Latest developments on Directiva speaker project in ASR

[Vineethkumar01]

I think many of the members here might already be knowing about the Directiva v2 project going on in ASR forum.
The whole idea is regarding coming up with a controlled directivity (mostly horizontal directivity) speaker that can be DIYed at reasonable cost
Here is a recent development where they have been able to achieve controlled directivity down to lower midrange frequencies with a prototype:

Introducing Directiva - An ASR open source platform speaker project

As promised, here is an r2 update... First of all, let me say that most of the work was done by @TimVG and @ctrl. Other team members helped with driver selection and my main role was to rebalance requirements as needed. I anticipate they may add some commentary to this post, but both are very...

audiosciencereview.com

This is even before the bass module.
It uses reasonable cost drivers to achieve what they achieve and uses simple concepts like the passive cardioid implementation on the Dutch and Dutch 8C speaker.
I am excited by these kind of developments. It is really heartening to see people collaborating and pushing boundaries in the DIY space.
I am sure that many manufacturers are going to take notice of it sooner or later.

 

[Prodigy]

I think many of the members here might already be knowing about the Directiva v2 project going on in ASR forum.
The whole idea is regarding coming up with a controlled directivity (mostly horizontal directivity) speaker that can be DIYed at reasonable cost
Here is a recent development where they have been able to achieve controlled directivity down to lower midrange frequencies with a prototype:

Introducing Directiva - An ASR open source platform speaker project

As promised, here is an r2 update... First of all, let me say that most of the work was done by @TimVG and @ctrl. Other team members helped with driver selection and my main role was to rebalance requirements as needed. I anticipate they may add some commentary to this post, but both are very...

audiosciencereview.com

This is even before the bass module.
It uses reasonable cost drivers to achieve what they achieve and uses simple concepts like the passive cardioid implementation on the Dutch and Dutch 8C speaker.
I am excited by these kind of developments. It is really heartening to see people collaborating and pushing boundaries in the DIY space.
I am sure that many manufacturers are going to take notice of it sooner or later.

Thanks for pointing out. This indeed an interesting space to watch.

 

[Vineethkumar01]

First video with the cardioid mid-high box in action (with a prototype crossover):

Introducing Directiva - An ASR open source platform speaker project

The depth of the cabinet does not play a decisive role in the Directiva r2, but still contributes to the radiation pattern. If you really plan to build a bookshelf speaker with a significantly greater depth, the radiation pattern will change somewhat. When the time comes you can contact me...

audiosciencereview.com

Exciting developments..

For comparison, here are videos of Tim's own earlier big 2 way cardioid design: