Fabric is glued on to a 3d printed grille. It's glued only from the concave center portion. From backside it's secured with a ring that clamps the fabric to the grille
Yeah, I have to make new pcb's and 3d printed part carriers. First iteration was a wasted 5 hours
Nice job! Just a small remark: kamu has some negative meaning in my language. Kamu comes from the French camouflage, I think. Anyway, if something is described as kamu, it means not real, deceiving, disguising. Looking as real while it isn't. If someone said something and it is kamu, it means he cheated. You would not be able to sell anything with the logo Kamu, at least in my country. You can buy a kamu camera for deterring burglars, etc. Just sayin'.
Apart from this I am jealous of the nice craftmanship.
Apart from this I am jealous of the nice craftmanship.
In finnish language kamu means a friend or a pal. It's also an abreviation of the words KAikkea MUovista that translates to anything out of plastic.
It's so comrade'ish that I'm going to design and release plans for 3d printed version, so anybody with a 3d printer can make a pair.
Crossovers now finnished.
Circuit board was hand milled with a dremel.
Holes were cut using the 3d printed mask/component carrier as a template.
Painters tape was apllied to solder points as a mask then whole thing was painted matte black, assembled and soldered.
Circuit board was hand milled with a dremel.
Holes were cut using the 3d printed mask/component carrier as a template.
Painters tape was apllied to solder points as a mask then whole thing was painted matte black, assembled and soldered.
Attachments
Tested the tuning today. It was a bit lower than expected. I was aiming for 47hz and end result was 40hz. Surely I can raise it a bit since the öast portion of the resonator is separate, but I've could have gone with a bigger port if I knew that tuning is going to lower. Apparrently measuring port lenght at absolute centerline produces lower tuning than intended. Go figure 😅
I took 2 bmr drivers and measured them in a wg close range so don't pay much attention of the shape of the fr. The whole idea is to compare drivers.
Apparrently they are of a constant quality. Another one is broken in and another isn't. They still do measure inside 1db so I'm not going to go through the rest of the drivers.
Apparrently they are of a constant quality. Another one is broken in and another isn't. They still do measure inside 1db so I'm not going to go through the rest of the drivers.
I assembled the speakers today and attached the logos. Still working on the grilles, but I can dive into the amps dsp tomorrow and take some measurements.
Final design iteration of the grille, but I need better glue. I used spray contact cement, but that seems to have tendency to loosen up when heat is applied. I tried with a hairdryer and sure enough the glue gave out.
Since I absolutely need a glue that actually hardens, I'm going try to get my hands on some spray ca and spray accelerator.
Maybe with that I dare to try with the brown fabric 😅
Since I absolutely need a glue that actually hardens, I'm going try to get my hands on some spray ca and spray accelerator.
Maybe with that I dare to try with the brown fabric 😅