How to sound deaden the interior of your TJ

Jon Wildes said:
are you saying that you wrap the mic with it to reduce noise?
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No, I wrap the compartment the mike sits in on my other cars when I get complaints from the other side. My TJ, I went and purchased a different mike and placed it between the center section and drivers gage panel(?). The new mike was $30 and a whole lot better than the old.
 
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Ericict said:
No, I wrap the compartment the mike sits in on my other cars when I get complaints from the other side. My TJ, I went and purchased a different mike and placed it between the center section and drivers gage panel(?). The new mike was $30 and a whole lot better than the old.
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Gotcha. I have a mic in my Jeep also the on that cake with the head unit. Same issue picks up a lot of noise and isn’t high quality.
 
Jon Wildes said:
Gotcha. I have a mic in my Jeep also the on that cake with the head unit. Same issue picks up a lot of noise and isn’t high quality.
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Riding with the soft top at 65mph, I ve been told by wife it is very clear and no wind or engine noise. Once it warms up, Ill try it with the top off.
 
zebra12 said:
Link to product?

TIA
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Ericict said:
I purchase from the YARD STORE in Wichita. When the storms pass, Ill go out to the garage and see if there is any mfg info on it.
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Being acft parts they can get pricy. If you can order from the Yard, it is surplus and much cheaper. The Yard

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For anyone who wants a good in-depth overview of the major steps to sound deadening a car, I recommend looking through this web site:

https://www.sounddeadenershowdown.com/
The person who runs the site has since retired, so his products are no longer available. However there is a lot of good theory and methodology on the site. Similar products available elsewhere work just as well.

Years ago, I used this method to sound deaden a base model f150. I was able to significantly reduce the road noise and at the same time insulate the cab. Now the heater/AC seems overpowered and I can hold a conversation at freeway speeds.
 
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Ericict said:
No, I wrap the compartment the mike sits in on my other cars when I get complaints from the other side. My TJ, I went and purchased a different mike and placed it between the center section and drivers gage panel(?). The new mike was $30 and a whole lot better than the old.
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Do you have a link for the Mic you used?
 
I pulled up the carpet on my LJ, it has a good 1/2" of sound pad attache to it. Is it really worth adding more butyl to this much sound proofing? I could see if it is like my older YJ, it has no sound proofing attached to the carpet. Tim
 
This will sound like a silly question but has anyone actually found that tire noise was louder after doing this? I had actually done the tub area under the seats last summer to see if it helped with the vibration harmonics, I used the 80 mil Nioco product and actually did the wheel well areas of the rear of the tub. Yesterday I finally got around to doing the floor of the rear cargo area and added the 120 mil Nioco pad to everything. I drove the Jeep today and while it sounds solid and not as much noise from under the Jeep the tire noise seams like it has increased 10x’s. To the point I drove it to one of my shops today that was 200 miles round trip and I had to grab a set of ear plugs for the ride home. Tire pressure is what I have been running for the last year, wear is dead eaven and I rotated them last week. I’m running a soft top and the windows were up, the tire noise was more manageable if I rolled the windows down slightly.

It is almost like the sound deadening canceled out the lower frequency and now the tire noise is overpowering.
 
jeepndogs said:
This will sound like a silly question but has anyone actually found that tire noise was louder after doing this? I had actually done the tub area under the seats last summer to see if it helped with the vibration harmonics, I used the 80 mil Nioco product and actually did the wheel well areas of the rear of the tub. Yesterday I finally got around to doing the floor of the rear cargo area and added the 120 mil Nioco pad to everything. I drove the Jeep today and while it sounds solid and not as much noise from under the Jeep the tire noise seams like it has increased 10x’s. To the point I drove it to one of my shops today that was 200 miles round trip and I had to grab a set of ear plugs for the ride home. Tire pressure is what I have been running for the last year, wear is dead eaven and I rotated them last week. I’m running a soft top and the windows were up, the tire noise was more manageable if I rolled the windows down slightly.

It is almost like the sound deadening canceled out the lower frequency and now the tire noise is overpowering.
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That’s not the experience I had. Overall, everything was quieter than before. Still no regrets. My new KO2’s were pretty quiet before I even started though. Are you running Mud Terrains? Sounds like some sort of cabin pressure resonance issue if rolling the windows down slightly helped. I also have a hard top, so there is that difference as well.

P.S. the hoodliner material I used is holding up well. Still looks the same and is still sticking really good with the adhesive backing like the day I installed it. I promised to report back on this at some point, so here it is!
 
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astjp2 said:
Oh, just an FYI, you do NOT need to cover 100% of every surface, a 90% coverage will show the same results as a 100%. It does not have to be perfect to deaden the sound.
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I would say you don't even need 50% coverage. Covering every inch of the surface is old school, and a waste of material.
 
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