XXHighEnd - The Ultra HighEnd Audio Player
October 22, 2014, 11:35:36 am *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Dec. 31, 2012 : XXHighEnd + Phasure NOS1 DAC receive 6moons Blue Moon Award !
** "Lonely at the very top" **
Search current board structure only !!  
   Home   Help Search Login Register  
Pages: 1 2 3 4 5 6 [7] 8 9 10
 61 
 on: October 14, 2014, 07:26:35 pm 
Started by christoffe - Last post by Matt

Now you can answer everybody's questions. yes

Best regards,
Peter

Haha, Peter,

do not overestimate my capabilities. But after publishing the specs it was an easy task.
And the Neutriks are the NBLC75BVZ17.

BTW, I like your approach: You discover sonic advantages with the BNCs and change immediately your NOS1a for the better.

ATB

Matt

 62 
 on: October 14, 2014, 07:00:12 pm 
Started by christoffe - Last post by PeterSt
Haha, no need to apologize at any time. And of course I just was teasing (not only today). So secret.
But smart or good of you to do this with so few data.

Now you can answer everybody's questions. yes

Oh, the answer was Yes. And no you know which of those too. Haha.

Best regards,
Peter

 63 
 on: October 14, 2014, 06:38:42 pm 
Started by christoffe - Last post by Matt
do you use Neutrik BNCs with your Van Damme cable?

Hey Matt,

Am I using a Van Damme cable ?

Peter

Peter,

if you deny that it is a VD 278-475-000 I will apologize.

KR

Matt

 64 
 on: October 14, 2014, 06:23:22 pm 
Started by christoffe - Last post by PeterSt
do you use Neutrik BNCs with your Van Damme cable?

Hey Matt,

Am I using a Van Damme cable ?

Peter

 65 
 on: October 14, 2014, 06:05:08 pm 
Started by christoffe - Last post by CoenP
Irrc the AUDIO spec for XLR is 2x600 ohms, but this is not related to HF reflections, but to standardizing the interface while supporting long length of cable while minimizing capacitive loss of the audio signal. I would guess that no other spec than geometry and durability will be relevant for this application. Otoh all connectors will off course exhibit an impedance yet not by design (with audio in mind).

Like Ethernet, USB also has a balanced signal (stated as 90 ohms impedance) so I guess a 110 ohm balanced standard will be feasible too with different geometry and dielectric, at least for the cable. Give the lousy connectors of the aforementioned two I guess it is not considered very relevant for proper termination. Ok, the 40/100 Gig ETN connector is looking sturdy though.

regards, Coen

 66 
 on: October 14, 2014, 05:49:52 pm 
Started by CoenP - Last post by CoenP
@all,

Thank for the tips! The tech specs of the supra cable looked sound to me so I ordered a 1m length that will arrive in the coming weeks.

I'm rather discouraged by the audibility of the USB cable since it will be another variable in the audio chain making it more difficult to optimize with the aid of others (that have different setups). Hopefully the nice specs will translate into superior sound.

I will also put some more effort in eliminating noise at the computer side. This may provide insight into to the vast differences in sound between usb cables (despite the undoubtedly excellent noise suppression in the NOS1a).
Groundloops aside, I can envision reducing amplitude modulation of the carrier signal bij stabilizing the DC power and frequency modulation by enhancing the clock, which in itself is also for a large part a power supply stability solution. I hope that I catch noise on the USB powerline by these better supplies or maybe even disconnecting it at the USB3 card side.
The design of the SUPRA cable may help here also.

regards, Coen
 

 67 
 on: October 14, 2014, 05:09:14 pm 
Started by christoffe - Last post by Matt
Peter,

do you use Neutrik BNCs with your Van Damme cable?

KR

Matt

 68 
 on: October 14, 2014, 10:39:40 am 
Started by christoffe - Last post by PeterSt
Hey Alain,

With the notice that you should be sleeping at this time and that the danger exists you will never get some sleep any more for this night :

I thought you dared to get rid of the pre-amp long ago my now ?
Apparently not.

Using the preamp does not make sense in this realm (of the BNC cable) although it should be able to improve just the same. But why go through the effort if you can do half of it anyway, the other half being destructive behind your back ? Thus :

a. Using the preamp is for the worse (and if too much digital attenuation is needed get another power amp swoon);
b. Output impedance of the preamp will be 600 Ohm or so, and thus this (75 Ohm) does not apply there;
c. Meanwhile nothing really matches between preamp and poweramp, but this is another (new) story (but read : what prevents the reflections in that connection ?).

I tend to say : Do it all (meaning ditch the preamp to begin with) or do nothing. But this is not really different from me "forbidding" to use a preamp. Between quotes of course, but you know ...

Sweet dreams ! (ahum)
Peter

 69 
 on: October 14, 2014, 10:16:23 am 
Started by christoffe - Last post by AlainGr
Peter,

I understand what you mean. My concern is that while I use a preamp, it would mean that I need 2 pairs of cables and I really am not sure I want to go through the process of having my components fit with BNC connections... Not that I don't understand the benefits, but... And I am not sure why...

Alain

 70 
 on: October 14, 2014, 09:11:23 am 
Started by CoenP - Last post by PeterSt
Quote
Edit: thinking about it again... I may not have understood your point - you mean that the Sotm will not work if power is not applied first at the USB port ?

Alain, exactly. I too wasn't the most clear, but logically there was nothing in my mind about the power to the card itself. So there's a dipswitch on it for USB power, and without that set to On the NOS1 will not work. Again, no clue why but the card will be not compliant somewhere. And not to forget, the card's latency is also not on par, so something is fishy in there. Do notice though that this experience is from when it was first out (over 3 years ago by now ?).

Regards,
Peter

Pages: 1 2 3 4 5 6 [7] 8 9 10
Powered by MySQL Powered by PHP Powered by SMF 1.1 RC2 | SMF © 2001-2005, Lewis Media Valid XHTML 1.0! Valid CSS!
Page created in 0.248 seconds with 15 queries.