Back to the Spectroid issue...I downloaded a noise generator app, I can play white noise through the iMM-6 and an IEM (attached in an air tight fashion to the microphone with a piece of hose) and Spectroid sees the sound, but I've tried every setting in the Spectroid app (With waterfall turned...

At this stage they aren't vary transparent since they've been sanded with 400, 600, 800 and 1200 sand paper, but when the Laq 3 clear finish is applied they become see through clear....at least the red and blue ones do. The black Fotoplast is translucent too,, but I don't expect the black to be...

Thanks! I mentioned the first working pair, if you hold them about 5 feet away and squint they look great, but up close they are UGLY! lol Not 3d printed, done the old way with impressions, investments and Dreve Fotoplast. The blue faceplates were made in clear silicone molds I created , I guess...

On a side not, here are a couple of pics of progress...shells and face plates still in lightly sanded state ready to drill sound tube holes and load drivers. I have one working pair, not real pretty and a good lesson on what not to do in the finish stage, but now finally getting close on a few...

Spectroid/Dayton iMM-6 questions.. I've see posts and videos on connecting the iMM-6 microphone to a phone and various ways of attaching an IEM to the microphone with tubing etc. I have Spectroid loaded on my Android phone and have played with it going through all the settings. The iMM-6 mic...

I have a NEJE laser engraver, much larger than needed for this kind of work, but I figured I may use it for other projects. I've used it on various shell colors created from Fotoplast. For the record, if you ever want to use a laser engraver on translucent UV created shells, the power and speed...

Yeah I don't know what to expect. I found some copper clad board on Amazon, but even the thinnest I could find was still about 1.5mm thick, way overkill. I ran across an ebay seller that had some old stock thin PCB. It was about 8 1/2 x 11 inches and is pretty flexible. I measured the thickness...

I see what you're saying. That makes sense, and easy enough to route those to the connector during the build. I appreciate the input!

So I have all the parts and pieces to build the piotrus-g scary crossover build. I'm going to use size 1206 SMDs. I found some thin pcb material, it's been years since I etched a pcb, and even thin it was a crude regular sized board, nothing as small a this is going to be. In the pic below...

Thanks Tony! That gives me some ideas on how to make mine taller. I was using the nail light in the regular way (bulbs facing down), except I replaced the bottom plastic tray with a cut piece of mirror and had the rotating table underneath through a hole in the mirror. But it was so intense that...

I've recently used my nail light inverted like tonybuild's pics. I have one of those little turntables that I've used underneath the light with a hold drilled in the bottom plate, but using the light inverted with the turntable, a shaft extension for the turntable. So @tonybuild, how did you...

That is good info to know. Thank you sir! I'll have to play with my light setup and see if I can create a little distance or less reflectivity. It's a traditional nail light with four 9-watt tubes, not the newer LED version, so it does produce some pretty intense light. And that may change my...

I've been using PlatSil 73-15 two part clear silicone that is almost completely transparent once set if I degas it in the vacuum pot after mixing. I've noticed sometimes while curing under the UV light that as the Fotoplast S /IO starts to harden it will separate ever so slightly from the...

BA driver mounting/securing question... I know these don't function like traditional dynamic drivers, but when playing, do they generate any physical vibration at all, even if very very smalll? When it comes to securing them to the shell, does it make any detectable difference in sound/listening...

Agree on the assembly with pics, but understand the lack of time to do it. Seems like my in ear project always takes a back seat to something. But I finally have about 6 sets of shells that seat and seal well in my ears that are ready to trim and sand for faceplates, drill for tubing exit and...

@piotrus-g Hey you made a post way back in 2015 showing a schematic for a 4-way build with two CI-22955 and a TWFK-30017 with three resistors and three capacitors, I think referred to as 'scary crossover' somewhere else. This may show my ignorance in the matter a little, but on the schematic you...

On the GK-33211, I've been able to find the technical spec sheet online (the black and white 2 sheet spec with the CAD drawing) but haven't been able to find the color data sheet as I've been able to find for other drivers. Also not finding any GK-33211 for sale out there, even checked...

I second what Matt mentioned. The first successful ones I made, I only made them about as deep (protruding out from my ear) as the actual IEM would be. When you make the shell, the outer edge of the shell where the faceplate will eventually go will be rough and need to be cut or sanded down to a...

Check out this older post by Shilohsjustice for making faceplates out of fotoplast...Post #4,745 of 13,930 There are several post about other materials like wood for faceplates, or even guitar pics. You can really get creative.

Oh absolutely. That's exactly what put me on the path to custom iem's. I have some universal fit Westone UM Pro30s (that I love by the way) that come with a variety of tips. The little rubber cup tips never work for me, I like the roll up, insert and let them expand tips. On those, my ears...

About securing drivers to the shell, I can totally see why they'd need to be secured to the shell to prevent movement that could cause eventual tubing connection leaks, but does it matter if it's a 'hard' attachment to the shell (like UV resin or a hard epoxy) or a 'soft' attachment to the shell...

I have not heard of that problem. I did an number of searches on this thread for that driver and didn't see complaints. On your 5 pairs, did you leave the ports closed or open them? Of course I have no idea if one way of the other could remotely cause this, just curious. Hopefully others who...

Wow that's kind of cool. So if I understand, once it's set up and connected and running, I'm assuming the app generates a pink noise to send out the headphone output to the monitor, then uses the mic to listen to the monitor to compare it's output to the generated signal to create the graph? I...

All good to know. My impedance thought process comes from 25+ years spent working in the commercial low voltage world, installing intercom, local sound reinforcement, fire alarm etc. Dealing with 25 & 70 volt speakers (8 ohm speakers with transformers with multi-wattage taps), reading impedance...

I may not do this as the realized advantage probably won't offset the expense, but earlier I asked about running two GV's per side. Since then I did some research on the minimum headphone impedance of my Shure body pack which is 16 ohms. I have a set of Westone UM Pro30's (three drivers) that...