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Home-Made IEMs
Apr 4, 2017 at 10:30 AM Post #6,346 of 15,996
xymordos said:
  Interesting, I never actually seen this design in IEMs before, other than ATH's dual phase drivers. Is this common in speakers?
 
Have you tried it before? For my design I didn't leave much space between the drivers, around only 1mm of space only, which might be why the bass sounds so soft. 
Click to expand...


I'm fairly sure you'll be able to find this solution for floor speaker subwoofers.
 
I did leave around 2mm space for tubing and it was enough to get pretty much whole spectrum out of it.
 
Apr 4, 2017 at 10:31 AM Post #6,347 of 15,996
Using both drivers in pushpull config (wiring one in reverse phase) one would gain from the magnetic flux in a small form factor with lower distortion and better harmonics, sure the drivers need to have great tolerances.
Now the question is, How would someone get the desire frequency range from using this technique though?
I am guessing JH uses smaller diameter bores to control the high pass and both 4.9mm drivers bass freq is controlled from the back damping of the drivers.
 
Or maybe is using reactive components for Low/High/Band Pass?
 
Apr 4, 2017 at 10:55 AM Post #6,348 of 15,996
J-breezy
But how will you take them out of the tube?
And, if they're fairly stiff, how do you get a decent seal between them and the tube?
I have all kind of acoustic tubing, from dreve, from egger, from aliex, from taobao, neither ff them fits the dampers.They're either a fraction too tight(i'm talking about the tubing), so the damper cant slide easily like the metallic ones, and get torn apart, because they are fragile and don't stand the force of pushing them into the tube, or they're either too loose and the damper isnt sealing the tube.
 
Apr 4, 2017 at 11:05 AM Post #6,349 of 15,996
For push pull, the ATH push pull drivers have a hole on the back of one of the drivers, and the sound comes from the back of one driver rather than between two drivers.
 
From what I heard in the video, both drives in the JH are running in the same phase rather than push-pull.
 
Apr 4, 2017 at 11:56 AM Post #6,350 of 15,996
andrumgt said:
J-breezy
But how will you take them out of the tube?
And, if they're fairly stiff, how do you get a decent seal between them and the tube?
I have all kind of acoustic tubing, from dreve, from egger, from aliex, from taobao, neither ff them fits the dampers.They're either a fraction too tight(i'm talking about the tubing), so the damper cant slide easily like the metallic ones, and get torn apart, because they are fragile and don't stand the force of pushing them into the tube, or they're either too loose and the damper isnt sealing the tube.
Click to expand...


Why would you want to take them out of the tube once they are in?
And the dampers were definitely a bit on the looser side going in (compared to the metal ones) so its probably not creating a perfect seal but I figured if the damper was in there at all then it would have to block some of those frequencies lol. Idk. All I know is that I put them in using stiff copper wire as my pusher and while it may not be a perfect seal, the damper is tight enough in the tube that it's not going to be moving around. I'm using Westone #16 tubing but I would assume all #16 tubing would be the same in diameter.
Someone else might be able to answer some of this better and there's probably a better process. I'm just experimenting but my triple sounded good when I got done with it so I was happy.
 
Apr 9, 2017 at 8:22 PM Post #6,355 of 15,996
I'm trying to make a cable for my IEM's.  Can anyone advise if these two are good choices?  Or if there is anything better for wire or connectors.
 
0.78 2 pin
https://www.aliexpress.com/item/0-78mm-Earphone-Cable-Pin-For-UM-Unique-Melody-Miracle-Merlin-Mage-Mentor-AERO-Marvel-MASON/32461395121.html
 
Wire
https://www.aliexpress.com/item/1-3m-Semi-finished-400-Wires-Extreme-Soft-Silver-OCC-Alloy-Signal-Teflon-AFT-Earphone-Headphone/32662248946.html?ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10068_10130_10150_10136_10137_10060_10138_9999_10062_10141_10056_10055_10054_10059_10099_129_10103_10102_10096_10148_10147_10052_10053_10142_10107_10050_10143_10051_10084_10083_10080_10082_10081_10110_10111_10112_10113_10114_10078_10079_10073_10070_10123_10124-9999,searchweb201603_6,afswitch_1,ppcSwitch_5&btsid=3a297b3d-0a0e-4e7a-a024-a1d800c96528&algo_expid=c024a84b-5542-4204-a4b4-a24d2ad08db0-25&algo_pvid=c024a84b-5542-4204-a4b4-a24d2ad08db0
 
I'm confident I have the right jacks already and 3.5mm connector.  I'm just not certain if wire would be good for the price.  I like copper sound signature.  So would even consider a better copper if I knew were to get it.
 
Apr 9, 2017 at 11:32 PM Post #6,356 of 15,996
unoe said:
  I'm trying to make a cable for my IEM's.  Can anyone advise if these two are good choices?  Or if there is anything better for wire or connectors.
 
0.78 2 pin
https://www.aliexpress.com/item/0-78mm-Earphone-Cable-Pin-For-UM-Unique-Melody-Miracle-Merlin-Mage-Mentor-AERO-Marvel-MASON/32461395121.html
 
Wire
https://www.aliexpress.com/item/1-3m-Semi-finished-400-Wires-Extreme-Soft-Silver-OCC-Alloy-Signal-Teflon-AFT-Earphone-Headphone/32662248946.html?ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10068_10130_10150_10136_10137_10060_10138_9999_10062_10141_10056_10055_10054_10059_10099_129_10103_10102_10096_10148_10147_10052_10053_10142_10107_10050_10143_10051_10084_10083_10080_10082_10081_10110_10111_10112_10113_10114_10078_10079_10073_10070_10123_10124-9999,searchweb201603_6,afswitch_1,ppcSwitch_5&btsid=3a297b3d-0a0e-4e7a-a024-a1d800c96528&algo_expid=c024a84b-5542-4204-a4b4-a24d2ad08db0-25&algo_pvid=c024a84b-5542-4204-a4b4-a24d2ad08db0
 
I'm confident I have the right jacks already and 3.5mm connector.  I'm just not certain if wire would be good for the price.  I like copper sound signature.  So would even consider a better copper if I knew were to get it.
Click to expand...

Question is, how soft the wire is? And, will it turn green over time (the silver color part)?
This need to be checked. Usually teflon insulation is less supple than TPE insulation if I am not mistaken but the description says it's "Extremely Soft ,Low Elasticity, Low Stethoscope Effect, And easy to soldering"
That wire looks good though. I guess you'll have to buy it to check for us :) ...
 
Apr 10, 2017 at 12:13 PM Post #6,358 of 15,996
unoe said:
  I'm trying to make a cable for my IEM's.  Can anyone advise if these two are good choices?  Or if there is anything better for wire or connectors.
 
0.78 2 pin
https://www.aliexpress.com/item/0-78mm-Earphone-Cable-Pin-For-UM-Unique-Melody-Miracle-Merlin-Mage-Mentor-AERO-Marvel-MASON/32461395121.html
 
Wire
https://www.aliexpress.com/item/1-3m-Semi-finished-400-Wires-Extreme-Soft-Silver-OCC-Alloy-Signal-Teflon-AFT-Earphone-Headphone/32662248946.html?ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10068_10130_10150_10136_10137_10060_10138_9999_10062_10141_10056_10055_10054_10059_10099_129_10103_10102_10096_10148_10147_10052_10053_10142_10107_10050_10143_10051_10084_10083_10080_10082_10081_10110_10111_10112_10113_10114_10078_10079_10073_10070_10123_10124-9999,searchweb201603_6,afswitch_1,ppcSwitch_5&btsid=3a297b3d-0a0e-4e7a-a024-a1d800c96528&algo_expid=c024a84b-5542-4204-a4b4-a24d2ad08db0-25&algo_pvid=c024a84b-5542-4204-a4b4-a24d2ad08db0
 
I'm confident I have the right jacks already and 3.5mm connector.  I'm just not certain if wire would be good for the price.  I like copper sound signature.  So would even consider a better copper if I knew were to get it.
Click to expand...

 
I made several cables from a similar wire. Acrolink 53x0.05 strands from the same seller. Wires look great and did not turn green with time.
To my regret, they all had a stethoscopic effect. However, this did not stop me from selling them to people who heard noticeable sound improvements compared to standard cables. =)
 


 
Maybe 100x0.05 will be better. I'd like to try. Later.
ForceMajeure is right: you should try this cable and tell us=) Not such a great price.
 
Apr 10, 2017 at 12:54 PM Post #6,360 of 15,996
unoe said:
Thanks everyone for the answers I'll probably try it out.

What do you mean by stethosopic effect?
Click to expand...
Microphonics/cable noise.
 
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