Re: Behringer DCX2496 Quality

On 28 Sep, 17:18, nos...@xxxxxxxxxx (Don Pearce) wrote:
On Fri, 28 Sep 2007 09:15:54 -0700, Dirk Bruere at NeoPax



<dirk.bru...@xxxxxxxxx> wrote:
On 28 Sep, 17:11, nos...@xxxxxxxxxx (Don Pearce) wrote:
On Fri, 28 Sep 2007 09:06:49 -0700, Dirk Bruere at NeoPax

<dirk.bru...@xxxxxxxxx> wrote:
I've been looking inside one of these at what components are used.
They seem overall to be pretty good eg AKM converters and 4580 opamps.
What I can't reconcile is why the DCX is so (comparatively) noisy
given the specs of the chips. There are a couple of possibilites that
I can see:
a) It uses a switching PSU for some reason instead of a linear
b) The signals after the DACs but before the opamp o/p are carried on
an unshielded ribbon cable

Any other ideas?
Am I being unreasonable?

Dirk

What's the nature of the noise? Can you post a sample?d

d

--
Pearce Consultinghttp://www.pearce.uk.com

Just that when it's connected up to a 1kW amp and speaker system there
is quite an audible hiss with no signal (or small signal) applied.
High quiescent noise. With something like it's (far more expensive)
XTA equivalent this noise does not exist. It's maybe 12dB better at
least. Yet the XTA appears to use no better components IIRC.

Dirk

How convinced are you that you are comparing like with like? I mean,
was the gain structure identical between the two setups?

d

--
Pearce Consultinghttp://www.pearce.uk.com

Yes.
Of course, there's a 10x factor in the cost but I would like to know
*why* there is such a noise difference.
I would also like to know why Behringer uses a switching PSU in its
unit when it would appear to be unnecessary.

Dirk

.

Relevant Pages

  • Re: Behringer DCX2496 Quality
    ... They seem overall to be pretty good eg AKM converters and 4580 opamps. ... The signals after the DACs but before the opamp o/p are carried on ... High quiescent noise. ... XTA equivalent this noise does not exist. ...
    (rec.audio.tech)
  • Re: Behringer DCX2496 Quality
    ... They seem overall to be pretty good eg AKM converters and 4580 opamps. ... The signals after the DACs but before the opamp o/p are carried on ... High quiescent noise. ... XTA equivalent this noise does not exist. ...
    (rec.audio.tech)
  • Re: Behringer DCX2496 Quality
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