3D Print

Dedicated to those large boxes at one end of the room
Post Reply
User avatar
rowuk
Old Hand
Posts: 257
Joined: Sun Jun 01, 2014 2:50 pm
Location: Germany

3D Print

Post by rowuk » Sun Mar 03, 2019 5:13 pm

I bought a 3d printer as a Christmas gift to myself and have been busy making trumpet and cornett mouthpieces. Now my playback has its turn. I have printed a couple of 3Khz horns for my compression drivers. I will crossover somewhere above 5K. The left is tractrix and the right is spherical. They are printed in PETG.
Attachments
Tweeter horns.JPG
Whenever I feel blue, I start breathing again.

User avatar
IslandPink
No idea why I do this anymore
Posts: 6535
Joined: Tue May 29, 2007 7:01 pm
Location: Denbigh, N.Wales

Re: 3D Print

Post by IslandPink » Sun Mar 03, 2019 10:52 pm

Nice !
But a 3kHz horn is really short, isn't it !
I have done a few jobs, eg. some fins for a Yuichi horn, using 3D-printing.
I have a cosmetic cowl thing for ribbon tweeters just about to be made for the OB speakers- at work ( oops ! )
The mechanical designers are very good to me.

I rather like the idea of making something like an elliptical tractrix 1.5kHz horn using 3D print.
I have Radian Be 745's that need using for something ( goddammit ! )

What's your system concept now ?
"The bass is the king of the instruments - it has no known natural predator" (Wobble)

User avatar
rowuk
Old Hand
Posts: 257
Joined: Sun Jun 01, 2014 2:50 pm
Location: Germany

Re: 3D Print

Post by rowuk » Mon Mar 04, 2019 5:44 pm

Actually my concept has not changed for over 30 years: don't change anything unless you can describe what is wrong and why a change would fix it. I have tried for several years to integrate the magnetostat tweeters and have given up. They remain conspicuous. So I have a defined issue and the opportunity to approach a solution that is similar to what I am doing below 8khz.

My current system has 2 Fane Colossus 12" Neodymium woofers in a 2.5D configuration, a 400Hz elliptical midrange. First order crossovers around 800Hz. On the top are 2 Infinity EMIT HE per side from the IRS Beta. They have prenty of extension and low distortion, but just demand attention.
Whenever I feel blue, I start breathing again.

User avatar
IslandPink
No idea why I do this anymore
Posts: 6535
Joined: Tue May 29, 2007 7:01 pm
Location: Denbigh, N.Wales

Re: 3D Print

Post by IslandPink » Sat Mar 09, 2019 10:38 pm

Interesting combo. So is it something like this one for the mids ?
https://www.fane-international.com/view ... 2MBN#tab-5
"The bass is the king of the instruments - it has no known natural predator" (Wobble)

User avatar
rowuk
Old Hand
Posts: 257
Joined: Sun Jun 01, 2014 2:50 pm
Location: Germany

Re: 3D Print

Post by rowuk » Sun Mar 10, 2019 11:40 am

I am using a Faital HF146. The horn is similar to the Fane but not baffle mounted. Everything is acoustically time aligned with low order crossovers.
Attachments
Playback-7-2015.jpg
Whenever I feel blue, I start breathing again.

Post Reply