It's an iem that uses Knowles rab 32257 driver, and tube setup using resonator and horn technique and using electrical component to create Zobel network.

Anyone from Singapore or Msia? Used to make RAB-P myself. But got really busy with work and had no time to DIY or repair my own RAB-P. Willing to pay for your service to make a RAB-P.

You can offer me a house and a car for 20K. But I simply just cannot afford them. I get the very good price for that it offers. I can’t afford spending $50 at this point of time for a solder.

I want to declutter my workstation. So I try not too many things and big things on my table. And it’s not cheap for me anyway.

I have tested, if my temperature control is still working, at 300C the enamel do burn but need to give it some time. I believe at 350 or even 400 it will achieve the effect faster. Time to get a new solder.

I try to minimise the number of tools I need to make a iem. I can’t control the lighter very well anyway. I burned MMCX and some driver using 220V temperature control, but the control spoil. That’s why I changed to USB solder. My USB solder tip is small enough that I can start melting iron...

I’ll try to use a more powerful soldering later. I mainly use a 5V USB solder, because it heats up very fast and very easy to set up but I think it might not hot enough to burn the enamel.

I have a very basic question. For those who wire Zobel straight to the wires. Sometime I do suspect the way that I’m doing it does it even make the electric connection. All my wires are pre-cut to 3cm long, I don’t want to cut my wire into two. So what I did is to use the solder and try to...

@et.haan yes RAB 32257 with white filter. Unless you have a different preference.

I want to make a andromeda slayer!!!

I donno why, but Zobel on RAB makes all the difference to me. I can’t listen to RAB without Zobel. I have not tried other drivers with Zobel yet.

The Tommy store again!!! Haha. He has very good range of Sonion Drivers.

I have bad experience with this kind of wire downward and plug straight into the ear. I prefer at least at a angle like Xiaomi earbuds. I uses this, quite comfortable and good deal if you manage to find the right eartip.

Normal IEM maker will ask you to go for tip rolling, means try ‘every single’ ear tip in the market. I also have slightly picky ear canal, but I manage to find a few shells that suits me. Let me know if you have access to Taobao.

@homerograco The way I understand is very unique. A smaller ID tube is like a river with rushing water. The surface of the water is not travelling the same speed as underwater, not cohesive. When a river flow to a bigger tube, ‘pond’ or ‘lake’, the surface of the water slow down and back in...