"Open Alpha" T50 3D printed headphone project from MrSpeakers
Dec 27, 2020 at 10:13 AM Post #738 of 979
Dec 27, 2020 at 11:44 AM Post #740 of 979
Excellent, thanks mate.

Edit: the first link is AK-PAX-2, the second one is AK-PAX-1...are they definitely the same?
Pax-mate 2 is a new version of Pax-mate 1. They have the same thickness 4mm, i am not sure any better damping for small dimension of the cups. I would use the less expensive and save money, but it is up to you. Either one is alright.
 
Jan 4, 2021 at 7:42 PM Post #741 of 979
1609807312430.png

Urushi is fun.

Sanding for a couple hours after it's been cured is...not LOL
 
Jan 28, 2021 at 10:53 AM Post #743 of 979
Jan 30, 2021 at 1:09 PM Post #745 of 979
Thanks buddy.
I've had a quick look but the only ones I could see on there (with 3.5mm connectors) were the ones with the 'bass screw' modification.
Ideally I want to keep these as close to the Mr Speakers originals as possible (but with 3.5mm connectors).

It could well be the case that I didn't search thingiverse thoroughly enough, so I'll have another look on there.

I created a modified version of the original bass port design, which used a 2.5mm connector. I believe a 3.5mm connector would work as well. Mine have reinforced screw bosses to prevent them from twisting off so easily. (I have also created reinforced versions of the original hirose model and the @Balazar screw model with hirose connectors.)

I also made a one-piece baffle that works well if printed vertically and a few printable templates to help with cutting the soft parts. I posted the TinkerCAD links a long time ago, but I just now uploaded all these to Thingiverse as well.

Thingiverse link (all files):
https://www.thingiverse.com/thing:4743583

TinkerCAD links:

Left Cup (2.5 mm jack, reinforced):
https://www.tinkercad.com/things/cJ1mDoeQ3Wt

Right Cup (2.5 mm jack, reinforced):
https://www.tinkercad.com/things/a9SVYG23nyC

Left Cup (Hirose jack, reinforced):
https://www.tinkercad.com/things/ac2ObwHCaCz

Right Cup (Hirose jack, reinforced):
https://www.tinkercad.com/things/bFkIVDMiapl

Left Cup (Hirose, Balazar bass adjustment screw, reinforced):
https://www.tinkercad.com/things/ktqwlRUPsY5

Right Cup (Hirose, Balazar bass adjustment screw, reinforced):
https://www.tinkercad.com/things/aRpowoEi5KQ

One-piece Baffle:
https://www.tinkercad.com/things/aB857ReKDy8

Ear side felt cutting template:
https://www.tinkercad.com/things/67PFtjAkzmN

Cup gasket cutting template:
https://www.tinkercad.com/things/0oTNXVKIY0O
 
Jan 30, 2021 at 1:13 PM Post #746 of 979
I created a modified version of the original bass port design, which used a 2.5mm connector. I believe a 3.5mm connector would work as well. Mine have reinforced screw bosses to prevent them from twisting off so easily. (I have also created reinforced versions of the original hirose model and the @Balazar screw model with hirose connectors.)

I also made a one-piece baffle that works well if printed vertically and a few printable templates to help with cutting the soft parts. I posted the TinkerCAD links a long time ago, but I just now uploaded all these to Thingiverse as well.

Thingiverse link (all files):
https://www.thingiverse.com/thing:4743583

TinkerCAD links:

Left Cup (2.5 mm jack, reinforced):
https://www.tinkercad.com/things/cJ1mDoeQ3Wt

Right Cup (2.5 mm jack, reinforced):
https://www.tinkercad.com/things/a9SVYG23nyC

Left Cup (Hirose jack, reinforced):
https://www.tinkercad.com/things/ac2ObwHCaCz

Right Cup (Hirose jack, reinforced):
https://www.tinkercad.com/things/bFkIVDMiapl

Left Cup (Hirose, Balazar bass adjustment screw, reinforced):
https://www.tinkercad.com/things/ktqwlRUPsY5

Right Cup (Hirose, Balazar bass adjustment screw, reinforced):
https://www.tinkercad.com/things/aRpowoEi5KQ

One-piece Baffle:
https://www.tinkercad.com/things/aB857ReKDy8

Ear side felt cutting template:
https://www.tinkercad.com/things/67PFtjAkzmN

Cup gasket cutting template:
https://www.tinkercad.com/things/0oTNXVKIY0O
Interesting...Ive finished my first pair, but there are a few slight imperfections that I'd like to address in my second attempt.
I'll definitely be taking a look at your modified designs.
Thanks.

Out of interest what are you using to make the gaskets from?...in the end I managed to cast a couple in silicone using a mould I made, it was a complete pita, but they worked out pretty good all things considered...they make tuning so much easier now.
 
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Feb 3, 2021 at 8:19 AM Post #747 of 979
Glad to see that this thread is still alive.

Does anyone have 3d files for 4 pin mini xlr earcups (audeze, zmf style) instead of the traditional hirose?
 
Feb 21, 2021 at 5:41 PM Post #748 of 979
A friend of mine printed these for me using PLA (and the original files). They look a bit rough on the inside, and considerable clean-up to do on them (started half-assed on one of the cups). I should have used the modified files with the adjustable bass port, etc. Do these look worth the effort for clean-up and use? It looks like I will need to drill the screw holes out, but that isn't a problem. I'll probably get some of the McMaster Carr screws (in stainless) and use those. I don't know much of anything regarding 3D printing. I have a couple of pairs of T50RP Mk2s, so one set will get modified into Open Alphas... maybe both of them dependent on how that goes. I prefer the Hirose connectors; the pair of Massdrop HE4XXs I had with 2.5mm cut out everytime I moved my head. The 3.5mm version I had Massdrop replace them with were better, but I got rid of them as I liked my modded T50s better.
 

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Feb 22, 2021 at 2:16 AM Post #750 of 979
@Pars yeah they don't look too bad. fdm 3d prints are never going to look great straight from the printer. Get yourself some primer, some paint, and a range of different grit sandpapers.
The main problem with PLA is it is a nightmare to sand...it takes ages.
My first set were PLA, then for the second set I used PETG which is much more forgiving.

Supports are an absolute nuisance, but a neccessity unfortunately.
 

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