Build Session 2: The Construction

[CBFryman2 5,000+ posts]

Thoes runs where from using resin as glue and they only look bad. After resining you can hardly tell they are there with your fingers.

 

[Wkbdkid 10+ year member]

nice build so far. what exactly dooes resin do on the inside? does it jus seal it up more?

 

[CBFryman2 5,000+ posts]

It does a number of things. It seals the MDF (which is porus), it adds mass (which lowers the Fs), and it stiffens the MDF slightly. It also makes for a smoother surface.

 

[CBFryman2 5,000+ posts]

Resining offers no benefit to the ear, only tenths on the mic. Sometimes it doesnt even add to the mic. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mannyb18b]

HDF ftw?

 

[CBFryman2 5,000+ posts]

HDF is hard to come by. It is still porous as well. If you are building an acoustically dead enclosure HDF or BB would be optimal. I'm not building an acoustically dead box (yet).

Here are my steps of testing.

I'm starting out with a one layre, un-braced box resined and rounded corners. Then I will get a base line SPL run. Next I will screw on another front baffle, if that increases SPL I will double the back. If that increases SPL then I will add All Thread bracing front to back. If that increases SPL I will double the top and bottom and do top to bottom and side to side braces.

Then I will start messing with tuning then removeing bracing to see if it changes anything. Once I have everything down pat and throwing up good numbers I will pretty it up some.

 

[lilmaniac2 5,000+ posts]

hdf sucks to cut also //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[CBFryman2 5,000+ posts]

It's a start.

 

[CJL 10+ year member]

//content.invisioncic.com/y282845/emoticons/woot.gif.aaa6090e619a97b6090d16dd863c5a69.gif nice build log subscribed

 

[CBFryman2 5,000+ posts]

There is something chrome and black and 15" sittin on the work bench behind me...

 

[9512ds 5,000+ posts]

There is something chrome and black and 15" sittin on the work bench behind me...

devillian???

 

[CBFryman2 5,000+ posts]

Close, but no cigar.

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[9512ds 5,000+ posts]

Close, but no cigar.
//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

ehhh good for a laugh i guess

 

[delvryboy 5,000+ posts]

i've found resin to raise the FS slightly....go figure.

i like the resin method, but i do it differently.... i make a large batch, pour it in the box, then roll the box around //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif i only do 2 sides at once to avoid dripping.

 

[CBFryman2 5,000+ posts]