Just listened to some Fostex T50RPs today... WOW!
Nov 21, 2010 at 2:27 PM Post #633 of 11,346
and now for a picture of the culprit that randomly kills the sound in either channel for many ppl all around the world:
 
I've got two T50RP's and their springs are rather lazy....there's been many reports of the same problem in that thread. Such a relief when it's bypassed, and it leaves more room for damping too.
 
Nov 21, 2010 at 3:35 PM Post #636 of 11,346


Quote:
why is that people dont like the fostex headphones..wats so wrong about them..



If you're asking why more people don't like them and listen to them, I think it's because they are professional tools, and not really marketed for a consumer market.
 
Nov 21, 2010 at 3:54 PM Post #637 of 11,346


Quote:
why is that people dont like the fostex headphones..wats so wrong about them..


they sound terrible, really. they do.
 
BTW, I've updated the sales thread in my signature..if you'd care for some brand new earpads and have a stock cable, you might have yourself a deal...I care a lot more for a spare cable than earpads.
 
Nov 21, 2010 at 4:53 PM Post #638 of 11,346


Quote:
and now for a picture of the culprit that randomly kills the sound in either channel for many ppl all around the world:
 
I've got two T50RP's and their springs are rather lazy....there's been many reports of the same problem in that thread. Such a relief when it's bypassed, and it leaves more room for damping too.


Agreed.
 
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Nov 21, 2010 at 4:58 PM Post #639 of 11,346
they don't do thumbnails on photobucket? yay, aluminium foil lining in the cups...I tried it ages ago on a DT770/600Ω, the trebles were sounding metallic and harsh as can be.
 
btw, I've just realized that the 9 screws that hold the drivers together were not completely screwed in on my phone..
 
how do you like it w/ the drivers back naked?
 
and the new cable looks rather heavy, innit?
 
Nov 21, 2010 at 6:02 PM Post #640 of 11,346
I was just following what SP Wild recommended regarding the foil
 
I did not like the drivers bare on the back for both acoustic and mechanical reasons. I did not fancy the idea of dust getting inside them and messing everything up, so, I covered them up with both Micropore and Transpore tape.
 
I also found the same thing out yesterday about the screws in my cans.
 
If by heavy you mean actual weight or gauge, yes, they are quite. But I do prefer them over the stock ones any day... With the stock ones, just moving the cable would sever my connection on a random channel. I raged and whipped out my soldering iron to show my headphones who was boss.
 
Anyways, I'm having a woodworker make me wooden cups for these cans following smeggy's diagrams.
 
To be quite honest, I'm fairly new to the audiophile world, I know very little about what certain materials do so to sound.. All I'm really doing right now is following instructions and trying to emulate what others have done.. Just like how I will be inserting foam the way you suggested soon.
 
I have altered my cans by quite a bit and I will get pictures later tonight.
 
 
 
Nov 21, 2010 at 6:09 PM Post #641 of 11,346
yeah, you really wanna replace the aluminium foil by acoustic foam...what it does is create even more resonances, the opposite of what you want really.
 
I've just put a free sample request for some studio dampening foam...I'm not sure what it'll do when I'll cut it 4mm thick, time will tell :)
 
I've also read on their site that acoustic foam works a lot better from a wide angle, the attenuation is much lower when the sound source is perpendicular...only starting around 4kHz, instead of as low as 200Hz when the angle is fairly wide.
 
I like stock cables, they're sturdy and light...braided cable are fragile(roll on them w/ a chair and they're gone), and microphone cables are too darn heavy to my taste. Each to his own anyway :wink:
 
Nov 21, 2010 at 9:22 PM Post #642 of 11,346


Quote:
The T50 seems out of stock everywhere anyway.



Mission accomplished!
 
I haven't been tinkering with my T50s because my attention has been drawn away to DIY electronics, but I will come back to them.  I had a listen them other night and a while ago I thought my T20V2 sounded better, but last night the modified T50 sounded vastly superior with all the resonance killed.  I seem to have a dip in the upper mindrange that I would like to address and perhaps tame the treble a little more.  They soundstage quite largely after mods...much greater out of head experience than the T20V2, which retains the in head sound staging of the stock T50RPs.
 
Nov 22, 2010 at 1:03 AM Post #644 of 11,346
aah..well maintaining a brick and mortar store and especially one dealing with headphones alone isn't cheap i would reckon.
 
Still is way better than european prices which I might add i was considering since i wanted one to finish up the TP real bad. My other TP should be in India come december finally to go on the India loaneer.
 
Nov 22, 2010 at 7:58 AM Post #645 of 11,346


Quote:
Joel,
 
I was trying to use the pad to dampen reflection in the cups, mainly because I do not have any decent wool felt to use as you suggested. Do you have a source for the type of felt that you like to use? You may be correct about the pads in mine touching the backs of the drivers - I seem to be getting plenty of bass from them, although I am not a bass head - I listen to quite a bit of large orchestra classical music and some pop / rock stuff mostly. If I can find some decent felt I will try a piece of that instead. Thanks.
 
Quote:
Quote:
This is using the Transpore / Micropore damping with Loc-Tite Fun-Tak damping the back of the cups and the back of the driver baffle, plus a 1.5 inch self-stick felt furniture pad disc at the back of the cup. This is also with the stock pads. I removed the felt on the front of the drivers and opened the vents as well.

 
Where exactly did you put the furniture pad?  That's going to be VERY close to the driver, and might even be pressing against it.  I might recommend a sheet of felt for this application instead.  What exactly are you trying to acheive with the furniture pad?


 


oops - spoke too soon. I really need to get some acoustical damping foam to get rid of the reflections in the housings on these things. I played a symphonic recording that had brass chords in it (2nd movement of Philip Glass Sym. #8) and YUCCHH! Reflection all over the place. This is with 2 strips of wool felt in the bottom of the cups instead of the furniture pad disc. The disc had some reflection as well, but not as bad. I still notice some coloration in the mids being too pronounced versus the high frequencies, but it is getting somewhat better. I finally got my amp back (a prototype L'espressivo Torpedo) from my brother, who was finishing up some mods on it, and it sounds great on my K501's, but makes the differences between them and the T50RP's even more apparent, and not in a good way for the Fostex's I am afraid. I lent him my Fischers, so I have not had a chance to listen to them with the amp yet, so I cannot comment on them versus the Fostex's.
 

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