In cab, windows up, 80mph

Gonna need to fix this...

 

So what are good and bad levels?

Cool app though...

 

Good question. Here is what I found:

Dangerous Decibels » How Loud is Too Loud?

 

All I know is I'm on a 6 hour drive and I forgot how loud this thing is haha

 

I have a friend that always rocks ear plugs when driving his 1st gen Cummins.

 

I may be investing in some of those. Or maybe some dynamat

 

That's about where mine is... I have the same app

 

I usually just turn up the radio............. Wait.............

 

Hahahahaha I do the same. Decibels went up to anywhere from 95 to over 100 depending on the song.

 

94 could also be your mic's limit. Could be higher.

 

The mic on the phone? Interesting...

 

I discussed earlier a great solution. Do a search... I used lead and Military 8802 spec adhesive/sealant. makes a HUGE difference. That plus some floor insulation, rear panel damped with lead- and wow.


Michael

 

i did a similar test, saw 88-92 consistently at 65 mph driving down the highway, windows up, radio off, a/c off.

to compare, I went for the same drive in my girlfriends 2013 jetta TDI. stayed in the 60s.

thought to myself, well, any cummins truck is going to be louder than that.

so i then tested it in my old mans 2014 crew cab, high 60s, hit a low 70 on occasion.

I have dynamat on my floor as well as carpet, and a carpeted headliner. but no other insulation

 

You want heavy (mass) materials to stop sound. Lead is excellent for this. My crew cab is in the high 70's to mid 80's and I still don't have a headliner

 

What brand dynamat? I was told the chip foose one is the best.