linuxaudio.org

On 03/29/2012 10:28 PM, Fons Adriaensen wrote:

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> On Thu, Mar 29, 2012 at 09:09:26PM +0200, Giso Grimm wrote:

>

>> Here you might listen, the same piece, same musicians, same place, same

>> mics (Neumann KM184 pair), same positions, same lute (although it was at

>> the luthier for repair in between), one was four month later, the words

>> were changed a bit. Please guess which was ADA8000 and which was Micstasy:

>>

>> http://vegri.net/come_shadow.wav

>> http://vegri.net/come_shape.wav

>>

>> (7 MB each)

>>

>>>> No idea if there's more to break, though. ;)

>>

>> yes there is, I just discovered while preparing those files :-(  If you

>> drive all outputs near maximum amplitude simultaneously (-1.5 dB FS),

>> the power supply seems to break down, and you hear buzzes (following the

>> peaks of your music). If I take down a few channels everything is fine.

>

> I wonder, what is the link between preparing those files (which

> should not involve anything except editing and maybe getting the

> levels equal, i.e. no hardware involved at all), and that discovery ?

no link at all, it just happened to be noticed then (only that I boosted

the levels to reach near fullscale), and I used to have other default

hdspmixer settings.
> Anyway, this is still an 'easy' test, it doesn't stretch the

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> hardware to any limits at all.

Sure, that is the reason why I cut the silence away - there you can hear

clear differences.
>

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> The difference between the Behringer and the Micstasy is not

> about 'audio quality' in the sense of frequency response,

> distortion, etc. It would take really bad engineering to get

> those so bad that it would matter.

>

> It is all about technical qualities that *do* matter if things

> get a bit more difficult: hum levels, noise levels, the ability

> to change the mic gain while recording without any risk and by

> a defined amount, resistance to RF and mains interference, being

> able to supply stable phantom power on all inputs, etc. etc.

I totally agree, my B.s drove me almost crazy several times. For

concerts (where I need 3 of them) I always have a spare one reachable.
> Try recording a contemporary music concert on location, with

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> percussion ranging from barely audible scratches to a bing bang,

> and voices switching between whispering and screaming in a matter

> of seconds. This sort of thing even takes a Micstasy or an Aphex

> 1778A to its limits. Your B. will fail miserably.

I did that as well a few weeks ago, and by B. failed :-)
Right now I don't have additional 4kEUR just for reliability, that's why

I still use my B.s (except when I can borrow a Micstasy), but I cannot

wait the day when I say good bye to them...
Giso

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