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The Headphone Driver Pics Thread - Page 20

post #286 of 314

I should have been more clear I think it is for breaking up standing waves/that type of thing but who knows. Curious though no matter  what :)

post #287 of 314

I'm gonna post some pics of a pair of dud weird looking drivers ripped from a vintage Pioneer headphone (probably the only person on headfi to own it) for you guys to identify later today.

post #288 of 314

The AKG K 160 has one dot, right in the middle.

post #289 of 314

It's disconcerting how alike drivers from different manufacturers look.

post #290 of 314

Pictures as promised, the top pair are duds, if anyone can ID any other headphone that have used them (weird construction too, 45mm diameter 32ohm, 96db /mW max 100mW), please PM me.

 

 

 

 

 

post #291 of 314

I thought the dots might be used as an identifier - perhaps the more dots the better quality the driver.

As far fetched as it sounds, it's not far from the actual truth.

post #292 of 314

Koss TD85 55mm ~ 50 ohm, before driver vent mod, before it's new Stax home.

 

Yamaha YHE-50A

 

Tiny little thing ~ 38 - 40mm.


Edited by nick n - 10/27/13 at 5:12pm
post #293 of 314

Beyerdynamic DT75 Special Edition

 

 

 

As you can see in the first pic, the drivers are glued to the baffles, so I couldn't get a proper photo of the diaphragm.

I would have posted these photos sooner, but this is the 2nd set of DT75's I've owned, and my first set was in pristine condition, so I didn't want to pry around inside and risk any damage. 

This one had TOTALLY flat rotten pads, so I gutted out the rotten foam, cleaned off the gunk with spirits, put in some new foam and took these photos in between.

 

I'm actually surprised at how little of the diaphragm is exposed because these actually sound pretty good. 

post #294 of 314
Quote:
Originally Posted by MassiveTurboLag View Post
 

It's disconcerting how alike drivers from different manufacturers look.

Well dynamics may look a lot alike, but there are a LOT of factors design wise that look trivial/miniscule and cause massive differences sonically. 

 

And remember this rule; a headphone's sound is about 20% driver and 80% implementation; there's no reason for them to look much different. Put an HD800 driver in another housing and I guarantee it'll sound horrible.

post #295 of 314

Here's something gorgeous: A gold plated dynamic from the Sony DR-M5:

 

 

50mm diameter, with an odd petroleum jelly like lubricant around the edges of the driver.

 

 

Interestingly, this was the first foldable portable headphone from Sony and it actually has damping and latticing in the cups (!!!), presumably to make the headphone isolate better. Unfortunately, not only is the headphone rarer than hen's teeth and kind of meh sounding but it was also sold to me recabled, missing pieces, with the headband on backwards and with one diaphragm completely ripped out of the cup. Delightful.


Edited by takato14 - 12/1/13 at 7:59pm
post #296 of 314
Quote:
Originally Posted by takato14 View Post
 

Here's something gorgeous: A gold plated dynamic from the Sony DR-M5:

 

 

50mm diameter, with an odd petroleum jelly like lubricant around the edges of the driver.

 

 

Interestingly, this was the first foldable portable headphone from Sony and it actually has damping and latticing in the cups (!!!), presumably to make the headphone isolate better. Unfortunately, not only is the headphone rarer than hen's teeth and kind of meh sounding but it was also sold to me recabled, missing pieces, with the headband on backwards and with one diaphragm completely ripped out of the cup. Delightful.

 

 

I have those hps for a few years now and they sounds great, remind me of the HD-25 but more balanced. 

post #297 of 314
Quote:
Originally Posted by takato14 View Post

 

 

 

*_*   those drivers are mezmerizing!

post #298 of 314
Quote:
Originally Posted by takato14 View Post
 

Here's something gorgeous: A gold plated dynamic from the Sony DR-M5:

 

 

Interestingly, this was the first foldable portable headphone from Sony and it actually has damping and latticing in the cups (!!!), presumably to make the headphone isolate better. Unfortunately, not only is the headphone rarer than hen's teeth and kind of meh sounding but it was also sold to me recabled, missing pieces, with the headband on backwards and with one diaphragm completely ripped out of the cup. Delightful.

Beautiful Drivers

post #299 of 314
Quote:
Originally Posted by Neighbour View Post
 

pro4aaatHV1a.jpg

 

pro4aaatHV1a_b.jpg

 

The left one from the current Koss pro4 Series with Titanium coating. The right one from the HV/1A series from 1974. Booth have the same diameter size about 57mm and a fully compatible design. 

The left picture of the backsight of the pro4 shows above the dampening venting material.

The HV driver has a huge magnetic structure and weight a bit more.The plastic frame is also better quality made. From the sound the HV outperforms the pro4 in every aspect.

 

Strange, my 4AAAT's diaphragm looks far different than that, its a very bright and vibrant silver with a subtle rainbow tint. It also sounds superior to the vintage KOSS Pro drivers in every aspect...

 

 

 

I'd take pictures of the bare drivers but I literally CANT get these pads off for some reason.

 

Which headphone did yours come out of? A modern 4AA? A 4AAT? Either that or KOSS changed them, likely for the better...

 

EDIT: Here's some better pictures.

 

 

The rainbow tint is difficult to capture on camera, unfortunately.

 

 

From right to left, KOSS Pro drivers series 1-4.


Edited by takato14 - 12/21/13 at 5:17pm
post #300 of 314

sennheiser hd560

 

LEAD Technologies Inc. V1.01

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