The Headphone Driver Pics Thread - Page 11

     Quote:

Originally Posted by MDR30 

AKG K50 from 1959. "World’s first supra-aural, open-back, lightweight headphones." (AKG web site). Diaphragm 22 mm, voice coil 11 mm. Note that it's cone shaped, like a dynamic loudspeaker.

 

Its amazing how similar those vintage headphone drivers look to nowadays speakers woofers.

Quote:

Originally Posted by cifani090 

     Quote:

 

Its amazing how similar those vintage headphone drivers look to nowadays speakers woofers.

I LOL'ed at your comment, notice what MDR30 have already said. 

Also speaker design(specifically diaphragm) have mainly been like that since inception.

Here is the Driver out of a Vintage Stanton Dynaphase Fifty, and the smaller is from a Koss UR-40

Ignore the plexi circle, its another project im working on.

The GMP 400/450 Pro drivers: apologize for bad photo skills

That white circular thing on the middle of the driver is a layer of felt... couldn't get rid of the flash...

These are 50mm dynamic drivers with an impedance of supposedly 300Ohms...

However when I opened the headphones I found a little sticky on the back side of the drivers where it was printed 410 Ohms??

Anyway I want to know how would the drivers react if I covered those circular vent holes on their back?

Can anyone enlighten me?

These drivers are used on both GMP 450 Pro(closed) and GMP 400(open) and generally they have a tighter and quicker response on the closed version than on the open version...

The open GMP 400 has a weightier and looser bass than the GMP 450 Pro, which has more prominent higher frequencies...

The closed GMP 450 Pro enclosures are highly damped with foam with very little air volume inside...

I suspect that by covering some of those holes I can make the driver sound as tight and nimble on the open enclosures, not sure...

THOUGHTS, ANYONE?

THANK YOU!!!

Anyone want to hazard a guess about what driver is pictured in my avatar?

bone phones?

T1

MS Pro

Vintage DT880 600 ohm

Various Yamaha Orthos on Lux baffles

NAD RP18 (Kaplon)

The mighty Koss portables

Quote:

Originally Posted by kwkarth 

Anyone want to hazard a guess about what driver is pictured in my avatar?

Umm...it looks like an AMT? ESS AMT Mk 1? Probably not.

No idea why I haven't posted here yet. I have a few rareish headphones.

AKG K4

Vectorscan VSH-5 with grille removed:

Koss Technician VFR

Realistic Pro 50

Beyerdynamic DT48: (Creation date at the bottom of the driver. )

Quote:

Originally Posted by kwkarth 

Anyone want to hazard a guess about what driver is pictured in my avatar?

This is a driver from the Audeze LCD-2.

I was going to guess that, but I thought they looked a bit different. Cool!

Some vintage headphones (also for sale)

Quote:

Originally Posted by Germancub 

The back of those T1 drivers are sexy

Yeah but the inside of the cups sure isn't.  Is there really no damping of any kind?  :-o

Quote:

Originally Posted by rhythmdevils 


 Is there really no damping of any kind?  :-o
 

Nope, not any. Maybe one reason why they are so agressivly yelling onto my eardrums...