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Old 9th August 2010, 09:09 AM   #71
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Yes, I switched because the Mundorf is smaller, and better behaved off-axis.

The lower sensitivity is no problem, the Mundorf surely can deliver the goods without a sweat!
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Old 15th October 2010, 07:56 PM   #72
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Hi,

I was offered the opportunity to listen to the dipoles built by keyser...
Amazing. Stunning. One of the best speakers I ever heard. They completely disappeared into the music. Just as loudspeakers should. Really amazing, seriously considering to build something like this myself although I am not good at diy in general.
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Old 13th January 2012, 12:39 AM   #73
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How about doing a vertical polar response on the Neo 3. Observe where the "edges" of the 6db down point are and move the tweeter up by that much, followed by an aggregate vertical polar of the mid-high combination. Some sort of damping on the upper frame of the mid might help. After all, wave lengths at 2k are getting fairly short...

Cheers!
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Old 17th June 2013, 05:39 PM   #74
Juhazi is offline Juhazi  Finland
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keyser
it was nice to jump to this your old project - it has been one of my inspirations for AINOs and how to approach directivity measurements.

What are you listening now in June 2013? What's cooking? Is the signature project done?
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Old 8th November 2015, 03:36 PM   #75
keyser is offline keyser  Netherlands
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Quote:
Originally Posted by Juhazi View Post
keyser
it was nice to jump to this your old project - it has been one of my inspirations for AINOs and how to approach directivity measurements.

What are you listening now in June 2013? What's cooking? Is the signature project done?
Hi Juhazi,

Sorry I missed your post two years ago!

Since 2010 I've tried quite a few very different kinds of speakers, from CBT's to a cardioid with waveguide and from a more or less omni-directional speaker to floor-to-ceiling line-arrays. All have their strengths and weeknesses. CBT's and line-arrays have a certain 'softness' about their sound (which I both like and dislike sometimes); they're very easy to listen to and sound good almost anywhere in the room. The omni's sound great. Very natural and neutral, but you shouldn't listen to the from too far away, because you'll hear too much of the room. I think uni-directional speakers (cardioid with waveguide) are most 'accurate' and un-colored because they don't illuminate the room as much. They'll let you hear exactly what's on the recording. They sound very direct and they sort of constantly demand your attention - kind of the opposite of what I experience with CBT's and line-arrays. For the last year and a half floor-to-ceiling line-arrays have been my primary speakers.

The last couple of months I'm thinking about building a pair of dipoles again. Dipoles add a certain spaciousness and naturalness to the sound. Their directivity-index is similar to that of a cardioid/waveguide speaker and in my opinion they have some of that same clarity - albeit to a lesser extent - but the strong front-wall reflection really gives them a particular sound of their own. In my view they are definitely less accurate because of it, but it is a very pleasant 'effect'.

Like I said, I'm thinking about building a pair of dipoles again. I have some ideas to get better dispersion than I achieved with the Unbaffle Dipole, using a 3" upper midrange driver and a pair of back-to-back dome tweeters.

I really like your AINO gradients by the way!
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Old 8th November 2015, 06:53 PM   #76
Juhazi is offline Juhazi  Finland
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Thank you keyser for the post and I agree with all your considertations of lines, wgs and dipoles! I haven't had a chance to hear line arrays/cbts in home environment, but still! I agree that dipole bacside radiation should not be damped to get the magic dipole life-like sound (see picture)

I too did end up to using BG Neo mid and tweeter, after trying to go with cones and waveguide-ribbon. All my friends agree that Neo3 dipole really makes magic! Ít is sad that they are out of production now.

Now keyser, please start a new dipole project and try to find substitute for BG Neos! Linkwitz and Kreskowsky seem to be ok with cones&domes, but we know that it is possible to go beyond those!

Digital sound processing is widely accepted in hifi nowdays, and we see new applications for sound radiation manipulation like Kii and B&O 90. New challenges for diy projects...
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Last edited by Juhazi; 8th November 2015 at 06:57 PM.
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Old 7th May 2016, 12:44 PM   #77
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Hi Keyser,

Any progress on your new dipole idea?
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