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TOPIC: Building the dream Omni-Directional LoudSpeaker

Building the dream Omni-Directional LoudSpeaker 8 months 3 weeks ago #31210

  • Sparrowlegsspeakers
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It's been a little longer than planned regarding sharing my measurements. Though I've done some, they aren't very good for a number of reasons - Room size, familiarisation of REW are just to name a few exuses! ;)

Due to being back in work mode, it will take me a few weeks to get something conclusive. In the meanwhile I'll continue scour the forums and resources to help get a better understanding as to the processes I should be adopting.
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Building the dream Omni-Directional LoudSpeaker 8 months 3 weeks ago #31217

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I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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Building the dream Omni-Directional LoudSpeaker 8 months 2 days ago #31465

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Been a while...

Few things -

Built a new type of omni, it took 3 attempt to build and get working, then I dropped it. Rebuilt it, managed to record it working and then dropped it again! the gods didn't want this one to exist!!!

This omni had a VC per petal, positioned on the equator - think of a rotary alignment. A video of it working can be found on my Sparrowlegs FB page - www.facebook.com/SparrowLegsSpeakerDesig...os/1217903321641959/

Other news - after playing with REW, and initial measurements, (Still more to learn, but not enough time!!!) I have come to the realisation that if the spheres are open, the frequence response is in proportion to the diameter of the globe itself. For example - Sealed globe with a 18cm diameter will respond from 200hz to 2khz with no problems. If open, then it will respond well FROM 2khz upwards... (I have actually got one to produce a +/-6dB from 1.8khz to 18khz.)

On a separate note. If I got a second miniDSP 2x4HD, how do you split the channel using a USB connection - IE left and right. I get it with composite, but would I have to make a bespoke usb cable?

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Last Edit: 8 months 2 days ago by Sparrowlegsspeakers.
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Building the dream Omni-Directional LoudSpeaker 7 months 4 weeks ago #31518

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Great update. Looking for measurement of these new setup!
For USB audio, you don't need a new cable.. :-)

Just 2 x USB cable. One going to unit 1, another going to unit2. We've got a step by step here:
www.minidsp.com/forum/hardware-support/1...-2x4hd-under-windows

Did you have a trial?

DevTeam
MiniDSP, building a DIY DSP community one board at a time.
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Building the dream Omni-Directional LoudSpeaker 7 months 1 week ago #31711

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Devteam, cheers for the link - www.jackaudio.org/downloads however get "file not found for windows, do you know of another link is nothing came up when googling.

Its been a while... so this is what I have come up with (sorry for the watermarks, but this is the first time I have release this image) -



I'm still playing with the omni designs, finally I am getting to grips with the way they work - attached is an old SPL of when I started to piece them together...

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Building the dream Omni-Directional LoudSpeaker 1 month 2 weeks ago #33794

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Its been a while since my last post. Continuing with my Omni's build's, have quickly come to the realisation that the miniDSP enable a matching of pretty much anything due to it's versatility.

Here is an example of matching a Lowther Fidelio cabinet with a Philips 9710 driver to my SparrowLegs Speaker design wave-bending Omni-directional upper mid -


Further links Links - www.facebook.com/SparrowLegsSpeakerDesig...005383098418/?type=3

Now this concept has opened the doors to exploring this concept further! As such, please can someone from the DEVTEAM PM/email me.

Links to how I build my basic Omni's can be found on this link - Sparrowlegs Speaker Design building an MBL style wave bending Omni-Directional Speaker Driver

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Last Edit: 1 month 2 weeks ago by Sparrowlegsspeakers. Reason: Changes
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Building the dream Omni-Directional LoudSpeaker 1 month 2 weeks ago #33834

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These are still awesome :)
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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