[GREQ]

I was never brave enough to open that baby up.... was in way too nice condition to be tinkering with it.
Looks awesome!
What pads are those? I hope they're giving you a bit extra bass.

 

[MrTechAgent]

I was never brave enough to open that baby up.... was in way too nice condition to be tinkering with it.
Looks awesome!
What pads are those? I hope they're giving you a bit extra bass.

Those are regular Brainwavz Velours.
It makes them brighter and IMO has very little change in the bass.

These old AKG drivers take EQ very well and the bass response is spectacular after it. They sound just like the Monitor but with more bass extension.

 

[MrTechAgent]

Foster/Fostex 40mm BioCellulose without Elastomer surround. The surround here is a basic Polymer, could be high thickness PET.



Alongside a Sony BioCellulose, vastly different Chemistry. The Mechanical properties are night and day, the Fostex is very, very stiff which is why it extends up top more than Sony BioCellulose. Also due to the surround the X-Max parameters are different as well.

 

[WallofHooligans]

Koss ESP6

 

[GREQ]

04.12.09
600129
Minisys
(290 ohms)
In tasty high res.

Old and beaten, but working.
It actually needs a new home too.

 

[WallofHooligans]

Something's wrong with the left driver in my Fostex t20s, so I opened em up to see what's happening. Looks like there's no major problems, but the ground ring looks a bit dirty, which is not to my liking. Here's hoping a little deoxit takes off the small dots on the ring. Anywho, here's the driver. A thing of beauty.

 

[ostewart]

Did anyone ask for toast? (philips fidelio X1)

 

[GREQ]

9mm Sennheiser cx3.00 driver

Maybe I should've used a paperclip for scale... and get a better macro set-up... after cropping these pics are about half a megapixel :/
These are glued in, so you will damage the driver beyond use and repair if you try to take these out.
Although not sure why anyone would get one of these anyway, with so many shockingly good chinese IEMs around now.

 

[MrTechAgent]

Beyerdynamic DT440 (600Ohm)



}

 

[Katze²]

Beyerdynamic DT440 (600Ohm)



}

Nice! Did you rip the baffle's acoustic resistor off or did it come like that?

Here are some pictures of the newer DT440s. They look alot like the DT250/DT150 drivers, however they are 32 Ohms and they kept the cotton dampener.

 

[MrTechAgent]

Nice! Did you rip the baffle's acoustic resistor off or did it come like that?

Yes, it comes like that.

 

[nick n]

Beyerdynamic DT440 (600Ohm)

Really makes me wonder how ANY sound can get past that pinholed driver face.
Pretty crazy stuff.
Imagine the amount of trials they would have had to do to find the right amount of flow.

 

[WallofHooligans]

Truly, beyerdynamic's old headphones are wonderfully designed. I hope that 40 years from now there will be another headphone looked at as fondly as we might look over a dt-48...
Here's hoping that it's a planar

 

[MrTechAgent]

Beyerdynamic DT440 (Redux)

damn, in my experience of repairing and modifying numerous Vintage headphones, this has to be the most fragile Transducer I have ever tackled. Just barely touched the contact pins and the VC lead detached. What a waste.

 

[GREQ]

That is rough.
Thanks for sharing this valuable information

Beyerdynamic DT440 (Redux)



.

This photo is quite solemn, with the headphone in the distance.