Kabeer

Boilermakerfan might try out some lamda pads on them soon, similarish shape.

mwahahaa!! hold on wait, dammit that means iv let the pixies out of all my orthos :'(.

No one we know of has modded one, all owners have theirs stock. I think Wualta cant even open his any more if im not mistaken (stripped a screw?) You have to be careful with those screws. To save you time and finding a modder, id reccomend you try my earpad idea first. Btw dBel: the diaphragm isnt lighter than the rest, its the same as the T50v2 and T50v2 oem's, and even T30 I think. Its just the tensioning of the driver thats different. Iv had a pop at all of them bar the v1. And boilermakerfan: that NAD is a beast, I can help you out as I own one too. Looool, I only broke it once thank you! , and that was because I was a pioneer in figuring out how to open an unknown headphone . Will be interesting to see how the modifications improve it! or if you realise stock is best.

I disagree, it will have the opposite effect to what he wants. It will become less bright. My expectation, would be muddier and bassier. Or muddier , less birght and the deep bass becomes quieter too. I think you were thinking of a certain stat or something.... Possible solutions: Reflex dot/strip: will give you boosted highs, thats it. Add a layer of damping, for instance a layer or felt: Will inscrease the damping, reducing any leftover resonances, making transients faster, sucking up bass a bit, and trebles will become a bit more prominent. At the sacrifice of a bit of openness. But there are so many variables to felt or wool densities, its a balancing act. Im suprised you need more trebles, according to wualta they have v.good trebles, SR-X like. Id be glad to be the one to run a health check on it if you want hehe. If it was me id rather keep it stock than woodyfying, but then to people like steve and smeggy if you dont petrify something its like junk to them heh. EDIT: actually, i have another snazzier idea, but its something the other big cheeses dont really like doing. Id remove the earpads, and put something on with a larger inner diameter, maybe even circum pads with small holes. (i just sold my ross pads along with my T50 so cant give you that unfortunately)

What dya want to change on your T50?

hehee. Maybe your old pair is lying in a box somewhere on your property! It's a shame they are so scarce. I would imagine that it might not be to everyones tastes (especially those who really like v.prominent trebles), but midrange is the best iv heard to far. Lets hope more pairs turn up on the market.

1) YH1k 2) HP500 or ECR500

Haha Tina Turner made u sign a non-disclosure agreement huh? darn

ooh, what is this? your diy drivers?

Not entirely sure, Im using the actual Fostex wool biscuits from my NAD and Aiwa vintage T50 variants. I guess something like the wool stuffing used in roof insulation would be similarish...(but careful with handling, do not inhale).

Yay!! congrats

Sounds like they are an elecret with built in transformers! nice. The KH-72 and 92 were Kenwood/Trio orthos from what is presumably the same line up, they use large drivers completely different to the KH-83 generation. (from photos they seem to be kinda Akai/T30-ish) The KH-52 and 32 I think were dynamics.

wooow, cant wait to see what drivers are in here . Are you sure they are ortho though colin? No one lists that model as ortho, only 7x and 9x.....hmmm

I used a pair of rectangular circum Pads from a 1970's Ross dynamic headphone. Btw, Im talking about the 1980 vintage T50. NOT the modern T50rp

Hah stick shiny wood any anything and your there . You'll woody a cat one day.

I just emailed Sankar, asking him if they would like some help in optimizing the next housing design. Im sure a few of the ortho thread memebrs collective knowledge could prove v.useful. That said, apart from the earpads (i cant tell if they are velour), the housing seems totally fine, depending on how it is implemented inside)

Nice pics! Did you happen to find out what they plan to do after the first 25 run? Make their own housings then? Were the pads velour?

Thanks for the impressions Icarium!! . So Head-Direct are ALSO making an orthodynamic?? This is news to me, details please Is this the Head-Direct one (the light brown woodie)?

Was the engineer Sankar? or somone else? Even if the enclosures suck, can you describe the sound more? (all that really matters for the moment is if the enclosure is reasonaly rigid and fully open, which it should be). Dammit NoNoNoNoNoNo/Colin, where are you with the gazzilion snaps!!

Wow Fragile is a lucky guy!!!

Iv seen a graph in a scientific document where the DT48 is used as a reference phone (cant find it now), it was not flat at all. it was a verryy gentle hump, and big roll off on bass and treble. The paper said they used a diffusion field eq with the DT48, I think there is a standardised Diffision field eq for it to make it flat. Im guessing most of the pros use it. It's been aorund donkeys years and is the standard. So they stick to it.

Pretty much all my orthos have needed heavy damping. The exception seems to be the T50v2, which with the normal T50 damping (two discs of mineral wool) and some circumaural pads they sound quite good. I think all I need to do is experiment with circumaural pads to find the most compatible one.

Heh you went from massive relfex strip and damped the f' out, to no damping! There is damping from some added magnetic effects?

You and stock Yamahas!! Your the kind of person they needed in the 80's to keep their ortho programme afloat