Your Experience- Design & Soundstage/Imaging - diyAudio
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Multi-Way Conventional loudspeakers with crossovers

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Old 17th March 2017, 07:49 AM   #1
Xaborus is offline Xaborus  United States
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Question Your Experience- Design & Soundstage/Imaging

Hello all!

I'm looking for everyone's personal experiences and a discussion on speaker design choices and the effects on your soundstage and imaging.

A few examples of design choices are: Narrow vs wide directivity, designs which try to achieve constant directivity vs designs which ignore directivity and just try and achieve a flat on axis, tweeter/driver sizes and types, baffle width, baffle roundovers and shapes vs flat baffle, frequency response/ house curves, enclosure types, etc.

Any input goes! Really what I want to do here is find the most frequent commonalities in a large sample size of anecdotal experiences. Hopefully with enough input we can find out how to design speakers to maximize spatial experience. Cheers everyone!

Last edited by Xaborus; 17th March 2017 at 07:54 AM.
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Old 17th March 2017, 11:19 AM   #2
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My opinion follows, and it lacks any credentials other than a steady approach over decades.

Tone and timbre trump all else for me.
If a loudspeaker plays upright string bass well, it will handle most vocal material.

I prefer to have drivers that either hand off to a compression driver just below 1kHz (few dome tweeters can play so low) or have a midrange driver that extends toward the limit of my hearing.

The Quad ESL63 and my current Bastanis wideband driver manage this.

Large drivers will 'beam' as frequency rises which compromises the speaker's lateral response.

Here's the upshot - the listening position will be narrow, and what of it?

If you're building for a solo listener, and most of us are - maximize performance for tone, dynamics and imaging in your choice seat - and worry less for the rest. See Troels Gravesen for an excellent exploration on these design choices, and the necessary compromises required.

Lastly, have your hearing measured.
Why spend money on the bandwidth you don't use? For me, that cutoff is around 13kHz.

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Old 17th March 2017, 11:33 AM   #3
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Nice topic and a can of worms

Are you interested in having a window into the performance or bringing the performance into the room?

This is an area close to my heart, I'm hoping to build something inspired by the LX-MINI, which by most counts has stellar imaging.
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Old 17th March 2017, 11:39 AM   #4
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Quote:
Originally Posted by ewollowe View Post

This is an area close to my heart, I'm hoping to build something inspired by the LX-MINI, which by most counts has stellar imaging.
An excellent choice, and a clever design.
I applaud engineering that has 'designed complexity out'.

Simple is good.



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Old 17th March 2017, 01:41 PM   #5
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Originally Posted by anji12305 View Post
An excellent choice, and a clever design.
I applaud engineering that has 'designed complexity out'.

Simple is good.



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Clever is the word I'd use. Seems to me he's stepped back so he could see the wood from the trees. If I could afford his plans and a kit I'd pull the trigger now. His site is a treasure.

Then there's the work of Gedlee, Danley horns and even the intrigueing world of omnis and offshoot like Audio Kinesis.

More than one way to skin a cat and all that.
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Old 17th March 2017, 01:48 PM   #6
Xaborus is offline Xaborus  United States
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Anji I'm curious if you have tried multiple CD's and if so what is your current favorite. I was planning on a Seas A26 kit but as of last night decided to do a Fusion-12 Tempest kit instead. I just can't deny the advantages of constant directivity- or atleast I'm just super curious on the constant directivity "sound".

Honestly I'd prefer to pay a bit more for the B&C driver over the supplied Denovo DNA-360, but DiySoundGroup states "no substitutions or subtractions". No idea how well subbing out a DE250 would work with the crossover either. Oh well, the Fusion-12 kit will be good enough to see if I like the sound or not to find out if I should learn crossover design and do something similar with the DE250.
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Old 17th March 2017, 02:35 PM   #7
DonVK is offline DonVK  Canada
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Default Omni

I'll add my 2cents for omni.

If they are true omni, the directivity is constant and its 360deg, they sound the same from every angle. The soundstage is large, as they create better lateral reflections off your room walls. Imaging is good, only now its a line (path) between the speakers, not a point (sweet spot) like conventional speakers. The sound is spacious due to those reflections, and if your room is large enough the sound will envelope you. They fill the room and I never get fatigue.

However, there are no kits (maybe LX mini) and you will have to build and tinker with everything. You will loose sound "precision" if you are a highly technical listener.

OmniDirectional - work in progress
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Old 17th March 2017, 02:50 PM   #8
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DonVK have you looked at Audio Kinesis? Late ceiling splash is interesing.

AudioKinesis Home Audio Speakers
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Old 17th March 2017, 03:05 PM   #9
DonVK is offline DonVK  Canada
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Originally Posted by ewollowe View Post
DonVK have you looked at Audio Kinesis? Late ceiling splash is interesing.

AudioKinesis Home Audio Speakers
Those are interesting. They use a lot of drivers, but they are after the same effect as I want. I wonder if the "ceiling box" can be tilted to account for flat ceilings, otherwise a lot of sound will bounce straight down instead of out.

I bounce a tweeter off an angled cathedral ceiling that spreads sound to the room.
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Old 17th March 2017, 03:13 PM   #10
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The effect has been discussed on some other threads. I believe it can be achieved with far fewer drive units if you're not too concerned with huges dynamics etc.
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