[Butterfly]

Just finished these

I can see a pretty sharp bend of the tubes. How do you prevent the tubes from knodding? That has happened to me a few times.

 

[Butterfly]

Just finished these

What dampers did you use?

 

[BadgerMcBadger]

Anytime you sand or prior to your first coat, you use alcohol to remove dust, lint, debris, oil from fingerprints, etc. This makes your laq adhere better with no haze and makes it flow evenly.

and washing it with water wouldnt do that just as well?

 

[Butterfly]

and washing it with water wouldnt do that just as well?

I use the alcohol too.

 

[swtnate]

and washing it with water wouldnt do that just as well?

Windex, soap and water, etc will all work to clean dirt anf grime. 99% alcohol is a must for post cure wipe downs in order to remove any residuals.

 

[musmecca]

and washing it with water wouldnt do that just as well?

Oil from fingers is not water soluable....

 

[BadgerMcBadger]

very helpful. thanks guys

 

[Butterfly]

very helpful. thanks guys

Get this one

 

[swtnate]

Get this one

95% is not concentrated enough. If you want to get resin residue or lacquer residue removed post curing, 99% is a must to cut through it.

 

[GeneBush]

My shells are haunted!
Did it happen to any of you guys that you do a good crossover, with a good set of drivers and it sounds good when you try it outside your shell and as soon as you put it in a shell, boom, the freq response changes shape even if you isolate complitely the tubes pouring some acrylic to fill the nozzle. It happens only in the higher frequencies(the tube is not kinking)
I'm desperate

 

[mattmatt]

My shells are haunted!
Did it happen at any of you guys that you do a good crossover, with a good set of drivers and it sounds good when you try it outside your shell and as soon as you put it in a shell, boom, the freq response changes shape even if you isolate complitely the tubes pouring some acrylic to fill the nozzle. It happens only in the higher frequencies(the tube is not kinking)
I'm desperate

Mind showing us your iems? We may help you better when we see your build.

 

[swtnate]

My shells are haunted!
Did it happen at any of you guys that you do a good crossover, with a good set of drivers and it sounds good when you try it outside your shell and as soon as you put it in a shell, boom, the freq response changes shape even if you isolate complitely the tubes pouring some acrylic to fill the nozzle. It happens only in the higher frequencies(the tube is not kinking)
I'm desperate

If soldered more than 2 to 3 times, could be overheating the drivers.

 

[stegeoc]

My shells are haunted!
Did it happen at any of you guys that you do a good crossover, with a good set of drivers and it sounds good when you try it outside your shell and as soon as you put it in a shell, boom, the freq response changes shape even if you isolate complitely the tubes pouring some acrylic to fill the nozzle. It happens only in the higher frequencies(the tube is not kinking)
I'm desperate

Is it possible it is just the way you are measuring it? How are you measuring in and out of the shell? You might find that there is a significant difference in volume and insertion depth between the two measurements

 

[Armodeus]

I made a pair of IEMs using the GV-32830 and got great results using dampers, as the GV has an excellent amount of bass/sub-bass, a sweet, smooth and balanced sound. It doesn't sound flat at all, quite the opposite!

I have tried several proposed combinations of RAB, GQ, GK and in the end GV is the best and finest sounding to my ears, ready to go and easy to build driver, I only use one tube and one damper, and fit it into a 10mm shell, since I don't tolerate those large shells inside my ear, they feel uncomfortable, that's why I never use those shure Aonic 5, and the sound of the Shure drivers is bad imo, the sound of the Knowles drivers is superior!

 

[Butterfly]

Interesting post, I'm about to make a pair of IEMs using the GV-32830 and I expect to get good results using dampers and a tuning circuit.

I did not consider the GK-31732 since it is said in this thread that the GV driver is a much better choice with vastly better mids. And that the CI drivers do not produce a satisfactory bass.

I have made earphones using GQ + RAB or 2x RAB and I wonder how a GK driver compares against GQ-30783 + RAB-32257?

The GK-33211 you mention is not sold by any vendor that I know of and doesn't appear to exist on the Knowles page either.

I can help you to the 33211.