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post your grado mods.... - Page 402

post #6016 of 6022


I'm going to explain how I achieved the blue line measurement on my SR80i. Green line is with the comfy pads.

Disassemble your grado's using a hair dryer. Punch two holes in the driver (punch mod). Replace the grill or remove the button if possible. Perform the quarter mod (but with an internal diameter of 43mm) on the comfy pads. Cut two pieces of memory foam (from a pillow or matress topper), internal diameter 19mm, external diameter 43mm, depth 15mm.



o2smile.gif
post #6017 of 6022

Memory foam IS the giant killer of modding materials.

 

I should get some to experiment.

post #6018 of 6022



More measurements on the OREO pads biggrin.gif
post #6019 of 6022
Quote:
Originally Posted by 020Assassin View Post
 
Quote:
Originally Posted by 7keys View Post

The part that's glued is stronger than the wood it's self.

I hope you can send them off today.

I put a 125i in the cherry cups and compared them with a stock 125e. The cherry 125i had better attack and decay and soundstage than the stock 125e.

They are ready but I'll have to ship them in the morning.

post #6020 of 6022
Quote:
Originally Posted by st3al View Post

Nice work.

That's a really nice FR response you got from those.

I can strongly recommend using glasses/mugs or anything strong and circular you have lying around to use as weighted templates for cutting circles.

Pressing down (using quite a lot of your body weight) on the foam (which is also on a good cutting mat) and cutting around the object with a sharp craft knife/scalpel gives almost perfectly smooth edges, and for the center hole I use a coin.

With a short bit of intense effort, the results can be quite visually pleasing.

post #6021 of 6022

Buy 2 thin wall (short) pipes for the ID/OD you need for the holes in the memory foam, and sharpen one edge of each pipe with a file (razor sharp) then place them in position on the memory foam, and take a lump hammer and whack the pipes, and presto, you have a perfect circle/cut!

post #6022 of 6022
Quote:
Originally Posted by GREQ View Post

Nice work.
That's a really nice FR response you got from those.
I can strongly recommend using glasses/mugs or anything strong and circular you have lying around to use as weighted templates for cutting circles.
Pressing down (using quite a lot of your body weight) on the foam (which is also on a good cutting mat) and cutting around the object with a sharp craft knife/scalpel gives almost perfectly smooth edges, and for the center hole I use a coin.
With a short bit of intense effort, the results can be quite visually pleasing.

I done it that way, but the snap-off knife that I used didn't help, I think that a x-acto knife should be bettter
Quote:
Originally Posted by joseph69 View Post

Buy 2 thin wall (short) pipes for the ID/OD you need for the holes in the memory foam, and sharpen one edge of each pipe with a file (razor sharp) then place them in position on the memory foam, and take a lump hammer and whack the pipes, and presto, you have a perfect circle/cut!

I tried using mild steel but the edge gone bad after a few punches, maybe stainless steel is better.

The real deal is to cut the memory foam in slabs...
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