i know this is stupid but i have a lot of dynomat left. do you guys think dynomating a box would perform anything?

 

Other than being a product waste? No.

 

You would be better off selling it on Ebay or giving it away to one of your friends. Do not use it on your sub box. It is intended for metal application, not wood.

 

Actually both the above are wrong, Dynamat will dampen anything it is applied to, apply it to the inside of the box for dampening and sealing.

I will also laminate Dynamat between 2 sheets of 3/4" MDF for custom, high power, sub cabinets. 94

 

Different strokes, I guess.

 

That must have been one big s.o.b.

 

Wow, post pics if you have them.

 

Sorry, got pix, lots of them 12 big photo albums plus a big box full of slides [35mm] they tend to accumulate after 35 years, no way to scan and post them.
Time to replace the Nikon SLR with one of them there new fangled ones. 94

 

I Dynamatted the inside of my box as well. Every little bit helps

 

I've never bothered. IMO, a spec-built, properly sealed enclosure is sufficient for the average system. I've used polyfill in some applications, but not as a standard. MDF is already very non-porous (compared to junk like particle board) and quality sub baskets are made to eliminate unwanted resonance(s)

I dunno. Maybe if I heard it for myself, I wouldn't be a naysayer. For schitz 'n' giggles, I may try it with some leftovers. There's only one way to be certain.

 

It really works. It takes the ping or hollow sound out of certain types of enclosures and sub types. If you do the whole inside. Works great on band pass enclosures.

 

Actually MDF is very porous, even 1" MDF.

You want some "schitz 'n' giggles" if your current sub cabinet is not "sealed" and no matter how well constructed it is, pull the sub(s) "paint" the inside with fiberglass resin, 3 coats min., reinstall sub(s) and have a listen, then pull the sub(s) again and install the Dynamat, reinstall the sub(s) and listen again.

I bet you a dollar you will never build a box again without at least "sealing" it. 94

 

I realize MDF is porous, but I was comparing it to particle board. (which is junk) When I said properly sealed, I was referring to what you're talking about. I used two coats of some cheap roll-on bed liner, though. Why? Because I had some.

It's a PITA to pull the enclosure out, but I'll eventually get around to it and give the ol' Dynamat a try.

 

Thats why I build all my enclosures out of concrete........

 

This guy I know, who was into SPL/DB competitions, used a fair amount of concrete in his vehicle. I forget his specificity, but he said that it helped.

 

Who told you that? MDF is porous....Try to find any RF Top Gun videos of the the shop
vac picking up 2 pieces of supposed non porus mdf.

 

ahhh yes

Dynaboard is making a comeback....

boy that stuff gummed up my sawblades.

 

I have seen it done in SPL enclosures/vehicles, never thought of trying it in a vehicle thou, weight is one thing that comes to mind.....

Kirk R

 

I wasn't claiming that MDF is completely non-porous, just that it's a helluva lot better than standard particle board. I'll be more clear next time. To be completely honest, I have minimal experience when it comes to making sub enclosures. (obviously) Most of my experience is installation, not fabrication.



Yeah, his truck did have just a slight difference in handling, mileage, etc. (sarcasm) It was strictly a competition bit, though. He didn't really drive it.


Edit:???

 

Sorry I did'nt see that you had posted.
Dynabord was a product that dynamat corp had on the market in the early 90's.
It was regular dynamat sandwiched between 2 pieces of mdf.

 

concrete in a box.wow.i wont go that far. to heavy. i have civic si.lol