Recent content by iansr

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    Does DSP belong in State of the Art Systems?

    @PGA; I think you’re on the wrong forum . Don’t you know that analogue is good and digital is bad, because, because, well it just is . . . I speak as someone who intends engaging Mitch’s services.
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    Atma-Sphere Class D Mono blocks

    OK I‘m aware if the effect of a balanced topology on harmonic distortion and I should have said many class A amplifiers rather than implying ALL of them, but otherwise I think you are agreeing with the theory, assuming that by benign distortion you do indeed mean 2nd harmonic ? So I think you...
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    Atma-Sphere Class D Mono blocks

    “My first impressions is simply how much they sound like the OTLs.” One common theory as to why class A amps sound different to other amps is that their harmonic distortion profile is different, specifically that 2nd order HD is dominant and the higher orders decrease in magnitude as you go up...
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    Does DSP belong in State of the Art Systems?

    We need to be careful that we don’t conflate any inherent sonic traits of DSP (that may or may not be discernible) with the way it is being used; eg you can’t blame DSP for the proliferation of dynamic compression. Mitch Barnett is a massive advocate of the DSP software I mentioned but he warns...
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    Does DSP belong in State of the Art Systems?

    Yup. All DSP gets tarred by the same brush ( are people outside the UK familiar with that expression?) and most people’s experience of DSP comes from using or hearing MiniDSP. Their gear is cheap and has great functionality, but they have to make money and so something has to give. I’ve tried...
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    Atma-Sphere Class D Mono blocks

    I’ve come to understand that there are 2 categories of amp that have the potential to float my boat. One of the key ingredients of the first type is that it has extremely low levels of distortion. I have some of Tom Christiansen’s Neurochrome amps. They are the most neutral and transparent...
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    Does DSP belong in State of the Art Systems?

    “If all speakers had their frequency response flattened to a straight line, wouldn't that make them all sound alike?” I think you need to do a bit of reading. And referencing a magazine review as evidence - seriously ?
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    Does DSP belong in State of the Art Systems?

    To make this less controversial lets put to one side analogue sources. So lets say your digital source is something like JRiver running on a dedicated PC and you are using JRiver’s own convolution engine to apply your combined crossover, time domain and room correction filters derived from...
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    Does DSP belong in State of the Art Systems?

    AND, if you also use it as an active crossover at the same time then you can get seamless crossovers with perfect time / phase correction, which are impossible to achieve with passive crossovers.
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    horn speakers readily available in the UK? or other British speakers to check out...

    Is your day job writing spin for Boris because you obviously have a talent for it. Objectively active and passive crossovers each have their advantages and disadvantages so just like the design of every other element of a hi fi system its a question of deciding which set of compromises you, or...
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    horn speakers readily available in the UK? or other British speakers to check out...

    One channel of amplification directly driving a single transducer is in principle inherently superior to one amp driving several transducers via a passive crossover. DSP can achieve crossover and phase / time domain results (and room correction to boot) that are impossible for a passive...
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    Visit to Audiophile Bill to hear his horns project

    Stunning work Bill
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    horn speakers readily available in the UK? or other British speakers to check out...

    How to destroy any credibility you might possess in one short post. If you are going to make extremist assertions I think you have a responsibility to declare it as such.
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    M1.1 vs M1.2

    Thanks. Anybody got any other insights?
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    M1.1 vs M1.2

    I am interested in understanding what the differences are between these 2 amps other than the slight increase in power. Model upgrades are not always what they seem to be; I was recently considering buying an Accuphase class A amp that has been upgraded a number of times over the years. A...
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