. It's the one by David Bannach and is free.
For others who have an iPhone, if we all download the same app, we could try to compare readings. I bet each phone wouldn't vary more tha 5% one to another.
To get the app just search Decibel in the App Store. It's the one by David Bannach and is free.
Thread Starter
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Fleet Owner
Joined: Aug 2004
Posts: 20,422
Likes: 197
From: AZ
I hope I don't turn out to be the loudest, LOL It would be nice to be the lowest.
I'll have to look for that app JP. Decibel is the search I used earlier but didn't take the time to go thru them and check ratings, etc.
I'll have to look for that app JP. Decibel is the search I used earlier but didn't take the time to go thru them and check ratings, etc.
Fleet Mechanic
Joined: Oct 2006
Posts: 1,386
Likes: 1
From: Spokane, WA
Now i'm thinkiin that just might work, at first I thought it couldn't work cause there is just to many different smart phones out there. Most everyone must know somebody with and iphone Your thought of a pic of the instrument cluster is good too cause the speed and rps could be verified.
Posting Guru
Joined: Oct 2011
Posts: 1,647
Likes: 1
From: Exton, PA
You can also take a pic of the wife/gf and the look on her face relative to the decibel level :-)
On a serious note, though - one thing to be careful of is not to cover the microphone with your hand while taking the pic.
I'll see if I can get one on the way in to work tomorrow and post it.
On a serious note, though - one thing to be careful of is not to cover the microphone with your hand while taking the pic.
I'll see if I can get one on the way in to work tomorrow and post it.
Hotshot
Joined: Feb 2009
Posts: 10,410
Likes: 77
From: Plankinton, SD
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Posting Guru
Joined: Oct 2011
Posts: 1,647
Likes: 1
From: Exton, PA
agreed, but relative readings on the some phone would still be comparable, i'd think. I took some readings on the way into work today and will upload shortly...
and for the record, I do not actually want to have/carry this iphone but was provided it by work and expected to keep it on me at all times (within reason, I suppose). so I might as well get some use out of it, I guess.
and for the record, I do not actually want to have/carry this iphone but was provided it by work and expected to keep it on me at all times (within reason, I suppose). so I might as well get some use out of it, I guess.
Posting Guru
Joined: Oct 2011
Posts: 1,647
Likes: 1
From: Exton, PA
ok, here's my readings from the way in (and some reference shots from last night). unfortunately with traffic, I wasn't able to go WOT on the way in - and I don't travel any highways during the commute.
if these pictures show one thing, its that my in-cab noise level at cold idle, vs standing OUTSIDE next to the engine are only 10 dB different, with moderate acceleration in 4th being about 10dB higher still. Glenn, i'm sure your soundproofing will improve on that!
also, I consider my oil heater at home quite loud, but it is apparently significantly quieter than sitting in the cab of my truck at idle. ...interesting.
and I should have taken a reading at the tailpipe at idle as well - i'll have to do that tonight.
Idling immmediately after startup
Moderate Acceleration (not WOT) in 4th gear (ZF5)
Cruisuing in 5th (ZF5)
Standing next to truck at idle
Home oil (diesel :-) ) heater running
TV (at a "reasonable" volume) - Go FLYERS!
(and yes, that is a picture tube television, and yes, the flyers are terrible this year - but I don't care about either, and i'm still going to watch them both for as long as I can!!)
if these pictures show one thing, its that my in-cab noise level at cold idle, vs standing OUTSIDE next to the engine are only 10 dB different, with moderate acceleration in 4th being about 10dB higher still. Glenn, i'm sure your soundproofing will improve on that!
also, I consider my oil heater at home quite loud, but it is apparently significantly quieter than sitting in the cab of my truck at idle. ...interesting.
and I should have taken a reading at the tailpipe at idle as well - i'll have to do that tonight.
Idling immmediately after startup
Moderate Acceleration (not WOT) in 4th gear (ZF5)
Cruisuing in 5th (ZF5)
Standing next to truck at idle
Home oil (diesel :-) ) heater running
TV (at a "reasonable" volume) - Go FLYERS!
(and yes, that is a picture tube television, and yes, the flyers are terrible this year - but I don't care about either, and i'm still going to watch them both for as long as I can!!)
Fleet Mechanic
Joined: May 2005
Posts: 1,739
Likes: 14
From: Vale, NC
That's great data/pictures! I've got a bunch of soundproofing stuff from my friend that works for the company that supplies BMW/Mercedes. I'm going to have to pull some things apart and start adding some. Even 5 or 10 db improvement is really noticeable it would seem. My cab is so loud no one wants to talk at all... which isn't always that bad!