1 hour build midrange - Crude DIY Planar Magnetic driver in 1 hour (no fancy tools)
Вставка
- Опубліковано 10 кві 2022
- I wanted to test single conductor vs double conductors practical efficiency gain. And i felt like making a simple planar like i used to do years back. no plotters cnc or plasma cutters used. just some hand tools.
It plays music in this video, for the fun of it. • 1 hour build midrange ...
The magnets used are meant for mid and low frequencies, as you can see (in the frequency response). the breakup caused by widely spaced out coil due to the magnet width is clearly visible.
the higher the tension or the smaller the distance the higher that breakup lands.
If you want to use rubber magnets to also do high frequencies the magnets need to be smaller in width and closer to the membrane. and having as high tension on the foil as you can.
Efficiency is really low. around 80-81 dB in the used frequency band witch is fine for many inefficient woofers i use to mate them with (usually there rated efficiency only shows up above 300 hz). or when i need to mate it to a big planar for low frequencies. - Навчання та стиль
Wow thats a quick and dirty build. Really enjoyed it.
Hey. Just had an idea ) Would you like to try a metallized foil and a low power laser to cut the wire in an aluminium layer?
Hi joppe, great works as always 👌. I have been working of my did planar headphones which isn’t really working due to my etching issues. Do you think the wire method would work for a headphone type of application?
Dont know, you can try ?, i never tried
Neat. Regarding options for wires/foils on the mylar, have you looked at using silver solder (wire)? The addition of metals like zinc raises the resistance. Plus it's easy to solder, of course. You can get spools of it, and it could be flattened if desired.
Its way tp heavy im afraid alu is the only option
I was planing to make a small headphone driver with 0,02mm enamelled copper wire and kapton tape but I wasn't sure how I should do the terminals. I think I will try the coppertape method that you use in this video. Seems to work very well and doesn't need much space.
you might want to swap out the copper wire for alumnium wire though. at least thats what i use here. it saves 40% weight. you can get some sizes at wires.co.uk
@@joppepeelen Wow, I've been looking for a source like this. They actually have almost everything, thanks for the tip. Unfortunately aluminium only seems to go as low as .45mm and CCAW to .38 which is going to be heavier than the .02 copper.
But if the copper ends up tearing too easily I will keep it in mind. I'm not really concerned with the weight because the 'panel' is going to be small (7x10cm).
Nice. Newb here. Is it connected straight from your amp to the speaker wire or are there any resistors or whatever? I’d like to try this but am not sure if I can connect directly to my NAD 3030. Don’t want to ruin my amp! Do you have plans and or a web site? Thanks…
In this case i know my amp can take 2.4 ohm if your amp cant. You can use 1 or 2 turns more on the coil and your anp should not have any troubles
How do sound frequency and wire thickness, wire length and spool coherent?
I am curious to build a planar magnetic subwoofer myself, but don't have any knowledge about speakers.
subwoofer might be the least doable. or become insane huge. dynamic drivers are better in that regard to play as sub. the question is a bit to large to give an awsner to im afraid. thick wire best for lower frequency. more power handling. length of spool in combination with thickness determens the impedance so it depends on how low of an impedance your amplifier likes to drive.
Nice ,
hihi well it does not look nice :) but its allot of fun :0
You might grain 3 dB but the lower resonance frequency might hurt as much as the extra coil helps. Is that realistic?
depends if you rely on the boost resonance gives, adding more wire drops res indeed. solution would tension harder. if you still want to use that boost. (although often not much controll in resonance area) its ok for bass since it gives allot in return and people are not really that good in hearing that. this is how most magnepans work. the tuning knobs divide that resonance a bit over a wider range. but it still has a noticeable resonance. you can use it or filter it :) (filter or damp would be the best... but at a cost of efficiency)
Getting dangerously close to those mini-maggies ;)
well these played down to 400hz usable. the mini's play down to 80 ? im not sure even then they are not much use at these frequencies, someone should measure them
@@joppepeelen The minis play down to 40 hz only because of the DWM bass panel that is on the floor. I think the minis themselves only go down to 200hz where they crossover with the bass panel.
Dear Sire!Where can I buy a rubber magnet? Please send me a link...A have 3 pair from original Magneplanar but I want one of my own construction.Thank You!
I dont know of any consumer store selling it. I sell rolls of 50 meters for 100 euro
you can contact me on FB under the same name. if your interested.
Hey. Just had an idea ) Would you like to try a metallized foil and a low power laser to cut the wire in an aluminium layer? Few passes will be needed may be...
A laser like mine or a c02 wont hurt aluminium:( it cant cut it. It has an improper wavelength to cut it. Besides that is metalised to thin to be useful for a conductor :(
@@joppepeelen I see...
> that is metalised to thin - can this fact be useful for making a headphone membrane, do you think?
I think its even to thin for that as well :(
What is the best wire to use for bass, mid ,and tweeter panels. Gauge for each, and copper or aluminum.
always alu, copper is a waste of efficiency, and i dont do gauges :) metric only. its not set i mean whatever you want. often used is 0.5- 0.6mm diameter for low end, and i dont use wires for tweeter duties but what i did use back in the day is 0.172mm . hope that helps
Thanks for your reply, I can't find enameled aluminum wire easily from Canada . Do you have a supplier that you use. I have everything else but the wire.
je zou er een DIY pakket van kunnen maken en te koop aanbieden op allerlei fora, geheid dat je het verkoopt.
dank je :) wel een vrij lelijk pakketje maar tja :) oooooit als ik ergens blij mee ben is dat wel het idee :)
Silly question maybe. Why no resistor for impedance?
not so silly i think :) i thought , ill compensate for it later :) lets goooo. i could have taken a look in my box of resistors indeed :)
@@joppepeelen Thx for the quick reply! I love love your videos man. Fantastico
You built a speaker, but did not play it for us?
I think i dus somewhere in most ugly contraption or somerhing like that :) haha
i need to devote a few hours to sit down and watch your videos - tons of knowledge - would love to hear some of your builds one day als ik ever naar nederland verhuis! (mijn beste duolingo-poging)
cheers (cabs84)
Thanks m8, sorry its such a mess :) and so much haha 400 video... of witch allot is not all that interesting :)
TS Parameters won´t work for planars (or magnetostatic speakers if you want to be scientific-accurate). There are not only Mms and Sd parameters which are not applicable. Whole theory behind planars is different from classical "cone drivers" and what´s funny - has never been defined in parametric way.