Home-Made IEMs
May 7, 2019 at 10:19 AM Post #8,911 of 15,978
Holy cow.
So would use one 2mmID tube of 12mm length, insert a 1.2mm ID/2mm length tube at 6mm, put a 1.2mm ID/4mm length tube at the nozzle of the driver and then put the 2mmID tube over that.

So it's like this (with a "-" being 1mm length, 1.2mm ID, and a "=" being 1mm legnth, 2mm id):

[DRIVER]----==--======
you are right


i did a opsie above
edited the post
i am sorry


[DRIVER]----==--========

ask @Choy Wei De how to do it...he is master of making tube resonator in the fastest ways possible
 
May 7, 2019 at 10:20 AM Post #8,912 of 15,978
Holy cow.
So would use one 2mmID tube of 12mm length, insert a 1.2mm ID/2mm length tube at 6mm, put a 1.2mm ID/4mm length tube at the nozzle of the driver and then put the 2mmID tube over that.

So it's like this (with a "-" being 1mm length, 1.2mm ID, and a "=" being 1mm legnth, 2mm id):

[DRIVER]----==--======

This is how i used 10mm 1.2mm and 7mm 2.0mm ID to make 11mm long total tube. Total overlap of 6mm.
But its all worth it.
 
May 7, 2019 at 10:23 AM Post #8,913 of 15,978
you are right


i did a opsie above
edited the post
i am sorry


[DRIVER]----==--========

ask @Choy Wei De how to do it...he is master of making tube resonator in the fastest ways possible

@eunice

It look something like this except the further 2mm from spout will be much longer.
c41c5108-b7d2-4bf5-aebc-7aceed6cd8c5.jpg
 
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May 7, 2019 at 10:30 AM Post #8,914 of 15,978

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May 7, 2019 at 11:32 AM Post #8,916 of 15,978
Thank you so much guys. I will try it.
well, it is just for added sound stage and reverb, just to add a pinch of musicality and color to sound. bass becomes more rumbly and region between 2kHz to 4kHz calms a down a little(very little). overtones are increased and the best part is that it doesn't mask the GQ(main driver), but sounds slightly delayed, adding this live like feeling

but imaging is compromised a little(just a little)
 
May 7, 2019 at 12:44 PM Post #8,919 of 15,978
But then my diagram is wrong. How should I connect the GQ if not in parallel to the zobel and the RAB?

According to my diagram the + of the audio source is connected to the cap of the zobel, to the + of the RAB and + of the GQ.
The - of the audio source is connected to the resistor of the zobel, to the - of the RAB and the - of the GQ.

So all three in parallel.

If that’s not correct I have to fix the diagrams.
 
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May 7, 2019 at 7:16 PM Post #8,925 of 15,978
This the diagram ?

If you disregard any resistance/capacitance or inductivity of the wires (which I think we can do) then that is all 3 in parallel. Or isn’t it?
Well, its better to try take measurements for what you are thinking because the above diagram you posted was sorta right, but I would have connected RAB negative to zobel and then passed it down.
Zobel is paralleled to driver before it goes into parallel with any other driver or is getting a crossover.

It is soldered on speaker terminal itself on some loudspeaker diy

Zobel has to correct RAB only
 

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