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106  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush on: July 01, 2017, 01:44:41 pm
But it really is a tall ask expecting their 5W or so per channel to drive full range speakers (albeit high-efficiency horns) with passive crossovers and no powered LF drivers. I suspect this is simply too much for them.

Hi Mani,

For some reason I thought you had 211's in your amps which would equate to 15w to 20w single ended...not sure where I got that idea from, but they are certainly not 5w tubes.  Judging by the descriptions of what was going on I think that what you were hearing might have been the effect of back emf from the voice coils of the woofer/s finding its way to the tweeter.  As you have already mentioned a good solution may be to offload the lower channels to another amplifier and use your valve amps for the mids and highs (the channels with little moving mass).

I'm glad you have managed to improve things further.

Cheers,

Anthony
107  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush - Intona - Clarixa on: June 30, 2017, 09:18:32 am
Are you done with the W10 'versions' Peter, or are you planning to try one of the more current versions with RAM-OS and XXHE?

Anthony, no, not done at all. Although I don't give it much chance, for a month or so I have the Creators Update on my network somewhere. But I have been working on the Lush since, and somehow I am short of time. swoon
Anyway, this is not tested "in a minute" because I can only make it a RAM version to compare apples with apples.

If it works out (I assume it will - against all odds Happy) it will be an upgrade to the RAM OS Disk.

Peter

Yeah, I figured you were busy there! (understatement).
108  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush - Intona - Clarixa on: June 30, 2017, 08:33:17 am
Best is #1.  Clearly.  Gives that growl in the female vocals that all men love.

Anthony, man, what a great share this is.
And yes, good description of what the Intona does to the sound. But let's keep in mind, only for 14393.0 that works out so (to be "over"). 10586.0 is fine with it.

Personally I would always stick to such devices and cables. This is for the reason of things being able to drastically change for all the reasons you may run into in the future (which we can not predict).

Regards and super thanks,
Peter

That's right, the older W10 is less picky about the Intona, I had forgotten.  Are you done with the W10 'versions' Peter, or are you planning to try one of the more current versions with RAM-OS and XXHE?

I have another reason to want to ditch the Intona that I will share at some stage in the near future when I get enough time to finalise that particular project.  Suffice to say that it will not fit anywhere in my rack at the moment and there are guys that are actively looking to buy them, so it is a good time to sell the Intona.  
109  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush - Intona - Clarixa on: June 30, 2017, 06:30:22 am
Today I have played around with various arrangements of USB devices.

In all cases I used the Lush 1.5m USB from my Stealth PC.  These were the iterations I tried:

  • 1. Lush >> Phisolator >> Short generic USB with 5V blocked >> G3
  • 2. Lush >> G3
  • 3. Lush >> Intona >> Short Clarixa >> G3
  • 4. Lush >> Intona >> Short Clarixa >> Phisolator >> Short generic USB with 5V blocked >> G3
  • 5. Lush >> Intona >> G3

I had absolutely no issues changing the Intona in and out of the system even in series with the Phisolator.

Best is #1.  Clearly.  Gives that growl in the female vocals that all men love.

Adding the Intona seemed to take the entire presentation up in pitch sometimes adding a slight shrillness whether or not the Phisolator was in series with it or not. 

So, I am selling my Intona, and probably my Clarixa's as well, and staying with the current de facto Phasure setup:  Lush >> Phisolator >> Short USB with 5V blocked >> G3.

Happy days!
110  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush on: June 28, 2017, 06:25:32 am
Perhaps it is because I am still in the honeymoon period (my The Lush arrived this morning) but this cable is "the business".  Harmonics anyone?  The albums that I have listened to so far have been very enjoyable. 

Yes the sound is more lush, or perhaps even warmer, than the Clarixia.  It kind of reminds me of why people choose triodes and 4 or 5 way acoustic systems...that depth of presentation with a harmonic richness to soothe the soul.

Mani, would I use this cable in a triode/horn acoustic system?  Well it depends a little I guess.  If your sound is "rounded" rather than "clean" and already has lots and lots of H2 then perhaps this cable will bring too much, I am not sure.  Think a 300B pushed hard with a half decent OPT that struggles with both HF and LF (but has a midrange to die for)...I don't think The Lush will work there.  A well designed SET with a very capable output transformer matched to the loudspeakers and operated well within its limits, or optimally a multi-amp SET system, and this USB cable and the G3 will work very well.

I've not played with the Intona/Phisolator combo in and out of my system since the G3 upgrade, but I have no reason to want to do so with the solid state amplification that I am using at the moment.  That you have, and prefer the 'less rounded' sound of the Intona may be an indication that The Lush is not for you.  Or not, because I do not really know what you are hearing.

Peter, well done!  I'll leave The Lush in for a week or so and then try the Clarixia again.

Mani, I hope this helps a little with your decision.
111  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush on: June 27, 2017, 06:49:38 am
I'm growing a real hatred for all things USB. It's like we're all being held hostage by its whims. And unfortunately, it has us by the balls...

And our knight in shining armour, instead of defeating it and putting it in its place, is courting it! Appeasing it. Complementing it. But its fickle nature remains lurking beneath the surface.

The main reason that I purchased a NOS1 way back when was that it was supposed to be immune to USB cables and I had just spent a boat load on a fancy USB cable after trialing many and thought there were better ways to spend my time (and money).  The NOS1 was more or less immune...inconsequential differences between USB cables and I was perfectly happy with the $2 cable that Peter had supplied with the dac.

Upgrades to NOS1a and now the G3 and no USB cable immunity has been set aside but the sound now is definitely better these days.  It is a little troubling that the dac that was once immune is no longer and that I have purchased both the Clairixa and The Lush expensive USB cables from Peter, but it is what it is. 

Curious Cables are made just down the hill from me so I will see if I can get one sent up for a demo...in for a penny in for a pound!
112  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush on: June 25, 2017, 03:36:35 am

Any advice on what I should do?

Mani.

Maybe you could offer to do the hard yards and burn-in Pauls cable for him.
113  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush on: June 22, 2017, 05:26:06 am
Yes please.  Will let you know the length.

150cm please Peter.
114  Ultimate Audio Playback / Cables (Community induced) / Re: The Lush on: June 21, 2017, 12:43:51 pm
Yes please.  Will let you know the length.
115  Ultimate Audio Playback / Chatter and forum related stuff / Re: XX volume control - something weird going on on: June 19, 2017, 12:38:21 pm

Peak Extend OFF:
0dB - thick, full sound
-1.5dB (onwards) - much more sparkle and life, but maybe too thin for some material

Peak Extend ON:
0dB - thick, full sound
-1.5dB (onwards) - thick, full sound (exactly the same as 0dB, but slightly quieter, obviously)

My observation remains though that both XX and HQP sound very different at 0dB vs. any level of attenuation... and that this has nothing to do with clipping or the 'sweet spot' of the the DAC. And also that in XX, PE has a similar character to 0dB.


You are in a unique position to test this Mani given that it sounds like you are wringing every volt from the B'ass by using no attenuation.  Only Peter could tell you how PE changes, or does not change things and if it behaves differently to the normal digital volume control.

I can also see now why you think the more congested sound may be the correct one given that you observe that it has the same sound characteristics as -0dbB.  But that begs the question "does -0dB have the correct sound."
116  Ultimate Audio Playback / Chatter and forum related stuff / Re: XX volume control - something weird going on on: June 19, 2017, 10:01:19 am
Yep, PE+3dB sounds different to no PE.  I prefer no PE.

How would you describe the difference?

Mani.

Well, with PE is more "congested", but that sounds bad which is not necessarily so because it still sounds very nice.  There is more substance, a smoother, thicker sound but what is lost is some dynamics, transients and detail which is replaced by a certain monotony, or lack of diversity of sound. 

I've not spent a great deal of time comparing the two but I have found the difference easiest to hear when listening to electric guitars...think Pink Floyds "Coming Back to Life" from Division Bell with the variation in guitar techniques...I find the difference relatively easy to spot at the start of that track.

Non-PE by contrast is livelier thanks to the dynamics and transients and seems to have more time or space between the notes.  It sounds full to me but not with that hint of bloat and monotony.

Who knows which , if any, is correct?  I just know that in my system as it is at the moment that I prefer the normal VC without PE activated.
117  Ultimate Audio Playback / Chatter and forum related stuff / Re: XX volume control - something weird going on on: June 19, 2017, 05:43:24 am
Yep, PE+3dB sounds different to no PE.  I prefer no PE.
118  Ultimate Audio Playback / Chatter and forum related stuff / Re: XX volume control - something weird going on on: June 15, 2017, 09:13:34 am
If so, then I assume that each system has different tube amps which leaves the G3 as the common denominator.
[...]
That both of your systems display the same trait still leads me to think there is something about the B'ass driving those amps, but even that is unlikely in my view.

Anthony, by now I think you saw it yourself (reading Mani's post later than you wrote yours) but this was already happening prior to the G3/B'ASS upgrade.

I also dare say that Mani has "visions" (don't want to call it issues) on this from what ? ... 6 years back ? or was it 8 years because even prior to the NOS1 ? I think so ...

Peter

Yes, I have read that now.  I am not sure how Mani tested it with the Orelos though...it must have been far to loud to listen with no attenuation.
119  Ultimate Audio Playback / Chatter and forum related stuff / Re: Tidal + MQA on: June 15, 2017, 09:11:14 am
Sounds promising then?  I'm looking forward to what comes of it Peter.  There are some guys in my part of the world that love what they are hearing from their MQA dacs and players, but I take all that with a grain of salt...after all they are already starting from behind us regarding SQ.
120  Ultimate Audio Playback / Chatter and forum related stuff / Re: XX volume control - something weird going on on: June 15, 2017, 08:00:08 am

It can just as well be caused by that amp etc. Same thing about the voltage rails, BUT you'd need to play at maximum "power". Read : your amp could be clipping.
Not sure !


If I remember correctly, Mani was hoping for more output from the B'ass I/V so that he could drive his amplifiers louder.  This would indicate that the amp is not clipping with anything the G3 can throw at it (nominal 1.5vrms I think?).  Of course that is no guarantee that the amp in not clipping, but is an indication that it probably needs more than 1.5vrms to achieve full power, and therefore induce clipping, so 0dB attenuation in XXHE should be no different to -1.5dB.

Hi Anthony,

Hmm ... that makes me think twice. But I think that only for some sense of "logic" you may be right. This does not mean that technically you need to be right per se. So I think the other way around :
With exactly the same thought (there's lack of power in general), you thus feed the amps with full voltage (whatever that is for the moment) and thus for that situation it requires the most power. So of course you can think that a DAC with e.g. 2x the output voltage should be able to work too for any situation (because "an amp is an amp" ?) but it doesn't really work like that. So I think the other way around : we have some amps that suffice for 109dB sensitive speakers (at say 3 Ohms) and that thus siffices the same for 115dB sensitive speakers (at 3 Ohms) ? I don't think so. And thus : if the amp suffices "just" for the 115dB speakers it lacks a factor of two for power on the 109dB speakers.

So all what's required to let the amps clip is :
a. have underpowered amps;
b. feed them with a voltage which is just more than they can handle.

Ad b.
Make that a little less (digital attanuation or by other attenuation means) and they are fine.

Right.
And now I say that all is moot because I said that I have dreamt that I saw a text from Mani telling about "since this tube amp and speakers" but I don't think I dreamt and Mani rather pulled that text (because ... and I didn't look it up - Mani had the problem prior to that already).

I already said "not sure !" and it is far more easy to think that the NOS1a clips. But then "unnoticed" for me and it should be related to a frequency because I coincidentally checked it for exactly this phenomenon (clipping) and it does not (but with 3dB more IIRC it does). It does not at 1KHz.

While this would be some technical explanation from my side, I only present you this information because it is an understandable explanation (I hope). But what I really think and should say is that each NOS1 has its sweet spot for attenuation which is related to the PCM1704 chips which has the sweetspot and which is not equal at al for each chip. But as you can understand in itself, this is not any explanation to bring forward because nobody can deal with it (I wouldn't be able to either). From there, another explanation is more feasible and this is that the MSB (Most Significant Bit) from the chips (or one of them etc.) implies a "not the best" sound. So remember, when we attenuate digitally even the slightest, that bit is turned off and never comes up throughout and piece of music (no matter how loud). Or an even better explanation for those understanding the PCM1704 : that one half of the chip (forming the 24th bit (MSB)) is shut off and which is special (regarding to all of the other bits).

... And of course it is already known that about each person trying to digitally attenuate with a preamp (or analoge volume of other means) present, always comes up with this 6dB. I never tried it, but this may not be a coincidence.
So in the end it is nothing new ?


blablabla ... Happy
Peter

Thanks for this post Peter, it is most informative, especially the bit I have made bold.  In the past I have noticed that no attenuation does not sound as good as just a little bit, but I always put it down to the untreated room I was in and thought that the "problem" was a result of  non-optimal acoustics as more sound power was added to the room.

I have not bothered to find the attenuation sweet spot with the preamps I have here but maybe I should one day.  Have been waiting to properly treat the room first before I bothered with such relatively minor tweaking, but I also have other more pressing audio projects on the go...
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