Modelling clay!!!

[JimJ 5,000+ posts]

The point of the clay isn't to seal up the baffle.

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[evers 10+ year member]

What are you using the clay for? For a seal or for an acoustic deadener? Clay is s wonderful thing to have inside any enclosure and for a lining inside kick panels. It gets pretty hot here during the summer and mine has never "melted" Probably 140+ inside the truck. I get mine from Michael's. As for the rope caulk, I guess it works good for a seal but I wold prefer a type of weather stripping.

It's for my door speakers (cdt 6.5's) I'm just gatthering as much input on door deadning as I can. Tha clay so far was my more questionable step.

 

[JimJ 5,000+ posts]

In addition, clay can be used on a driver's basket if it has basket resonances...I've seen clay and epoxy work for this...

 

[evers 10+ year member]

So the clay helps dampen some of the sound. Also what's the life span. I'm not planning to change the system for a while. Just trying to think ahead.

 

[FoxPro5 5,000+ posts]

So the clay helps dampen some of the sound. Also what's the life span. I'm not planning to change the system for a while. Just trying to think ahead.

Clay vs Constrained Layer Damping (CLD) - what most people refer to as "sound deadening" mat.

Clay:

- no constraining layer (ie foil)

- poorer ability to return to form (ie elasticity)

- more mass per sq ft or sq inch, etc

CLD:

- constraining layer

- superior ability to return to form

- less mass

All depends which tool you need for which job.

The ability to dampen sound depends on the adhesion of the damper to the resonant surface. Not all CLD products are created equal.

If your baffle is not dense enough, then consider denser materials in the build. Lead is the #1 choice here. It has a density five times greater than poured concrete. It's also an idea blocker of sound because it's just so difficult to move.

HDPE is more dense than MDF and has a different RF.

If the baffle build materials are within the passband of your driver (60 hz to 2 khz ??) then you can modify them to either move them above or below the passband.

Fiberglass has a RF of like 4k IIRC. So it can also be used.

Alternating materials and giving the sound more to "work" though will certainly be a benefit.

I added clay to my baffle because it helped make a great gasket between it and the plastic door card.

 

[req 5,000+ posts]

just pick the right kind of clay.

the clay i used melted off my door. i started noticing white gooey shit comming out from between the door card and the door panel. so i popped the door off after several cleanings, and found the clay melted off and was all sitting at the base of the door card puddling about.

i got it at michaels and it came in a plastic wrapped rectangle and said 'modeling clay' on it. make sure you read the fine print for a temperature on there.