post your grado mods....
Feb 26, 2024 at 7:01 PM Post #8,986 of 8,992
I decided to rid my RS-1x of the 3.5mm plug which frustrated me to use along with the 6.5mm adapter.


Great Job!
Have you checked pin 2 - 4 if there‘s a short cut? There are rumors about being so with the new x-series cables.
First time I heard this, I checked 1st ring to 3rd on the 4.4 plug I soldered to my RS2e. There is no connection.
Maybe it‘s just a rumor, maybe it wasn’t with the e-series 8- and 12-cores. (Did a GS to XLR4 to a friend.)
 
Feb 26, 2024 at 7:18 PM Post #8,987 of 8,992
Great Job!
Have you checked pin 2 - 4 if there‘s a short cut? There are rumors about being so with the new x-series cables.
First time I heard this, I checked 1st ring to 3rd on the 4.4 plug I soldered to my RS2e. There is no connection.
Maybe it‘s just a rumor, maybe it wasn’t with the e-series 8- and 12-cores. (Did a GS to XLR4 to a friend.)

On my RS-1X all 8 conductors go from the earcups to the plug:

2 red = L+
2 white = R+
4 blue which are the negatives for both channels.

Using a multimeter (Fluke 87), I determined that there are two pairs of the blue conductors because all 4 are not shorted together. Once I figured out which the two pairs are, I put the headphones on and briefly tested (with the Fluke set to ohms) across red (L+) and one pair of blue and then the other. When I heard a "click" in my ear, I knew I found the proper pairing. I only ever hear the 'click" in one channel at a time and only with one specific conductor pair.

I verified the same with the right channel. The RS-1X has its channels independently wired making it easy to run it legitimately balanced.
 
Last edited:
May 5, 2024 at 1:53 AM Post #8,989 of 8,992
Hey all,
I just got the 225x and want to add 3.5mm sockets and use a balanced Meze cable with them, I know nothing about what to solder to what end, does anyone have a picture or diagram for soldering ?

The cable I plan on using

Thanks !
What kind of 3.5mm sockets are you using? Mono or Stereo? I found that 3.5mm sockets don't last very long for use in headphone cups and depending on what type you use can intrude into the cup too much. For Grado's I've stayed with SMC connectors, small, secure connection, and no enlarging of the hole going into the cups.

Soldering info if using TRS sockets: (+) is the "T" and (-) is usually the second "R"
If using TR sockets: (+) is the "T" as before and (-) is the "R"
 

Attachments

  • Woody-225i-2.jpg
    Woody-225i-2.jpg
    1 MB · Views: 0
  • SennGrado-inside-3.jpg
    SennGrado-inside-3.jpg
    735.6 KB · Views: 0
  • SennGrado-SMC-1.jpg
    SennGrado-SMC-1.jpg
    1.6 MB · Views: 0
May 5, 2024 at 4:09 AM Post #8,990 of 8,992
What kind of 3.5mm sockets are you using? Mono or Stereo? I found that 3.5mm sockets don't last very long for use in headphone cups and depending on what type you use can intrude into the cup too much. For Grado's I've stayed with SMC connectors, small, secure connection, and no enlarging of the hole going into the cups.

Soldering info if using TRS sockets: (+) is the "T" and (-) is usually the second "R"
If using TR sockets: (+) is the "T" as before and (-) is the "R"
Just got these, stereo 3.5 female connectors for the task
 

Attachments

  • Screenshot_20240505_110812_AliExpress.jpg
    Screenshot_20240505_110812_AliExpress.jpg
    204.8 KB · Views: 0
May 5, 2024 at 5:59 AM Post #8,991 of 8,992
You will have to drill/enlarge the slot in the cups to fit those, not sure if you really want to do that but if I were doing it I'd enlarge the inner cup slot to allow the jack to fit slide through and enlarge the outer slot just enough to let the threads to pass so you can still use the nut to secure it. I would also use some hot glue to hold the jack to the inner cup. See attached pictures, hope this helps
 

Attachments

  • 20240504_235718.jpg
    20240504_235718.jpg
    1.2 MB · Views: 0
  • 20240504_235402.jpg
    20240504_235402.jpg
    1.2 MB · Views: 0
May 5, 2024 at 6:54 AM Post #8,992 of 8,992
Just got these, stereo 3.5 female connectors for the task
I used similiar 3,5mm connectors in my Grado sr225e mod. They've been good and solid so far. Be careful though with hot air and cup separating, I made mistake using heat gun too close and plastic got deformed. Lucky that driver survived. Ended up buying wooden cups.

I prefer to confirm pin layout with multimeter and 3,5mm - 3,5mm cable. I connected positive to TIP, and negative to GND. RING not connected. You can use RING instead of GND as negative, I don't know which one is correct/commercial standard. I've made/modded all of my cables, and decided that I use gnd as negative.
 

Users who are viewing this thread

Back
Top