Author Topic: DIY Fullrange Speaker Driver  (Read 9002 times)

ghemml

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DIY Fullrange Speaker Driver
« on: September 13, 2016, 15:58 »
A project that started out in late 2015, its been ding dong here and there. Here are some of the progress of the development.



Sizing of the motor using Neo Magnets



AutoCAD design and sending for fabrication



The Hamburgers looking motor
« Last Edit: January 21, 2017, 18:12 by ghemml »

ghemml

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Re: DIY Speaker Tranducer
« Reply #1 on: September 13, 2016, 15:59 »


Design and fabricating the Basket
« Last Edit: September 13, 2016, 18:00 by ghemml »

ghemml

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Re: DIY Speaker Tranducer
« Reply #2 on: September 13, 2016, 16:00 »

Designing a mold and jig for the folding of the cone



Gluing up the cone and the voice coil

ghemml

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Re: DIY Speaker Tranducer
« Reply #3 on: September 13, 2016, 16:01 »

Add in the whizzer cone and the overall weight

Offline synthesis

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Re: DIY Speaker Tranducer
« Reply #4 on: September 13, 2016, 16:30 »
Kool!!  :)

Offline DIYer Straits

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Re: DIY Speaker Tranducer
« Reply #5 on: September 13, 2016, 21:20 »
Awesome! And some people say locals cannot make it.
Audere' Est Facere'    COME ON YOU SPURS.......
Laptop via XMOS
Khadas Tone DAC
Technics SL1200Mk2 (Modded) : Magnepan Unitrac : AT 33PTG/AT ART7
Ortofon T30 MC step-up, Custom MM WAD Phono3S Tube Phonostage/DACT CT100 (modded)
Custom 6N5P/6N6p Aikido Preamplifier
Modded TPA3118 Class D amplifier/Modded TPA 3255 power amplifier/Anaview AMS1000 power amplifier/KT88 SE
FAST with a 6.5" Satori mid and a 12" Pro woofer/Some Satori in birch ply cabinets with a PR/KEF R300
To be updated

Offline studioaux

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Re: DIY Speaker Tranducer
« Reply #6 on: September 13, 2016, 22:20 »
Impressive!

Offline ht.chua

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Re: DIY Speaker Tranducer
« Reply #7 on: September 13, 2016, 23:37 »
Fantastic!

Offline ericsec

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Re: DIY Speaker Tranducer
« Reply #8 on: September 14, 2016, 15:40 »
Wao.... this is cool. Gave me a jap style feeling. 8)

Offline noinimod

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Re: DIY Speaker Tranducer
« Reply #9 on: September 14, 2016, 16:56 »
Amount of work that went into this - true labor of love! How many engineering man hours spent on it so far?

ghemml

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Re: DIY Speaker Tranducer
« Reply #10 on: September 15, 2016, 11:29 »
Thanks...

Cannot recall how long it took me to design and fabricate, all I know is it all started in 2015. I have to design jigs and fixtures just to fold the cone.

But I have no idea how this transducer will perform, and I still testing with the types of glue I can find locally and online.

Paper wise I got from Japan. Even paper is difficult to source.

Offline j45yip

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Re: DIY Speaker Tranducer
« Reply #11 on: September 15, 2016, 13:00 »
ML, really awesome looking drivers. Don't mind asking what's the strength of the magnet?
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ghemml

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Re: DIY Speaker Tranducer
« Reply #12 on: September 15, 2016, 13:05 »
Its a N42 magnets.

I should have got the 1 inch height rather than this 1/2 inch height

Offline jaffrie

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Re: DIY Speaker Tranducer
« Reply #13 on: September 15, 2016, 17:33 »
Wow bravo what a gallant effort.
This is the difference between boys & men . Lol

Offline DIYer Straits

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Re: DIY Speaker Tranducer
« Reply #14 on: September 15, 2016, 21:32 »
What surrounds will you use? Corrugated paper, foam or something more exotic?

I remembered that the Stamm series LothX drivers used foam and later on corrugated paper. They also used a folded paper ring rib behind the cone, to stiffen it up.
Audere' Est Facere'    COME ON YOU SPURS.......
Laptop via XMOS
Khadas Tone DAC
Technics SL1200Mk2 (Modded) : Magnepan Unitrac : AT 33PTG/AT ART7
Ortofon T30 MC step-up, Custom MM WAD Phono3S Tube Phonostage/DACT CT100 (modded)
Custom 6N5P/6N6p Aikido Preamplifier
Modded TPA3118 Class D amplifier/Modded TPA 3255 power amplifier/Anaview AMS1000 power amplifier/KT88 SE
FAST with a 6.5" Satori mid and a 12" Pro woofer/Some Satori in birch ply cabinets with a PR/KEF R300
To be updated

Offline studioaux

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Re: DIY Speaker Tranducer
« Reply #15 on: September 15, 2016, 22:20 »
Leather surrounds like the Diatone full-range?

ghemml

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Re: DIY Speaker Tranducer
« Reply #16 on: September 15, 2016, 23:52 »
will be using foam

Offline boring

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Re: DIY Speaker Tranducer
« Reply #17 on: September 16, 2016, 12:11 »
Using Japanese Washi paper for the cones?

ghemml

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Re: DIY Speaker Tranducer
« Reply #18 on: September 16, 2016, 12:19 »
Hemp paper

ghemml

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Re: DIY Speaker Tranducer
« Reply #19 on: September 16, 2016, 17:39 »
I can actually build my own surroundings, but that I need another jig. So I got off the shelves foam surrounding to use for the moment.

ghemml

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Re: DIY Speaker Tranducer
« Reply #20 on: October 09, 2016, 18:30 »


Phenolic damper (Spider)

ghemml

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Re: DIY Speaker Tranducer
« Reply #21 on: October 09, 2016, 18:36 »
<a href="http://www.youtube.com/v/wJiISz05rM8&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/wJiISz05rM8&fs=1</a>

<a href="http://www.youtube.com/v/p_G_IzEHVc4&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/p_G_IzEHVc4&fs=1</a>
« Last Edit: October 09, 2016, 18:41 by ghemml »

Offline DIYer Straits

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Re: DIY Speaker Tranducer
« Reply #22 on: October 10, 2016, 13:52 »
Audere' Est Facere'    COME ON YOU SPURS.......
Laptop via XMOS
Khadas Tone DAC
Technics SL1200Mk2 (Modded) : Magnepan Unitrac : AT 33PTG/AT ART7
Ortofon T30 MC step-up, Custom MM WAD Phono3S Tube Phonostage/DACT CT100 (modded)
Custom 6N5P/6N6p Aikido Preamplifier
Modded TPA3118 Class D amplifier/Modded TPA 3255 power amplifier/Anaview AMS1000 power amplifier/KT88 SE
FAST with a 6.5" Satori mid and a 12" Pro woofer/Some Satori in birch ply cabinets with a PR/KEF R300
To be updated

Offline boring

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Re: DIY Speaker Tranducer
« Reply #23 on: October 10, 2016, 17:37 »
Looks like you went with another spider. Nice!

ghemml

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Re: DIY Speaker Tranducer
« Reply #24 on: October 10, 2016, 20:00 »
Pervious phenolic is GR10 flexural strenght is too weak, i then use phenolic LE

ghemml

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Re: DIY Speaker Tranducer
« Reply #25 on: December 19, 2016, 11:59 »



<a href="http://www.youtube.com/v/NgK6_dMnQ_M&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/NgK6_dMnQ_M&fs=1</a>

<a href="http://www.youtube.com/v/yknElRvIITc&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/yknElRvIITc&fs=1</a>
« Last Edit: January 05, 2017, 19:00 by ghemml »

Offline VFMs

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Re: DIY Speaker Tranducer
« Reply #26 on: December 19, 2016, 13:11 »
great effort and very good sound..

ghemml

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Re: DIY Speaker Tranducer
« Reply #27 on: December 19, 2016, 23:12 »
Thanks, i still have a few more stuff to smoothen it out before the actual design finalization.

ghemml

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Re: DIY Speaker Tranducer
« Reply #28 on: January 04, 2017, 12:40 »
Getting ready for phase 2 design


Offline boring

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Re: DIY Speaker Tranducer
« Reply #29 on: January 04, 2017, 14:02 »
Seems like this iteration got a bigger spider diameter

ghemml

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Re: DIY Speaker Tranducer
« Reply #30 on: January 04, 2017, 14:37 »
Spider diameter remain the same, the bigger base is for the field coil motor

Offline arithon

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Re: DIY Speaker Tranducer
« Reply #31 on: January 11, 2017, 20:35 »
absolutely cool project!!  ;D

ghemml

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Re: DIY Fullrange Speaker Driver
« Reply #32 on: March 12, 2017, 22:23 »
Another 6.5 inch cone using different paper



Offline jaffrie

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Re: DIY Fullrange Speaker Driver
« Reply #33 on: March 13, 2017, 01:07 »
wow hats off to you Sir.
May I ask, who does the machining
work the basket ?

ghemml

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Re: DIY Fullrange Speaker Driver
« Reply #34 on: March 13, 2017, 07:50 »
wow hats off to you Sir.
May I ask, who does the machining
work the basket ?

Thanks, i use cnc milling to machine the speaker basket.

*Never read your question properly. Machining done in Malaysia.
« Last Edit: March 13, 2017, 12:31 by ghemml »

ghemml

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Re: DIY Fullrange Speaker Driver
« Reply #35 on: March 13, 2017, 12:47 »
@jaffire, I don't have a fix vendor for my fabrication work. But for metal you can ask "steed" from this forum.

ghemml

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Re: DIY Fullrange Speaker Driver
« Reply #36 on: March 15, 2017, 17:02 »
Cone construction completed


[
« Last Edit: March 15, 2017, 17:04 by ghemml »

Offline tmaseq

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Re: DIY Fullrange Speaker Driver
« Reply #37 on: March 25, 2017, 02:37 »
Hey ML

Look great, sound clear I like.
LM219 | Custom 12AX7 preamp | Marantz CD72 Mk II SE | TDA1541A NOS dac | Thorens TD 165 | Lenco L75, L78, L75S | ifi iPhono phono pre | Diy Visaton B200 + Visaton BGS40 open baffle speakers | Sanyo Plus Series T55 tuner | Clones Audio 25pm monoblocks + AP! pre | Khozmo dual mono passive preamp | Diy LS3/5a type mini monitors

ghemml

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Re: DIY Fullrange Speaker Driver
« Reply #38 on: March 25, 2017, 20:02 »
Thanks :)

Offline puremilk

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Re: DIY Fullrange Speaker Driver
« Reply #39 on: April 29, 2017, 19:41 »
No listern,no comments! : :o

Offline hasbro

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Re: DIY Fullrange Speaker Driver
« Reply #40 on: July 28, 2019, 20:34 »
bros. i agree. so so his stuff....