Ok, I KNOW that someone has run into this before. I've got my Momos all broken in now, and BELIEVE ME they can hit hard! Now, my only problem is outside the truck you hear a lot of vibration (buzzing) coming from just under the subs. My question is where do I need to put some sort of padding? Also, if I put a strip of sound dampener under the subs (down-firing), will that make a difference?

 

You mean you spent a lot of time, tore your cab apart to install Momo's, wiring, amps, etc and didn't bother to use any dampening material to take full advantage of your expensive new sonics? Silly boy.

 

had the wiring done by someone else and yeah, I did the seat kit, etc w/o putting anything under it... cheap mistake though.

 

Well, it's not too late to fix it. It's a bit of a hassle, but well worth your effort. And you don't have to spend a bundle on Dynamat. Plenty of other product out there that does the same thing. The spray stuff from Cascade (found at Parts Express) does an acceptable job inside your doors. If you use it, remember to use a pick and reopen the drain holes in the bottom of your doors. You can go to McMaster's and find Mastic to use like Dynamat. Or you can visit your local Home Depot and look for the Owens/Corning (Pink Panther) "Weatherguard" stuff -- get the non-grid version. It's the same as dynamat, but stiffer. It comes on a 33-ft roll -- plenty for your entire cab. You'll find it in Roofing. If you do nothing else, you'd be wise to at least get a sheet or two of dynamat to put under your carpet that's under your woofs. It's also fairly easy to do your rear wall. Fold down your seats, remove the plastic panel and "carpet" on your rear wall, then matt the metal. This will also muffle many of the odd noises coming from your bed.

 

hey thanks sundog... I'm probably going to lay something under the rear carpet. I dont hear the buzzing unless I'm outside the truck, so I'm wondering if there is any external dampening that I need to do. Not sure I want to do the entire cab in sound dampening material... theres an ungodly amount of sound coming from this setup, and I still want to be able to hear outside when I'm pulled up to the dock. You know... the party thing, and yes it's private property -so theres noone else around to complain about noise... which is why I didnt do the dynamat in the 1st place.

 

Dynamat material/sound dampening will have no effect on what you hear with your windows down or doors open. But the difference inside your cab when you're on the road made by the material is terrific. If done properly (and enough) it quiets your cab. You can hear so much more detail in your music. The outside noises, wind, road groan just don't seem to be there as much. It's a major difference, and I would highly recommend you consider it at some point. Perhaps on the underside outside, you could do a small Ziebart job just under your cab?

 

I just had an idea, well really I had it earlier for my Falcon. How about getting some bedliner matierial shot into the floor (and back wall)of the cab? I am definitely getting it done on my Falcon, but I thought it could work VERY well for sound deadening on a truck cab. A little expensive, but effective,,,,98

 

That's why I was suggesting a small Ziebart-type job, 'Screamer. Sounds like Ruune is on a budget. A Line-X job the size of a SCrew bed, for example, rings in at nearly $400 samoles -- certainly more than enough to have the best Stereo Shop in town to Dynamat the entire cab with change left over to buy a good set of speakers and a six-pack. On the other hand, I've gone to my local undercoater establishment (with my old Dodge), and one of the boys was happy to zap the area under my trunk for a few sawbucks under the table while the boss was at lunch. Just a thought...............

 

One URL will solve your problem
http://www.b-quiet.com

 

Or this one? www.mcmaster-carr.com Do a search for mastic, or high temp mastic. They have VERY large sheets of sound deadening matierial exactly like Dynamat, for about $14 plus shipping,,,,98

 

Stay away from the b-quiet product if you live in a hot environment. I was thinking of buying that stuff, too. I spoke with a b-quiet rep and he told me that it is NOT recommended in climates that are consistently hot. In doing research on this product, I came across a thread where a fellow in AZ had used b-quiet on his entire cab. During the summer, the product he applied to the rear wall of his P/U came loose and just slid down in one big oozy mess. The Rep also said the product is not recommended for "overhead" applications for the same reason. He said I could ensure "better adhesion" if you ALSO use Scotch-brand spray adhesive when applying the b-quiet product. Sort of makes you wonder, doesn't it? Caveat Emptor.

 

You arent supposed to use the cheap b-quiet on verticle surfaces.

 

check, deus. And the operative word is "cheap". I wouldn't use the stuff regardless of application. If it's so fussy that it can only be applied to horozontal surfaces in climates above mason-dixon line, then it's just not worth buying in the first place.

 

The warning about B-Quiet only applies to their Original product. If you'd take the time to look at the site, you'd see it's their entry level product. I have their Brown Bread material in my ex cab F-150 and couldn't be happier. Works awesome, sticks like crazy and cost me a ton less than Dynamat.

 

I'm going to be using the hi temp mastic under and behind the subwoofers... I figured out what's vibrating- it's the seatback. I'm going to use the hi temp mastic on the entire back wall to dampent the sound AND isolate the vibrations that are shaking the seatback.