Re: Cambridge Audio - an open letter [long]

On Thu, 27 Oct 2005 08:27:49 +0100, Dave Giles <spam@xxxxxxxx> wrote:

>>> 1) isolate the DAC - don't care how, just don't want all that nasty PC
>>>noise in my analogue
>>
>> What makes you think that this is a problem?
>>
>I'm not an audio engineer (this is probably apparent), but wouldn't placing
>the DAC in the same box as what is essentially a PC cause interference
>problems if there wasn't a reasonable amount of shielding on the DAC?

Given that you can buy 24/96 sound cards for your PC which demonstrate
more than 100dB dynamic range, that wouldn't seem to be much of an
issue for 16/44 CD.

>>> 4) change the CD transport
>>
>> What possible difference would that make?
>>
>No difference to the actual product as regards electrical noise, or whatever
>(though if there is, that wasn't what I was getting at). My only problem
>with the transport is that CA appear to be pushing the 640H as a 640C with
>a hard disk ('...incorporates the high-quality CD player from the Azur
>640C...' - read that as you will), when it seems that the only similarity
>between the two players is (essentially) the DAC. A number of postings on
>the CA forums indicated that some people did think that this was,
>basically, a replacement for the 640C.

But why do you think that the 640C actually does have a different
transport mechanism from the 640H?

Bear in mind that the ten grand Meridian 800 series uses a standard 20
quid CD-ROM drive...........

>>> 5) build wireless in
>>
>> What, you want *more* internal noise?
>>
>Ok - I meant build wireless into the basic spec of the product; I envisaged
>the aerial on the outside. Although would a transmitter in close proximity
>transmitting at 2.4GHz have an effect on an audio signal?

It's a powerful RF source - who knows what intermodulations might
occur? And what's the point, in a domestic installation?
--

Stewart Pinkerton | Music is Art - Audio is Engineering
.

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