Hello! I did not post here for quite some time, but I've just finished my universal in-ear headphones now. Some of you were curious about the design and the sound, etc. Here is a picture of the headphones (with a temporary cord) and a frequency-response curve of the sound. To begin with, this...

Hey guys! Thank you very much! :) Right now, the way I have it set up is to a breadboard. However, SMD components are on the way, and will hopefully be able to produce a similar response (let's hope). I only use a single BA driver and at the moment I think the balance between bass and mids are...

Hello again! I have been trying to finish up the electronical notch-filter and it has worked pretty well! My problem, however, is that the high frequencies gets affected aswell. Here is a graph of the headphones before and after the use of the filter: The changes from around 4-5kHz all the...

Yes, it is definitely not THAT bad, but it is good to be able to see where the problem area is more clearly. I did use knowles and sonion filters, but I got better results using toilet paper. Though, either filters made the sound to be veiled. Here is another measurement with acoustic...

Thank you for the information! :) I am well aware of what kind of a sound I am after, and this is a big learning process for me. Though, I am very excited for it! Because I know that I can make this driver sound great with the right tools. I just need some help and inspiration to get there. I...

Well, the measurement is my own. And I used a compensated curve aswell. I have the Veritas II measurement microphone from this place: https://diyearphone.com/products/veritas-ii I used their own correction curve linked in that page. I know that the response seems exaggerated, but this sound is...

That is exactly what I needed! Thank you very much! :) As I said, I am very bad with these things. I will try your diagram right away!

The thing is, I thought I already did the same as on this diagram: I don't exactly know how I am supposed to connect the components in the right order... What is the difference between mine and this exactly?

I want a band-stop filter. To notch out a frequency between 2kHz and 5kHz. I can use the lowpass-filter okay by itself, like I connected it in my diagram. And I can use the highpass-filter okay aswell by itself, also like on the diagram. But when I connect both of them together like in the...

Thank you for the reply! :) I don't fully understand these things, I am very bad with electronics in general. I was just following this page and the diagram they have there. Maybe I connect everything wrong... http://www.learningaboutelectronics.com/Articles/Notch-filter-calculator.php#answer1...

Hello guys! I am back with some news about the progress. It has not turned out that great with the electronic filter. I have tried many different combinations of capacitor values and resistor values to make the best notch-filter. When I tried different combinations on a breadboard, I found a...

Thank you very much for the input! I have bought capacitors in the uF range now, hopefully that will be good enough. I also managed to figure out how to calculate the values of the resistors and capacitors so now I am back on track. It is good to know that the wattage doesn't affect anything, so...

Thank you very much! Now I just need to take out the breadboard and start testing. :) /Anders

Thank you very much for the reply! I was also thinking that the high values was being problematic, maybe also the wattage rate of the resistors might make a difference? I do not have the access, nor the tools to preform soldering with surface-mounted components, otherwise they would have been...

Hello! I am quite new to this forum but I have been lurking about for a while. I am building a pair of in-ear monitors using the Knowles SR-series of balanced armature drivers: http://www.knowles.com/eng/content/download/5775/92032/version/3/file/SR-32453-000.pdf If you can see in the...