Birch vs. MDF test (spl results inside)

[PSturmer 10+ year member]

i am putting resin in a box right now. so once i get 3 coats in there i will hook it up and get another thread going with the results.

 

[Rawr-DQ 10+ year member]

The only thing I am wondering about resin is if the displacement of the airspace after applying the resin is going to make more difference than the resin on the walls itself.

if you end up layering the walls with resin (instead of the mdf soaking it up) you should try and displace some airspace in the non-resin box with a solid object like a piece of mdf.

 

[PSturmer 10+ year member]

The only thing I am wondering about resin is if the displacement of the airspace after applying the resin is going to make more difference than the resin on the walls itself.
if you end up layering the walls with resin (instead of the mdf soaking it up) you should try and displace some airspace in the non-resin box with a solid object like a piece of mdf.

yeah i see your point. it is something that should be taken into consideration. when i tested box volumes for this particle speaker. changing the volume from 1.25 to 1.2 will not even yield .1 on the meter. and the tuning changing is also not important in this situation. for the type of box i am working with i need to dramatically lower my tuning from 44 to like 36 to see a .1 drop.

 

[Rawr-DQ 10+ year member]

Cant wait to see some results //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Maybe you could do a polyfill test at the same time too //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Lakota 5,000+ posts]

for the type of box i am working with i need to dramatically lower my tuning from 44 to like 36 to see a .1 drop.

That must be nice. A few inches on my port can change my score by a db!

 

[PSturmer 10+ year member]

That must be nice. A few inches on my port can change my score by a db!

it usually does. its just when type r's are in such little box's tuning becomes less important.

 

[528hz 10+ year member]

I don't know if you answered this (I didn't see it posted) but weight wise, what is the difference

between the 2?