adamdea;577147 Wrote:
I haven't tried out the modded audiocom XDAC without the XPSU but am
tempted to experiment now. I have always found it as bit odd that it
only steps down 240VAC to 24 VAC, as I would have assumed that the
point of an external PSU would be to keep to AC/DC conversion
adamdea;576814 Wrote:
Good idea. Mind you, an xpsu tweak is all I need. Just when I thought my
audiophilia nervosa was easing. If you so much as think about veils
lifting...
I don't know about veils lifting... but it does sound good. Must do an
AudioDiff test @ the weekend. Can't trust the
Phil Leigh;576971 Wrote:
I don't know about veils lifting... but it does sound good. Must do an
AudioDiff test @ the weekend. Can't trust the olde ears/brain. An A/B
shows a definite difference at the top end of vocals and cymbals -
seems to take away a slight tizziness. Of course it might
adamdea;577044 Wrote:
Very kind of you, thanks, but I will pass for now. I have just got my
Touch back after audioupgrades fitted the second clock (and connected
the first clock which they had actually not connected- the 44.1/88.2
was still coming from the stock oscillator.) I am not
Waldo Pepper;576817 Wrote:
I have never seen a modern amp with signal transformers in their audio
path.
The original question was about a TVC - a Transformer Volume Control.
Its a transformer with multiple taps and a switch used to select the
appropriate tap. Some people like to use these
The PSU transformer for my DAC has 4 seperate secondary windings...
I've just snubbed two of them (330ohm+0.02uF polyprops)
Will try comparative listening later...
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Phil Leigh;576728 Wrote:
The PSU transformer for my DAC+Buffer amp has 4 seperate secondary
windings...
I've just snubbed two of them (330ohm+0.02uF polyprops)
Will try comparative listening later...
Good idea. Mind you, an xpsu tweak is all I need. Just when I thought
my audiophilia
JohnSwenson;576105 Wrote:
Damping the transformer takes a resistor and a capacitor in series,
connected across the secondary of the transformer. Theoretically you
should measure the transformer and compute the right value for that
particular transformer. I did that for every transformer in
Just a few observations...
If you have decent kit (Linn, Naim etc) then the power cord will make
no difference whatsoever as the PSU will have a decent design to reject
mains born noise. Linear voltage regulators internal to the amp can
remove noise on the input.
A good switching power supply
Waldo Pepper;576189 Wrote:
Just a few observations...
If you have decent kit (Linn, Naim etc) then the power cord will make
no difference whatsoever as the PSU will have a decent design to reject
mains born noise. Linear voltage regulators internal to the amp can
remove noise on the
Phil Leigh;576253 Wrote:
Linn gear that has ultra-high quality SMPS such as pre-amps, CD players,
Tuners etc are indeed unchanged to my ears by mains leads (that I have
tried). For example, Nordost Valhalla made no difference over the stock
mains lead.
However, Power amps do seem to be
adamdea;575632 Wrote:
Absolutely
1 As a matter of interest how easy is it to damp the resonances in a
transformer? It seems from what you say to be something we should all
consider doing if possible. Would this apply to a TVC? I use a large c
core tvc as my pre amp and am very intrigued.
2
wildgoose;575749 Wrote:
Pardon my ignorance. Are we saying with a low-end power-cord, the Touch
can potentially output the wrong 0s and 1s? Or are we talking about
amplifiers/receivers?
Are there checksums in the SPDIF signal? What happens IF some of the 1s
and 0s do get flipped?
For
Well, me asking for this not to turn into an arguement about power cords
has well and truly gone out the window. But, I must say, the opinions I
have just read are the best I have ever seen on the discussion of power
cords. Excellent.
--
Flashgordon400
JohnSwenson;575586 Wrote:
My take is that I HAVE been able to hear differences in power cords, and
I have been able to measure something which seems to have a decent
correlation to those subjective observations (transformer ringing).
What I have NOT been able to do is find any decent
Pardon my ignorance. Are we saying with a low-end power-cord, the Touch
can potentially output the wrong 0s and 1s? Or are we talking about
amplifiers/receivers?
Are there checksums in the SPDIF signal? What happens IF some of the 1s
and 0s do get flipped?
For video, since the signal is
Take a look at this article, this is what got me looking at this subject
in detail:
http://www.hagtech.com/pdf/snubber.pdf
Let me get this straight, you do not believe that transformers have
resonances? Ok so lets go over a few simple questions. What is a
transformer? Its two coils of wire.
You've fallen into the argument abyss of the engineering/analytical
types vs the subjectivists. There's no common ground for discussion,
it's pointless.
People who calculate and analyze often cannot accept that a measurement
or theoretical difference doesn't translate into a perception
Goodsounds;575499 Wrote:
You've fallen into the argument abyss of the engineering/analytical
types vs the subjectivists. There's no common ground for discussion,
it's pointless.
People who calculate and analyze often cannot accept that a measurement
or theoretical difference doesn't
Hi King, and welcome to the forum! Thank you for a most enlightening
first post! Can I quote you on other audio fora?
--
konut
konut's Profile: http://forums.slimdevices.com/member.php?userid=1596
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KingKong;575267 Wrote:
Only if you want to look like a complete moron. I find it wholly ironic
that your avatar claims No BS and yet you fell for a load of it.
Virtually everything you've quoted is complete nonsense and has no
basis in reality. If JohnSwenson has done so many measurements,
Great explanation John, iti s nice to read from someone who knows
electronics and can measure the difference powercables can make in
certain circumstances.
In some cases I can hear the difference cables make in systems and the
typical blunt solderhead's response that it is all just imagination
I know I am treading on thin ice here, but I can't resist mentioning
that I believe there have been (proper published peer reviewed) studies
on acupuncture which showed that it might make a difference to the
perception of pain. This was seized on by practitioners as proof of the
efficacy of the
A lot of the skepticism is created by those who declare huge
differences with these types of changes. I realize some get
enthusiastic about such things, but for me, a huge change in sound
quality is moving from a table radio or a boom box to a good system.
With over 40 years in this hobby (and
mlsstl;574968 Wrote:
A lot of the skepticism is created by those who declare huge
differences with these types of changes. I realize some get
enthusiastic about such things, but for me, a huge change in sound
quality is moving from a table radio or a boom box to a good system. Agreed.
With
JohnSwenson;574856 Wrote:
While I agree that some of these prices are ridiculous, this argument is
not a very good one. This is assuming that the only thing a power cord
can affect is what is coming in from the wall into the device.
Frequently this is not the case.
I have done a lot of
To conclude the previous comments about A power cord having an effect on
the Touch I had purchased an Isotek Multiway and have an Isotek Optimum
pluged into my CD player, I tried the Touch power supply pluged into
both on there own. Yes it was a cleaner sound. Yes I know it's not
realistic having
A £300 power lead and a £300 multi way extension block (that doesn't
come with a lead), there really are some geniuses out there aren't
there ;)
--
andynormancx
Yes, it will. Yes, all of them. Yes, SoftSqueeze as well. What ?
I SAID ALL OF THEM !
andynormancx;574834 Wrote:
How exactly do you think a magically bit of mains wire can improve the
sound of your system ? What about all the non magic wire in your walls
and all the way back to the power generating stations ?
It's magic - just accept it :-)
--
Phil Leigh
You want to see
andynormancx;574834 Wrote:
How exactly do you think a magically bit of mains wire can improve the
sound of your system ? What about all the non magic wire in your walls
and all the way back to the power generating stations ?
+1 Exactly
So you didn't read their printed material or check the
andynormancx;574834 Wrote:
How exactly do you think a magically bit of mains wire can improve the
sound of your system ? What about all the non magic wire in your walls
and all the way back to the power generating stations ?
While I agree that some of these prices are ridiculous, this
Hi Flash, Power cords on transports can make huge changes on the sound,
and I have found on my SB3 that various power supplies change the sound
even when using the digital out into a Genesis digital lens performing
buffering and re-clocking. In my case, since I am buffering the
digital out, I
Sorry that this may be the wrong forum, but this thread is getting at my
question.
I have found that a linear power supply does provide a noticeable sound
improvement on my SB Duet Receiver. Unfortunately, I cannot find the
correct size connector anywhere. I am not sure what size connector
Have you checked Mouser or Digikey or Farnell?
--
m1abrams
m1abrams's Profile: http://forums.slimdevices.com/member.php?userid=850
View this thread: http://forums.slimdevices.com/showthread.php?t=78938
Man, wish I could remember Robb. I got mine from the local Radio Shack
after seeing specs online. Google something like squeezebox power
connector size mm . I couldn't find anything too conclusive looking
through those search results quickly though. I think it was around $2
for a pack of two,
As a big believer and user of high quality power cords for the rest of
my HiFi / AV system, my question is, would a descent power corded
socket make any difference to a device that produces Zero's and One's
as a signal. This is not an invite for a debate about power cords. Done
that and got shot
must resist urge
To answer your question yes assume it has the same power requirements
as a CD Player.
--
m1abrams
m1abrams's Profile: http://forums.slimdevices.com/member.php?userid=850
View this thread:
LOL, sounds like you've been there before.
Thanks for your advice. The only reason I asked is because the noise
floor when the music is very quiet seems to be zero as is. I will give
it a try. See if I can squeeze the last little bit of quality out of
what to me is an amazing device already.
Also have to resist some urge...
For no compromise, try battery supply.
I don't know if there is something established to get 5V, either a
linear regulator, or 4*1.2V NiMH cells will get you close.
Only loosely related praise: I've measured the digital out of the SBT,
and can say it's the best
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