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Fostex T50RP Incremental Mods and Measurements - Page 82

post #1216 of 1224
Since I put the velour HM5 pads on my existing pair they do leek a lot more so I've decided to make myself another pair with better isolation. I'm currently in the US so I've picked up a new stock pair t50rp's and finally also managed to get myself a pair of the Alpha Pads.

Question is if anyone has gotten a good result with the Alpha pads and if so with what configuration?
post #1217 of 1224
Quote:
Originally Posted by peter123 View Post

Since I put the velour HM5 pads on my existing pair they do leek a lot more so I've decided to make myself another pair with better isolation. I'm currently in the US so I've picked up a new stock pair t50rp's and finally also managed to get myself a pair of the Alpha Pads.

Question is if anyone has gotten a good result with the Alpha pads and if so with what configuration?

I've managed to make a good mod with AP for the T50RP's : http://www.head-fi.org/t/734437/fostex-t50rp-tuned-for-alpha-pad-mrspeakers-leather-comfort-strap-included-european 

 

I've used motor boat engine isolation (cf post below), plasticine and cotton.

 

How to :

 

Cut the black felt around the driver (don't cut the "grid" )

 

 

For the driver side I've done the same work than mrspeaker with his rastapants : plasticine all around the driver and on the rim (to seal the cup), don't touch the white gauze. 

 

On the pics the cotton stick on the plasticine

 

 

I've covered the inside of the cup with motor boat engine isolation (thickness : 1cm) and placed cotton over it (6 balls). I've also closed the vent, but not entirely (3 of 4 vents) 

 

On the pics some pieces don't stay in place while the cup is placed vertically, I've covered every hole.

 

 

Place the cotton (some of it stayed stick on the plasticine that's why it not covered everywhere on the pics)

 

 

NOT on pics : the electric tape covering 3 of 4 vents in each cups.

 

 

With stock pad the result is very thight bass in good quantity, a lot better treble, great mids => a bright headphone but non sibilant.

 

With the Alpha Pads on : bass got huge depth ! (very similar to the moded Yamaha YH100 one's), better SS and overall SQ, highs a little less present. 

 

In my opinion it's a very good mod ! :)

 

By the way : don't put akasa with Alpha Pads, you will got WAY too much bass ! :D 


Edited by Tasoeur - 9/21/14 at 7:00am
post #1218 of 1224
Quote:
Originally Posted by Tasoeur View Post

I've managed to make a good mod with AP for the T50RP's : http://www.head-fi.org/t/734437/fostex-t50rp-tuned-for-alpha-pad-mrspeakers-leather-comfort-strap-included-european 

I've used motor boat engine isolation, plasticine and cotton.

How to :

For the driver side I've done the same work than mrspeaker with his rastapants : plasticine all around the driver and on the rim (to seal the cup), don't touch the white gauze. 

I've covered the inside of the cup with motor boat engine isolation (thickness : 1cm) and placed cotton over it (6 balls).

With stock pad the result is very thight bass in good quantity, a lot better treble, great mids => a bright headphone but non sibilant.

With the Alpha Pads on : bass got huge depth ! (very similar to the moded Yamaha YH100 one's), better SS and overall SQ, highs a little less present. 

In my opinion it's a very good mod ! smily_headphones1.gif

By the way : don't put akasa with Alpha Pads, you will got WAY too much bass ! biggrin.gif  

Thanks a lot!

This sounds like a great alternative tuning to my current pair. Exactly what I was looking for smily_headphones1.gif

I'll check it out as soon as I get back home. I've got loads of leftover materials since I made my last pair so I'll probably got all I need to make these.
post #1219 of 1224

I hope it will help, don't hesitate to share your futur mod ! :beerchug: 

 

I'll take pictures of my mod if you want ;)

post #1220 of 1224
Quote:
Originally Posted by Tasoeur View Post

 

 

I'll take pictures of my mod if you want ;)

 

Please do, my T50s are out for paint, and i plan on using alphas, or the alcantara pads i also have. I want to use the alphas since i already have them and i wouldnt have to buy a second pair of 1540 pads(already on my he4).

So, was going to try lattice mod in cups with rock wool, few other little things. But, would like to see your mod as well in case mine doesnt work to well.

post #1221 of 1224
Quote:
Originally Posted by hemipowered007 View Post
 

 

Please do, my T50s are out for paint, and i plan on using alphas, or the alcantara pads i also have. I want to use the alphas since i already have them and i wouldnt have to buy a second pair of 1540 pads(already on my he4).

So, was going to try lattice mod in cups with rock wool, few other little things. But, would like to see your mod as well in case mine doesnt work to well.

Okay, I'll take them tomorrow as I need a good light to take clear pics. 

 

A little bonus to my mod : you can easily remove everything ! Nothing have to be glued.

 

For the moment here is the isolation (acoustic one : http://www.solutions-elastomeres.com/en/9-composite-foam/110-se50-composite.html) I've used :

As you can see, I've cut pieces of 1cm (thickness).  

 


Edited by Tasoeur - 9/20/14 at 10:57am
post #1222 of 1224

Thanks!

post #1223 of 1224

I've updated my "How to " post with pictures ! :beerchug:

post #1224 of 1224
Quote:
Originally Posted by Tasoeur View Post

I've updated my "How to " post with pictures ! beerchug.gif

Thanks a lot!
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