I want to do some sort of soundproofing to my cab. The dynamat and other similar products are out of my price range, so I am looking for other options on how to do it. I figured just some residential carpet padding glued to the floor, back wall of the cab and door outer/inner would help a lot. Good idea, bad idea, or other ideas?

 

save your money and do it right

 

Just a word of advice, dynamat does not have to be laid out in solid sheets and it doesn't take much to make a difference.

I bought 6 square feet, split 2 squares in 8 pieces and spread them out inside my quad cab door skins, 1.5 squares scattered in each front door and the extra .5 square scattered on the inside door frame underneath the door panel. Made a significant difference in the sound.

I remember reading (a while ago) that 1 square inch placed in the center will 1/2 the resonation on a 10"x10" area.

Save your money and do it right the first time.

 

I'll have to try that sometime!

 

Our member Kazirl mentioned Lowe's peal and seal- I checked it, and he is absolutely right!

It is a cheap alternative to those expensive Dynamats and it is used often in the audio world for that purpose.
I wouldn't wonder if it is the same base material, just another brand name...

 

keep an eye on craigslist.
i recently picked up 16 sheets of dynamat for $100.

also check:
Sound Deadening Materials for Noise Reduction from Second Skin
They are always sending out email discounts for 30% off.

 

I have used that rubberized under coating aerosal. works pretty good. not as good as the dyno mat or peal and seal but for $10 you can spray the underside of the cab

 

I picked that tip up from another forum. I've never used any Dynamat or anything like that but it seems to be made out of a similiar material.

Sound Deadener Showdown - Your Source for Sound Deadening Products and Information

This website mentions that 25% is the most effective. Any more dampening you gain by adding more isn't worth the added cost. Also only flat sections of metal need the dampening. Curved or bent/shaped sections are stronger and don't vibrate as much.

 

I picked up a roll of peel and seal from Lowe's, and I am going back to pick up some of this water heater insulation stuff for the head liner and door inners. This website has some good info. Hotrodders.com -- the net's largest hot rod site

 

Sound Deadener Fatmat 100 sq ft Bulk Pal here is stuff called FATMAT, you can get two rolls, each is 33 feet by 18 inches for $130, sounds like a damn good deal to me, im gonna do as much of my cab as possible to knock down the drone of the stacks i will be installing