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Home-Made IEMs
Oct 27, 2014 at 5:44 PM Post #2,297 of 16,107
mike m said:
 
Pretty clever, thats a pretty dern good way to A/B test in your ear
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Thanks
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First idea :
ED29689 with a green filter at 8mm into a 10mm Ø1.5mm tubing and 30ohm resistor
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The dynamic driver is just here for bass and sub !
 
Oct 27, 2014 at 6:10 PM Post #2,299 of 16,107
acain said:
Is that 2 places that you can connect your headphone wire?
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Yes, The dynamic driver is connected directly to the faceplate connector and the ED29689 is connected to the regular connector.
... to externalize the XO filter.
 
I will try to adjust the Dynamic driver to add a slight bass body and solid tight sub to the ED29689 (in full range configuration)
 
Oct 27, 2014 at 10:53 PM Post #2,301 of 16,107
Everyone should post there driver setup and there crossover design. A lot of people ask about crossover information. I know it varies but it would help others for some starting points.
 
Oct 27, 2014 at 11:55 PM Post #2,302 of 16,107
piotrus-g said:
  Damn that's neat picture :D
 
BTW. looks like fitting MMCX is soooo much easier than 2pin connector.
Click to expand...

 
The MMCX connector has its own set of challenges but I think the advantages are worth it, I have switched over to MMCX for my last few builds and I plan to keep using it.
 
The 2 issues that you need to plan for when using MMCX are anchor strength and clearance for the cable connector end. 
 
The connecter takes considerable force to connect and disconnect and on my first attempt at using MMCX I didn't have it attached firmly enough on the inside of the shell, I ended up pushing the connectors into the shell when I attached the cable. I had to drill small holes in the shell so that I could add more acrylic around the connector to act as a strong attachment point.
 
The other issue is that you have to make sure that there is enough clearance around the connector for the cable to fully attach, you can achieve this by having the connector stick out from the shell a little ways but depending on what cable you are using, this may not look nice, my current method is to have the connector protrude slightly and then build up the acrylic around the connector in order to hide it when the cable is attached.
 
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