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DIY Planar headphone by using tweeter

post #1 of 7
Thread Starter 

oneday, I found planar headphone and planar tweeter have same operation method.

It gave me inspiration and convince me that can use to headphone.

So, I am searching some planar tweeter in taobao.

It's price is only 20~ 35$ for each unit, I think this price is very cheap.

 

 

specification

 

unit : hivi rt1.3

measurement system : panasonic wm61a (I using BMF's circuit)

housing : rosewood and finished by shellac

hairband : hifiman fake

 

housing drawing

http://i.imgur.com/XZ5uKf0.png?1

 

housing assembly 1

http://i.imgur.com/L6nK04t.jpg?1

 

housing assembly 2

http://i.imgur.com/AJtAgmu.jpg?1

 

housing assembly 3

http://i.imgur.com/frY1pzF.jpg?1

 

finished

http://i.imgur.com/vbAW6LO.jpg?1

http://i.imgur.com/MnEnaUl.jpg?1

 

frequency response

http://i.imgur.com/ZB90tE8.png

my soundcard is ALC892 so I couldn't mesure it exactly under 150Hz and over 17khz.

I can find little difference comapre left with right because diaghram was stabbed when I assembled it.

 

 

total is about 170$ because I almost used 70$ to housing

if you use plastic housing, you can make it about 100~120$

 

I'm not good at English so if you find out some error in writing, please point out it


Edited by Autumnwind - 4/2/14 at 9:36am
post #2 of 7

Excellent work!

 

I'm guessing this is the planar tweeter that you used: http://www.parts-express.com/hivi-rt13-planar-isodynamic-tweeter--297-412

 

Do you think a similar HiVi tweeter (that isn't out of production) would work in your design as well? Perhaps one of these:http://www.parts-express.com/Search.aspx?keyword=hivi%20ribbon&sitesearch=true


Edited by OJNeg - 4/5/14 at 9:52am
post #3 of 7
Thread Starter 

yes that is what I use.

 

other hivi tweeter's diaphragm was too small.

 

planar tweeter have nice straightness.

 

So if you use other hivi's tweeter your headphone's frequency response is dramatically chaged by position of tweeter

 

I recommended this product

http://www.madisoundspeakerstore.com/ribbon-tweeters/hi-vi-rt1.3we-isodynamic-tweeter/

 

it is almost same unit compare with rt1.3.

 

fianally if you want to use it to headphone you need some modification

 

I will post it as soon as possible

post #4 of 7

Very interesting, wished I could hear those DIY headphones. Always interesting what people can make themselves. 

post #5 of 7

Didn't realize it was on Madisound. Thanks for the heads up! I might start playing around with something like this in the near future. :beerchug:

post #6 of 7

Vary nice, do you have other orthodynamic (aka planer magnetic) headphones to compare the sound with? This reminds me of the spi tweeter ortho mods from a couple years ago.

post #7 of 7
Thread Starter 

thank you for your compliment.

unfortunately, I don't have any other headphone. This is my first headphone.

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