Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › The "non-Grado" Driver Grado Thread
New Posts  All Forums:Forum Nav:

The "non-Grado" Driver Grado Thread

post #1 of 319
Thread Starter 

Purpose: To discuss driver alternatives that are being used within the Grado headphone cups.  This would apply to both custom wooden cups, as well as the standard plastic Grado or Alessandro cups, as well as Mahogany cups made by Grado. Again, the emphisis is on non-Grado manufactured drivers.

 


Direct links:

 

  (other names for Conrad.  Conrad Energy - they appear to make quite a few variations of 40mm drivers.  Some down to 8 Ohm, with 86dB efficiency.  Others can have 110dB efficiency with 32 Ohm operation.  Also, they might have 100 Hz or 150 Hz frequency cut-offs, too.

 

New Items: Updated 1/23/2014: While I did purchase these drivers and try them, they did not provide for a good impression.  I still prefer the Sennheiser PX100 II drivers as opposed to these two.

 

 


Other Grado Links / Resources:

 

 


FAQ:

 

Q: Should all posts in this thread be taken as pure fact?
A: No.  The purpose for this thread is for members who have used non-Grado drivers within Grado, or Grado-sized cup housings (40mm - 45mm).  This thread permits users to share their experiences with the non-Grado drivers and allows them to describe their impressions based on their efforts.

 

Q: Can we share our speculations and thoughts on certain drivers within this thread or suggest other drivers to test for fit, sound, etc.?

A: Absolutely!

 

Questions / Suggestions?  Please let me know if you have any.


Edited by wje - 3/29/14 at 7:17pm
post #2 of 319
wje,

Thanks for starting this thread. This will be helpful as well as specific to transplant donors and methods.
post #3 of 319

subscribed!

post #4 of 319

...subbed as well...

post #5 of 319
post #6 of 319
Thread Starter 

 

 

Thanks. As additional links get posted, I will try to keep the original thread updated with them, so we'll have an easy reference.  If you see that I haven't included the link at the top in the 1st post, or if you have other resourceful links, just PM me to remind me.  The door is always open ... :D

post #7 of 319
Subbed! Thanks for getting this one together! Gotta say, I'm a bit flattered you added my China driver post up top wink.gif. Hoping to get them sometime soon. I started turning my first set of cups and they were turning out great it then I realized that the initial cut outs I made with the hole saw were off by 1/4" in diameter! What?! Yep, feeling like an idiot as the measurement for a hole saw is to the outside of the saw cup, not the inner diameter. Scrap that block of Zebrawood. Oh well, this is how we learn. I know this thread is about the drivers, but if you want to see some pics if the cups I would be happy to post them up
post #8 of 319

So replacing sr60 drivers by PX100 II drivers would be good idea? I was thinking about buying TURBULENT X drivers instead but PX100 price is so damn good... Now i have hybrid chamber : driver housing is made from aluminium and the other part is made from mahogany, like in the ps1000, ps500 but reverse. What do you think?


Edited by pepku - 11/19/13 at 8:02am
post #9 of 319

Great thread, It might be nice to have a closed cup to test some of those non Grado drivers in, I think I'll work on one.

post #10 of 319
Thread Starter 
Quote:
Originally Posted by pepku View Post
 

So replacing sr60 drivers by PX100 II drivers would be good idea? I was thinking about buying TURBULENT X drivers instead but PX100 price is so damn good... Now i have hybrid chamber : driver housing is made from aluminium and the other part is made from mahogany, like in the ps1000, ps500 but reverse. What do you think?

 

No comment.  I'd hate for people to get the wrong impression.  ;)

 

Then again, this is the "non-Grado" Grado thread.  :D

post #11 of 319
Quote:
Originally Posted by 7keys View Post

Great thread, It might be nice to have a closed cup to test some of those non Grado drivers in, I think I'll work on one.

A classier StratoKOSSter? Perhaps we could refer to it as the Keyster? smily_headphones1.gif

Let me know if you need a tester, I have spent a good amount if time buggering around with Koss drivers....
post #12 of 319
Thread Starter 
Quote:
Originally Posted by 7keys View Post
 

Great thread, It might be nice to have a closed cup to test some of those non Grado drivers in, I think I'll work on one.

 

Actually, Sennheiser makes a closed version of the PX100 II, which is noted as the PX 250 II.  I'm not sure what the parameters are like for space requirements in the airspace behind the driver.  Or, not even sure if the driver used is the same as the PX100 II, or slightly different.  The PX250 II seems to run about $40 more -- in the $90 or so range.

 

I don't envision myself opting for the model MX250 anytime soon, though.

 

I would be curious as to how the Koss KSC drivers would work in closed cups, though.  I found them to be a bit "screechy" on the upper frequencies when used in Grado cups.  Also, the bass was falling a bit short of range where I'd like.  I then tried a small dab of Dynamat on the rear shells and noticed some "odd" things happening to the sound.  So, I reduced the amount of Dynamat quite a bit and just a very small amount on the backs of the shells, and then the sound seemed to come back a bit - yet, still a bit weak on bass, with a lot of energy in the upper frequencies.

 

I'm not sure what would happen if I were to just cut the back silver shells off the drivers with a Dremel?  If I were to liberate the drivers from the silver shell, the diameter of the driver would be quite a bit smaller and have trouble filling out the edges to fit into the cup and would have a lot of "slop" that would have to be filled with some other material.

post #13 of 319
Quote:
Originally Posted by fleasbaby View Post




A classier StratoKOSSter? Perhaps we could refer to it as the Keyster? smily_headphones1.gif

 

:):L3000:

post #14 of 319
Thread Starter 
Quote:
Originally Posted by fleasbaby View Post

A classier StratoKOSSter? Perhaps we could refer to it as the Keyster? smily_headphones1.gif

Let me know if you need a tester, I have spent a good amount if time buggering around with Koss drivers....

 

Classier as in diamonds on the cups?  Or, perhaps more bling as in chrome on the metal and plastic surfaces?

 

I get what you mean, though. A nice cut wooden pair of cups, leather headband, leather ear pad coverings, etc., etc.  It would be pretty classy with all the creature comforts that a headphone could offer.  I think I need to go through that whole thread a bit.  I'm not so sure my impressions of the Koss driver is quite as good as some others may feel.  Then again, I might be a bit jaded by the Sennheiser MX100 II drivers.  However, when it comes to a closed variation, I question how good the Sennheiser PX250 II would be.  It is about $90 and is a closed headphone, so the drivers are meant and built to operate within a closed can.  Then again, Sennheiser might be using the same drivers for the 100 and 250.  Hard to tell without seeing them side-by-side and listening to them.

post #15 of 319
I need to try some of the PX100 II...the KSC75 is technically an open driver, and it performs well closed...perhaps the PX100 would also, and prove to be better.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphones (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › The "non-Grado" Driver Grado Thread