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Fostex T50RP Incremental Mods and Measurements - Page 139

post #2071 of 2159

Is anyone using the ZMF lambskin pads on their T50RP mk3?

post #2072 of 2159
Hey guys, just wanted to share this article from Inner Fidelity. It really takes apart the mk3 and gets down to the details of the differences between the mk2 and mk3s. Pictures, response graphs, and all


http://www.innerfidelity.com/content/diyers-delight-fostex-t50rp-mk3#ABReI04P3w7tcyGi.97



The baffle is very different. Very cool
post #2073 of 2159
I quite like the Mk3 for modding, personally. Pads are much easier to apply and remove, and the foam insert on the ear side of the baffle is much more ergonomic than the usual dynamat or Silverstone.
post #2074 of 2159

the mk3's with the ZMF cowhide pads will knock your socks off - not sure any modding is even needed with these 2" thick sub-bass beasts on here and soooo comfy

post #2075 of 2159
Quote:
Originally Posted by bluemonkeyflyer View Post
 

Measurement Kits

 

For anyone interested in measuring their headphone FR, distortion, CSD, etc, I have available 3 measurement kits I built, tested, and never used. They are the "Frans (solderdude) Improved Phantom Power Supply" (Dual Stereo version but works in Mono mode) installed inside Altoid tins. They are described at the top of Post 1 in this thread. I'll include a genuine "unobtainium" Panasonic WM-61A microphone with Etymotic IEM triflange tip and soldered 3.5 mm TRS plug.  You must have either a PC or Mac with 3.5 mm mic and 3.5 mm headphone out jacks OR a suitable audio interface.

 

Gear Chain:

WM-61A plugged into your ear > WM-61A 3.5 mm TRS > Phantom Power Mic IN >  Phantom Power 3.5 mm TRS Line OUT > PC or Mac 3.5 mm TRS Mic IN > PC or Mac 3.5 mm Headphone OUT > Headphones on your head

 

These measurement kits work with REW and ARTA.

 

Available for actual cost plus shipping. International OK.  PM if interested.

 

~ BMF

 

Update: All 3 measurement kits have been spoken for :-)

 

This is sold!!

 

If anyone is looking for a measurement kit, I am looking to sell mine that BMF built.  With a kid on the way and work going crazy I don't see any time to tinker on this in the foreseeable future, I would rather have someone using it than it sitting in my drawer.  I got it calibrated and made some measurements and its is really helpful to get an objective look at what your mods are doing.  Shoot me a PM if your interested.  

 

@bluemonkeyflyer  if you know anyone who was looking for one when you made the original post, let me know.  

 

US shipping locations only please!

 

 
This is sold!!

Edited by silvrr - 2/18/16 at 5:56am
post #2076 of 2159
Have there been any mods that open up the soundstage? I was thinking about drastically modifying some enclosures to give them a more open headphone sound. My only concern is that it will make the bass misbehave. Any thoughts?
post #2077 of 2159
Quote:
Originally Posted by silvrr View Post
 

 

If anyone is looking for a measurement kit, I am looking to sell mine that BMF built.  With a kid on the way and work going crazy I don't see any time to tinker on this in the foreseeable future, I would rather have someone using it than it sitting in my drawer.  I got it calibrated and made some measurements and its is really helpful to get an objective look at what your mods are doing.  Shoot me a PM if your interested.  

 

@bluemonkeyflyer  if you know anyone who was looking for one when you made the original post, let me know.  

 

US shipping locations only please!


PM me price info

post #2078 of 2159
Quote:
Have there been any mods that open up the soundstage? I was thinking about drastically modifying some enclosures to give them a more open headphone sound. My only concern is that it will make the bass misbehave. Any thoughts?

Mine have a wide, 'open' soundstage, I'm using the hm5 velours modded a la stratopad (do a search for it), no need to modify the enclosure. The FR looks like this:



Warm sound.
post #2079 of 2159

Using search tool in here for STRATOPADS proved to be completely useless as usual.

Went outside of here for a search and found this FYI

http://www.head-fi.org/t/618659/fostex-t50rp-incremental-mods-and-measurements/1470#post_11129039

post #2080 of 2159
That's the one!
BTW, I'm not using the extra ring of foam below the donuts, nor the felt discs, they were not needed in my case. Best to have a measuring rig to do fine-tuning wink.gif
post #2081 of 2159
Quote:
Originally Posted by wild bill View Post
 

Is anyone using the ZMF lambskin pads on their T50RP mk3?


I am, and I rate them highly. They need the T50's retuning because of the extra distance from your ear, but once that is done they are comfortable and sound great.

post #2082 of 2159

I am using the cowhide ZMF pads on the mk3's and all I can say is Wow!


Edited by wild bill - 2/18/16 at 2:57pm
post #2083 of 2159
Quote:
Originally Posted by c61746961 View Post

Mine have a wide, 'open' soundstage, I'm using the hm5 velours modded a la stratopad (do a search for it), no need to modify the enclosure. The FR looks like this:



Warm sound.
What did you do to the hm5 velours? Is the a place you got the foam or felt?
Edited by brokentofu - 2/18/16 at 1:27pm
post #2084 of 2159
nick n just linked to the thread where Stratocaster described his 'stratopads'. In short, sew socks in place of the pleather flaps that secure the pads to the headphone, this way the pressure is reduced and the @ ~100 Hz bass bloom is lessened. Stratocaster tuned this pressure release using a number felt discs between the baffles and the pad donuts, in my case I tuned this with internal damping. The mk3 makes this easier with its 'leaky' baffle, you can control the bloom by blocking or filtering the release of pressure in the baffle ports.
post #2085 of 2159

I was wondering if anyone has created a modification for T50RP MKIIs that allows you to more easily mount earpads? Some kind of baffle addition much like those found in the Alpha Dogs.

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