Home-Made IEMs
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ForceMajeure
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Don't know what does 1964 drivers or UE drivers mean as every iem have different drivers and configuration.
The HE-31751-000 is a combination of CI and ED with premade crossover driver sold by Knowles you can find frequency response without damping here
http://www.knowles.com/eng/content/download/5919/103115/version/6/file/HE-31751-000.pdf
The GK-31732-000 is another combination of CI and TWFK with premade crossover
Knowing the ED and TWFK you can assume that the HE (with the ED driver) will have a higher SPL around 2.5khz so mids in that range will be a bit more forward/present in comparison to the GK that will probably have a bit more sparkle at 5khz .
Just measured the impedance of the hybrid - not sure if I setup the Limp program correctly though.
Edit: Calibrated correctly...the impedance on the WBFK is nearly 0..
Edit: Calibrated correctly...the impedance on the WBFK is nearly 0..
UNOE
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I understand all that. I'm just wondering what price range other CIEM manufactures would charge for something that has similar sound quality to HE and GK? Or if anyone knows if they compare to any models from UE or 1964 strictly from sound quality comparison, not comparing sound sigtures.
Just measured the impedance of the hybrid - not sure if I setup the Limp program correctly though.
Edit: Calibrated correctly...the impedance on the WBFK is nearly 0..
That's super strange graph for impedance plot, but I was sort of right about the impedance swing.
ForceMajeure
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Just measured the impedance of the hybrid - not sure if I setup the Limp program correctly though.
Edit: Calibrated correctly...the impedance on the WBFK is nearly 0..
something looks wrong here
ForceMajeure
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UE5 pro had similar drivers to the HE no idea what they used to charge for it
1964ears v2 also
I'm guessing this should be correct as my UERM impedance graph looks the same as the one Rin Choi posted on his blog.
ForceMajeure
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When you connected your uerm to the jig an measured it with limp you got similar results as this?
When you connected your uerm to the jig an measured it with limp you got similar results as this?
Yup, just like that.
It's probably due to me using high impedance bass drivers.
Edit: isn't the UERM impedance swing even larger than my IEM? o.O
ForceMajeure
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can you explain again your config and crossover
Dynamic 8mm - 26ohm
BK21610 - 165ohm
WBHC23910 - ~60ohm (resistor in parallel)
WBFK30095 - 14.5ohm
Dynamic 8mm titanium - 10ohm + 33uf low pass
BK21610 - 22uf high pass, 10uf + 20ohm + 10uf low pass
WBHC23910 - 1uf low pass, 2.2uf + 100ohm + 2.2uf high pass
WBFK30095 - 0.1uf high pass
Tested this config pretty much by ear
It's likely a poor config.
ForceMajeure
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Dynamic 8mm titanium - 10ohm + 33uf low pass
BK21610 - 22uf high pass, 10uf + 20ohm + 10uf low pass
WBHC23910 - 1uf low pass, 2.2uf + 100ohm + 2.2uf high pass
WBFK30095 - 0.1uf high pass
Tested this config pretty much by ear
oh wow haha even JHaudio doesn't do such complicated config with his inductors...
May be your computer out have a different output impedance, have you tried to listen to it on your phone or another source? The zx1 is a weird dap sometimes.
Also the fact that you used band pass filters on those high impedance driver means, that they will now have a much lower impedance overall as you are using a smaller part of their frequency range, now it all depends if it's in their resonance range (higher peak of their impedance).
Try to measure their frequency from the zx1 and from the computer and compare.
Haha, just wanted to try something more fun
But guess it didn't work out..I actually tested it on 2 other sound cards. They sounded fine, just like my HA5000 (which has output impedance of 0.1ohms). However, on any phone/computer I tested they sounded absolutely horrendous. Actually the computer out I can barely hear anything else except the bass.
Seems like the class D amps don't work with these..
Nope. Your highest point is 24 and lowest around 1 Ohms = that's 24:1
UERM has 66-68 to 8 so it's 8,5:1
It's also very complex crossover, probably more complex than it actually needs to be. 0.1uF on WBFK gives you cut off frequency at around 21kHz so you may want to use bigger cap.
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