3D printed Carver style tweeter part 2 - Foam and coils ?

[@liamclauti2876]

Really love what you are creating! I've been thinking about making ribbon tweeters for some time given the simplicity of materials needed and you are giving me the Inspiration to actually start. I think you are nailing it and will soon have some incredibly satisfying tweeters. Congrats!!!!!

[@joppepeelen]

nice !! yes please people go out and create as well !! hope you get something working as well ! the more the better !

[@arthurspieker1031]

Cannot wait for new results in your experiments! Love to hear it live...but I do not have Facebook and such...to buy you a coffee and talk about it..

[@joppepeelen]

well you can always send me an email or donate at my patreon if you like (make sure you click one time only if you do not want to give me a coffee every month) www.patreon.com/c/user?u=10933765

[@chrishilgers6405]

Hey Joppe, nice research work there. As a constructive idea for your damping problem: Maybe you can choose the distance for each magnet proportional to the extrusion to the foil for more linearity of the moving part. Only the outer parts are tangentially, but the inner parts of the foil are farer away from the magnets- the magnet assembly is bowing away from the foil up to the mid point and reaching back. As the magnetic field should be not as big at the midpoint, less movement would occur and there would also be more space for movement. This would mean to think about 3d foam and 3d printed parts.. you could also try to fold the foil in an unregular pattern, where the mid part has less ripples to get rid of the harmonics, as standing waves could be reduced. But this would mean to build a new roller setup..

[@joppepeelen]

Yes I often do this in other designs. But good idea anyways ! In this one could do the same by adding the front magnet except for in the middle

[@new-kids-on-the-block]

You are doing A Very Good Job my friend

[@joppepeelen]

Thanks. well i did not hit the perfect foil/width/foam height/foam width :) aah well we will see just print and laser and plot some more !

[@jasonkilo8167]

Try running the foamy bits through your corrugated rollers. Them match it to the membrane.

[@joppepeelen]

that wont work i am afraid :) they will not hold shape, and will not hold the same shape if they did :)

[@jameswarren1831]

You might also try foaming TPU?

[@joppepeelen]

well i do have TPU filament but its far harder then a foam like this.. and these foams seem to be already a balancing act :(

[@jameswarren1831]

@ I’ve never tried the version of TPU they claim as “foam”

[@Shanachie707]

Well two things I would try instead of go foam: Felt wood fiber insulation board And also try a flat stretched diagram

[@joppepeelen]

i will try flat stretched. but with foam damping on sides. since a flat one i made 2000 times kind of know, it will never reach as low. in normal fashion :) about other damping. yes it can work but by the looks of it no foam has benefits and some foam has. so i think there might be a middle way. that might be wider foil and foam etc or more foam support (if i have my new foril to make the membrane wider so it can actually use that extra foam) so many things to try :) and noone know what actually works :( so trial and error i think ! to many things to try... and i have to start somewhere. dont get me wrong as a tweeter at regular crossover it already works pretty fine. but it wont hurt to see if we can improve it a bit :)

[@ChangLRC]

What do you think is the largest planar possible? do you think a larger plane would cause a breakup or the resonance of a huge 20-foot planar would be too low to be useful?

[@joppepeelen]

i made faaaaar larger :) but they are meant for low end , watch the rest of my videos. bass need large foils. tweeters need small ones because of dispersion. i made a few from 40hz and up to 10Khz 300-10khz or tweters

[@phuocnguyen8774]

Have you patented this ribbon speaker?

[@joppepeelen]

There is nothing to patent :)

[@audiumline4615]

Show. 🎧👀👍

[@Gersberms]

Wouldn't it be better to measure from ~500 Hz and up for your tweeter distortion figures? The numbers seem so high but I realized a lot of those frequencies are not relevant.

[@joppepeelen]

yes it would ! even higher since they will never be used at 300 or 500 :), a regular tweeter might be crossed at 2 or 3 Khz :) only reason i did use incredible low crossover,. was to see what happend .. since i had that weird rissing 3e harmonic . mainly because it looked to smooth for been just distortion :)

[@jko7337]

I think that you must not corregated the membrame…….

[@joppepeelen]

It is something i am thinking about.. i wanted to make a foil with the same Foams, just pushing slightly against the mylar without it been corrugated, and using no extreme tension on the foil :) so i will be testing it it !! (width of the membrane must be bugger though, and i can only make this when i got my new alu foil. since this one is not wide enough)

[@virsuus]

Bro, your videos are great but I would like them to be more useful, for example, post the source files!

[@joppepeelen]

since it uses 3d print files i might if i decided what worked well for me. its useless to post 50 files right now :)

[@el3ndiill]

hey , make new planar headphones with knowledge which you gain, i am waiting, i could pay for fastest way to achive good quality

[@arthurspieker1031]

What is your email?

[@joppepeelen]

[e-mail]