Just listened to some Fostex T50RPs today... WOW! - Page 654

I dont think anyone sells premodded for less than 250$ . If you would like to mod yourself apart from the modding material you will also need a accurate digital scale. A measurement mic with phantom powersupply. If  you do mic and phantom powersupply by yourself then the modding material , scale and mic would cost you 60$. Add shure pads and you will be at 180$ and lot of your time.
I think in sales section I saw a premodded for £60 from UK you can get those and mod them to your liking.

Cheers guys, it looks like it time for me to do some more research but it looks like I'm in the £160 ($250ish) range, probably a bit more realistically.
I'm not sure about second hand, I would quite like to hear them first and if they have been modded I don't know if they are damaged at all.
Do I really need the microphone bits?
And does it matter if I use tr20/40 or the 50's.

You don't need the scale or Mic unless you were trying to replicate a recipe precisely. But even then, it probably wouldnt measure identically. You are tuning the headphones to your taste since everyone hears differently. I don't necessarily want a headphone that measures perfectly, I want a headphone that sounds great. Do one mod at a time and learn what it does to the sound. This way you know what to change if you don't like it.

That's the answer I wanted, great advice about doing one mod at a time, I would of probably just gone the whole hog.

 

I've been trying to source a cheap seller of T20RPmk2s for a while now, I found one on eBay but he has since gone AWOL over the New Year. The Shure840 pads, the cheapest I've found 'in-stock' (juno constantly being out of stock for me) is thomann.de.

I agree.  Do one mod at a time with the intention of eventually getting to DBV #3.  You definitely don't need a scale.  I did my mod entirely without a scale or a microphone and I can tell absolutely no difference between my pair and BMF's "real" DBV #3.  I used a different brand of acoustic foam, different cotton, and different modeling clay than he did, too.

I have an inkling that the clay doesn't matter at all.. and that the acoustic foam and the specifics of it probably doesn't matter much. I think you could probably get away with just dampening and felt over the driver. Those would be the first mods I would do, if I was doing it again.

I think Juno order the 840 pads on request. They did with my 940 pads anyhow.

Re: the acoustic foam, I noticed a rather large difference between using closed cell foam(makeup applicators) vs silverstone acoustic foam, FWIW.  I don't think the type of clay matters too much, and, for that matter, you could probably get away with using anything to fill in that space(and change the volume of air in the housing) and dampen the housing.  Dynamat on the outside + silicone in place of clay would probably work just as well.

Just found the t20,40,50rp at £65,71,94 respectively at outpostdistribution (don't know about tax and postage)


Cheers

Ignore these prices, need to add vat and £13 postage
Edited by jiminy - 1/2/13 at 4:53pm

Could someone please direct me to the correct place to learn about custom cup creation? E.G What type of material to use for the cup, thickness of cup, space inside cup behind driver. I have searched around this thread a bit but have failed to find anything relevant to me.

 

Check this thread

http://www.head-fi.org/t/501773/thunderpants/975

Does anyone know if the T20RP/T40RP/T50RP are discontinued? I've been told by 3 sellers now that they are and I'm near sweating here, this cannot be the case right? Hopefully I'm not fear mongering.

Edited by eltocliousus - 1/3/13 at 3:29pm

I wanted to add some more bass to the fostex t50rp. I have already done the simple mods such as using clay to fill baffles and cotton damping. What other mod could add bass?

please god no