Recent content by Bjorn
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Why Synergy horns?
A cumulative spectrum or waterfall is simply showing how the frequencies decay over time addional to the frequency response. And yes, that's valid for all rooms of for speaker measurements. But looking at the waterfall for midrange and treble in a room is generally not very helpful. The...- Bjorn
- Post #314
- Forum: Speaker Design
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Introducing Vera Audio power amplifiers
The P150/600 RS should be back in stock within a few weeks. I will present the speaker below in a separate thread when the time is right, but just giving a teaser here. Picture here is shown without feet FIY. The name of the speaker is Coherence 12. It's an active speaker design with planar...- Bjorn
- Post #13
- Forum: Power Amplifiers and Preamplifiers Forum
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What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
It means that part of the depth that we perceive can be an illusion of our mind. But it doesn't mean all is that. A speaker with very wide dispersion in the highs will also typically add more depth to the sound. A dipole might also because of its dispersion pattern. So it's all an illusion, it's... -
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What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
I didn't say that. To sum up: There are not detrimental effect with a horn with the right dispersion pattern placed in a corner other than the visual depth loss. But almost no one has heard such horn speakers either. It requires a very large horn with a very uniform directivity. There's a... -
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What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
First of all, it will depend on the directivity of the speaker. If it's sufficiently narrow and broadband uniform there are no audible reflections from nearby boundaries. Typical commerical horns don't meet these requirements though. However, even with a large horn with the right dispersion... -
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What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
If the horn is large enough combined with narrow directivity, it can be placed up against a front wall or in a corner without a detrimental effect. But we're talking much larger horn then. -
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Introducing Vera Audio power amplifiers
That would be the case if they were not built to last. Without mentioning names, many class D amps being sold today have very poor cooling, and we're already seen some of these fail after only a few years. They basically cooked. Vera Audio's philosophy is however, to built products that will...- Bjorn
- Post #11
- Forum: Power Amplifiers and Preamplifiers Forum
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Introducing Vera Audio power amplifiers
It should be back in stock within some weeks. No update.- Bjorn
- Post #10
- Forum: Power Amplifiers and Preamplifiers Forum
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Introducing Vera Audio power amplifiers
Power and cooling in class D amplifiers Let's look at power and cooling requirements in class D amplifiers since there is a widespread attitude that this is not a problem. Chapter Audio was one of those who underestimated this and sold expensive amplifiers that failed after a relatively short...- Bjorn
- Post #9
- Forum: Power Amplifiers and Preamplifiers Forum
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Introducing Vera Audio power amplifiers
There are no reasons to believe parts will not be available for a long unforseen future. In absolutely worst case scenario, we would have to use a newer model of an amplifier module or a PSU. Also want to add that our class D amplifiers are built to last with high building quality and very...- Bjorn
- Post #7
- Forum: Power Amplifiers and Preamplifiers Forum
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Does DSP belong in State of the Art Systems?
Like Don Davis said many years ago: You can EQ the speaker but you can't EQ the room. However, we can make adjustment of the speaker to fit the boundary and listening distance in the room. Room gain of lows will vary depending on both type of wall/surface and proximity of placement. And the...- Bjorn
- Post #572
- Forum: General Audio Forum
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Does DSP belong in State of the Art Systems?
This is typical for most speakers. Correcting this with DSP is not a good choice. Raising the nulls, if possible at all, will increase distortion to serious high levels. This should be resolved with a better speaker design, the use of one or two subwoofers, and doing the treatment which is...- Bjorn
- Post #565
- Forum: General Audio Forum
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Does DSP belong in State of the Art Systems?
This is incorrect. It's aboslutely possible to treat room nodes/bass nulls. But treatment needs to be sufficiently efffective. A lot of sold commercial products out there aren't, and for very low frequencies surface area is very important. I have shown several examples already where rome nodes...- Bjorn
- Post #548
- Forum: General Audio Forum
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Does DSP belong in State of the Art Systems?
It's normally called DBA (double bass array) and multiple subwoofer approach or multiple subwoofers. The latter was first introduced by Welti and later by Ear Geddes and others. Both of them have the weakness of not addressing mid and upper bass and which we are more sensitive to then the sub...- Bjorn
- Post #547
- Forum: General Audio Forum
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Does DSP belong in State of the Art Systems?
At a single spot, at ear height. But the change isn't always as much as the latter one. It can vary. Below is the before and after waterfall at ear height from the same. Before: After - one Modex Plate type 2:- Bjorn
- Post #537
- Forum: General Audio Forum
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