Just listened to some Fostex T50RPs today... WOW!
Oct 6, 2011 at 8:55 AM Post #3,511 of 11,346
Have finished stage 1 of my modifications:




 
observations: veil gone (probably mostly from removing the felt over front of driver/inside of cup.
adding felt to inside of cup has reduced efficiency and I don't notice resonance issues as much.
I can only imagine how good this will be with a proper dual entry recable with some decent wire.
Not even sure if I want to go to wooden cups at this stage.  Seems a bit costly.
 
Oct 6, 2011 at 11:06 AM Post #3,512 of 11,346
Oct 6, 2011 at 9:03 PM Post #3,513 of 11,346
I used the finest tulle I could find - closest match to what is used in the LCD-2.
The stock tulle they have over the driver should be fine, but I damaged it while removing the felt.
If you are careful you can get away without damaging the mesh/tulle and keep the existing.
 
Oct 6, 2011 at 10:47 PM Post #3,514 of 11,346
my Sony SA5000 pads arrived this afternoon.  a big thanks to monsieur leeperry.  very comfy and better sonics than stock.  YMMV.  next up is to order some Paxmate.   
 
what i love about these is that they beg to be cranked up, effortless, sail through the most demanding material without a sweat, and zero upper mid-range/treble fatigue. 
 
Oct 6, 2011 at 11:08 PM Post #3,516 of 11,346
No short version
blink.gif
but there is a summary here
 
Oct 7, 2011 at 12:47 AM Post #3,517 of 11,346
Small mod to improve earpads adapted from guide at start of this thread:


Foam damping material is applied directly to the inside of earpad instead of to the baffle.
This removes problem of the two profiles aligning correctly and allows easier adjustment of earpads.
Simply use earpads as template.  The inner ring is necessary to remove gap at inner edge between damping material and baffle.
This mod has greatly improved soundstage, but has in turn focused attention back to some remaining resonance issues.
Needs some LCD-2 pads.
 
 
Oct 7, 2011 at 1:35 AM Post #3,519 of 11,346
I would guess yes, but I would give these a recable long before going balanced with them.
 
I've been thinking the same thing. These isolate left->-right well, so it is a possibility they could be awesome with them.
 
Btw, check back tomorrow morning / midday.. Evening latest. :wink:
 
Oct 7, 2011 at 2:57 AM Post #3,521 of 11,346
I was guessing what could be the nearest sound if I go from Micropore to Transpore and I guessed right on first install:
 
From

2-2-2
0-X-0
2-2-2

to

T-T-T
T-X-T
T-T-T
 
2=2layerMicropore
X=Masking Tape
T=1layerTranspore
 
dogears mode: mids became more shouty(?) or spiky(?), that piano(?) on Eagles' The Last Resort at 3:46 became a bit 'painful' to my ears. Overall, the sound is more cleaner (not really sure if I loss warmness here) and a bit brighter and (a bit) more focused (bass) and (a bit) more open (soundstage).
I think this is best A/B'd with another Fostex... can't wait for my Silver :D
 
Oct 7, 2011 at 3:43 AM Post #3,522 of 11,346
by the way has anyone got a link to those $75 t50's?  Might need a spare set in case I kill these while modding.
 
Oct 7, 2011 at 4:15 AM Post #3,523 of 11,346
You shouldn't kill them. They're hard to kill.
 
They're out of stock as far as (I think everyone) know until the end of the month
 
 
Oct 7, 2011 at 6:39 AM Post #3,525 of 11,346
My O2 pads are in the spanish customs. I hope they will pass the pads without bleeding out my money...
mad.gif
 and today will arrive the Paxmate and the Dremel, so this weekend I will work again in the orthos.
 

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