Hypex Ncore

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I don't have a pre. DAC's are connected directly to the Ncore's. That's why I needed to reduce the gain.

Erik, I just ordered 2 days ago a second dac to try a "no pre" system :D
(=> 2 way active crossover)
I plan to use a DSP with volume control, maybe a nanoDIGI.
In your case, how do you control volume ?

Concerning the sound quality with or without R141, I did not notice any change with a passive attenuator (TVC). (2 day ABX test, the time to fix my Ncore... :wchair:)
 
I got two sets of ncore, one with and one without r141. I haven't noticed any different in sound between them (other than the latter was quieter). The problem must have been somewhere else than absence of r141 if there was a huge difference in sq.

I could take "i could hear a small difference", but "it was barely HiFi"...come on :).
 
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In your case, how do you control volume ?

In this:

squeezebox_mr.jpg



(digital volume control, before the DAC's)
 
The dilemma of low distortion equipment, or systems, is that you can then listen "deeper" into the sound without effort: mediocre sound smears everything with a relatively uniform patina, which may be pleasant, or unpleasant, and one tends to listen to the outside surface of the musical happenings. So, if you can listen further into the mix then your ear adjusts, and realises that something that didn't register before is very clear, and in fact is "wrong", could be improved. Hence the journey continues ...

Frank
 
Well, in that case something was definitely wrong with your set-up. Probably forcing your pre-amp into clipping.



"You hear what you believe". Have you ever heard of perceptual bias?

Once again: Pen & Teller: Water Waiter (the relevant part starts at 5:00)



Naah, you will just be accused of subjectivism and lack of scientific rigour... :)

yeah not that I disagree in general, but I do kinda object to this video being presented as a test that they actually did think they all tasted different. to me, particularly the restaurant section, its clear to me that they are making **** up to cover the fact that they couldnt taste any difference, but they didnt want to come across as unsophisticated, so they spouted nonsense. of course this is a factor in audio too, but it kinda dominates the result of the test IMO.
 
Is this ment to be a joke or sarcasm? Forgot your smilies? Do You even know what is in his rig? These kind of comments I would expect from a beginner trying to defend his own choices while buying one's first rig, blind. As I have read Your posts in the past, this shouldn't be the case though.
I've been known to forget smilies now and then.

it was a joke aimed at the fact that the objectivist vs subjectivist debate is circular almost by definition. each camp can always bring an argument that "resets" the discussion.
 
Is this ment to be a joke or sarcasm?
Why not the two ?
I do not understand this debate with the gain modification of the Ncore.
What is the noise figure output of it in the both figures ? Do unmodified Ncore noisy enough to be heard on high efficiency speakers ? If not, there is no interest to change its gain, and a resistive attenuator right at the input will do the job perfect, and can provide a better isolation of RFI/EMI in the input line.
With the huge open loop gain of the Ncore, i doubt any change in its feedback loop can bring any practical change in the damping factor: il will be limited mainly by the loudspeakers wires.
 
Do unmodified Ncore noisy enough to be heard on high efficiency speakers ?

That is what some users have reported.

a resistive attenuator right at the input will do the job perfect

Perfect? It will spoil teh impedance matching between source and amp, and probably introduce some noise.

and can provide a better isolation of RFI/EMI in the input line.

How do resistors isolate RFI/EMI?

With the huge open loop gain of the Ncore, i doubt any change in its feedback loop can bring any practical change in the damping factor: il will be limited mainly by the loudspeakers wires.

Probably not a big change in damping factor, but a small improvement in distortion and signal-to-noise...
 
@mr_push_pull: understood. As a moderator in our local hifi forum I have become very allergic to those kind of comments. Which fortunately was not the case here and I (sort of) overreacted.

Why not the two ?

If it were, it is BCP to mark it as one by adding smiley or to. Otherwise it can and will be interpreted as open assault and/or "reset" comment as mr_push_pull said.

For the rest of You guys, sorry for the offtopic.
 
That is what some users have reported.
Ok. Then, for them, and them only, it will bring an improvement. While, i wonder how an amp with 124dB of signal-noise ratio can be heard on a 100dB/w speaker: If will bring ~127db spl full power, so the noise will be 3db !!!! (remember a silent room noise is 30dBspl.
Perfect? It will spoil teh impedance matching between source and amp, and probably introduce some noise.
How do resistors isolate RFI/EMI?
I doubt that, at this line level, the contribution of noise by a metal film low impedance attenuator brige is something to speak about.
Resistances does not islolate RFI, but we are talking of an 'attenuator', right ? And in the other sens, it brings an added isolation for the feedback loop of the previous preamp, if any.
 
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