P Floding;151621 Wrote:
> I haven't tested using a battery, but I have a gut feeling that galvanic
> isolation is more important than minute thermal/chemical reaction noise.
> (Meaning that a battery would be a good thing.) However, a battery must
> still have bypass caps so the internal frequenc
Gildahl;151538 Wrote:
> I'm very interested in learning more about this battery solution. I've
> asked about this here before, but received replies that kind of
> discouraged the idea. What do folks here think about chemical reaction
> noise, non-sinusoidal waves and other battery issues? It a
adamslim;151571 Wrote:
> I'm with Phil here. A/B is great for showing differences, but what does
> that mean? I find I have to live for a system for quite some before I
> can really decide if it's better.
>
> Yes there are often gross differences in tonality, but these don't
> really mean anyt
adamslim;151571 Wrote:
> I can thoroughly enjoy radically different systems; there's no single
> 'best', IMO.
Absolutely agree!
I'm lucky enough to have the space for two independent systems,
one with cone speakers & high-power transistor amps (B&W + Krell),
the other with electrostatic speaker
P Floding;151499 Wrote:
> As I said, A/B with level matching is useless for picking a "winner". I
> stated exactly why earlier.
I'm with Phil here. A/B is great for showing differences, but what
does that mean? I find I have to live for a system for quite some
before I can really decide if it'
peejay;150623 Wrote:
> I recently invested in a 12V lead acid battery - completely sealed so
> 'clean' for a domestic environment, purchased a DC-DC regulator and am
> VERY happy with the result. How did it affect the music - In every way
> an AC supply cannot. Take my advice and look at battery
opaqueice;151493 Wrote:
> I don't agree it's a no-no. In fact I don't know how you would possibly
> decide which you like better other than by A/B - the only alternative is
> to only listen to one, which would make the decision rather
> meaningless...
>
> Probably you mean rapid switching betwe
P Floding;151473 Wrote:
> I think strict A/B is useful to establish if a difference exists, as you
> say. But sometimes the difference is very, very obvious, in which case
> A/B becomes pretty meaningless. Sometimes A/B with level matching is
> used to try to appoint a winner in a test, and that
opaqueice;151461 Wrote:
> Well, here we're mainly trying to determine if there is a difference at
> all. Deciding which is better, as you are pointing out, is tricky and
> another question entirely.
>
> I was worried that one SB might simply be slightly louder than the
> other. This could hap
P Floding;151427 Wrote:
> On the matter of volume levels:
>
> All sorts of junk that makes it into the digital signal will ADD to the
> spectral content (same with any distortion, BTW). Hence, getting rid of
> this junk will make the signal seem quieter.
>
> If one doesn't turn up the volume to
peejay;151446 Wrote:
> I don't wish to distract anyone from this exchange, and I certainly
> cannot offer much more than I already have to this thread on the topic,
> but I can't help noticing how discussions over power supplies seem to
> bring out the most animated opinons (if anyone remembers t
El Duderino;150821 Wrote:
>
> However, this thread doesn't need to deteriorate into an argument
> between those who believe that modded power supplies make all the
> difference and those who do not. All opinions are valued!
> El Duderino
I don't wish to distract anyone from this exchange, and
opaqueice;151344 Wrote:
> Hi Tom,
>
> if it's not too much trouble, would you mind giving a few more details
> on your test?
>
> Specifically:
>
> Did you make sure the volumes were level, and if so, how? (This
> question is absolutely crucial!)
>
> How did you blind it - did a third perso
SoftwireEngineer;151308 Wrote:
> I was listening to the digital out, using the Toslink, on my Panny XR55.
> [EMAIL PROTECTED] thinks my cheap Panny with its own switching power
> supply might be adding a 'hash' to the sound, masking the improvement
> gained from the Elpac. This is quite possible,
adamslim;151361 Wrote:
> To throw a potential curve ball, the mains is usually much cleaner at
> night, as the people next door are not constantly flicking TV channel
> and switching the kettle on. This might make a difference.
>
> (Although I would expect that difference to make them closer wh
SoftwireEngineer;151308 Wrote:
> I can hear the differences better when the ambient noise in the room is
> low (read as when kids are asleep late in the night).
To throw a potential curve ball, the mains is usually much cleaner at
night, as the people next door are not constantly flicking TV cha
opaqueice;151344 Wrote:
> Hi Tom,
>
> if it's not too much trouble, would you mind giving a few more details
> on your test?
>
> Specifically:
>
> Did you make sure the volumes were level, and if so, how? (This
> question is absolutely crucial!)
>
> How did you blind it - did a third perso
Hi Tom,
if it's not too much trouble, would you mind giving a few more details
on your test?
Specifically:
Did you make sure the volumes were level, and if so, how? (This
question is absolutely crucial!)
How did you blind it - did a third person make the switch? Could you
see them? Were t
NewBuyer;151109 Wrote:
>
> Softwire, Greg, your feedback is very interesting. Just curious please:
> In your comparisons, were listening to the analog or digital outs of
> your SB (or did you try both)?
I was listening to the digital out, using the Toslink, on my Panny
XR55. [EMAIL PROTECTED] th
tomjtx;151199 Wrote:
> too offensive to merit a response
I thought it was quite a good post, actually. The scientific method,
such that it can be applied to audio, would retain all curiosity for
unexpected factors and remain open. While I have respect for what you
have done, I feel that your '
adamslim;151234 Wrote:
> I thought it was quite a good post, actually. The scientific method,
> such that it can be applied to audio, would retain all curiosity for
> unexpected factors and remain open. While I have respect for what you
> have done, I feel that your 'now it is decided' attitude
NewBuyer;151178 Wrote:
> > tomjtx;151118 Wrote:
> >
> >
> > Out of respect for the forum, I will give just a few observations about
> > your claims here, out of many that could be mentioned:
> >
> > - How can you possibly say AC power was not a factor? You already said
> > the stock SB PS plu
tomjtx;151118 Wrote:
> > tomjtx;151118 Wrote:
> > ...it wasn't people "thinking" they heard a difference, they did hear a
> > difference, period...
> >
> > ...AC power was not a factor...not a result of listener bias or
> > "belief".
> >
> > ...Poor AC does not affect or invalidate the goals o
I've just finished playing with the old computer PSU, its an old one not
an ATX supply ($5 used). 5.19 volts unloaded. It sounds quite good to
me.
The down side the fan is noisey and it interfers with the squeezebox
especially noticeable during booting up of the SB. There is an unusal
noise as th
NewBuyer;151109 Wrote:
> Good to see a consensus forming here, that poor AC power
> quality/delivery (as suggested earlier in this thread) could perhaps be
> one of the variables here affecting any PS comparisons (among many other
> variables). This could also at least partially account for why s
tomjtx;150950 Wrote:
> Lowering the noise could be why the elpac sounds better in my system and
> maybe that has nothing to do with it's being a linear supply?
> What are your thoughts on that, Greg?
I haven't done enough tests to determine that, but its sounds possible.
I have a unfounded preju
NewBuyer;151109 Wrote:
> Good to see a consensus forming here, that poor AC power
> quality/delivery (as suggested earlier in this thread) could perhaps be
> one of the variables here affecting any PS comparisons (among many other
> variables). This could also at least partially account for why s
Softwire, Greg, just curious please: Were listening to the analog or
digital outs of your SB?
--
NewBuyer
NewBuyer's Profile: http://forums.slimdevices.com/member.php?userid=7862
View this thread: http://forums.slimdevices
SoftwireEngineer;151048 Wrote:
> I also suspect that this could be the case. I use a Blue Circle Mr1200
> Balanced power conditioner daisy chained to a Furman Power Factor Pro
> power conditioner, to which I plug both my SB3 and my digital amplifier
> Panny XR55. The difference between the modded
tomjtx;150950 Wrote:
> Lowering the noise could be why the elpac sounds better in my system and
> maybe that has nothing to do with it's being a linear supply?
> What are your thoughts on that, Greg?
I also suspect that this could be the case. I use a Blue Circle Mr1200
Balanced power conditioner
Greg Erskine;150872 The difference was just enough to make me think building a
proper sized PSU with attention to lowering noise, PSRR and proper wiring may
be worthwhile.
Regards to you all[/QUOTE Wrote:
>
>
> Lowering the noise could be why the elpac sounds better in my system
> and maybe
Greg Erskine;150872 Wrote:
> Spurred on by the cordial discussions in this thread, I thought I'd
> reconfigure one of my PSUs to make it suitable for powering a SB3.
>
> Regards to you all
LOL gotta love that down unda humor
--
tomjtx
)p(;150839 Wrote:
> Hi Tom,
>
> Interesting, your test is the first seriously done blind test switcher
> versus linear supply i have read here. I was sceptical before if it
> will make a difference, especially for the digital outs. Passing a
> blind test is good enough for me to give it a try my
Spurred on by the cordial discussions in this thread, I thought I'd
reconfigure one of my PSUs to make it suitable for powering a SB3.
The PSU is one secondary of a 12-0-12VAC 300VA thru a bridge rectifier.
Filter is a CRC 10,000uF - 1ohm - 10,000uF, caps bypassed. Regulator is
a LM396K (10amp TO
tyler_durden;150825 Wrote:
> Some things are worth testing and others are not. It IS possible (and
> usually less costly) to use one's intellect to deterimine which is
> which. For example, if I were to suggest that the best mod you can
> make to improve the sound of your stereo is to hold a lo
tyler_durden;150825 Wrote:
> Some things are worth testing and others are not. It IS possible (and
> usually less costly) to use one's intellect to deterimine which is
> which. For example, if I were to suggest that the best mod you can
> make to improve the sound of your stereo is to hold a lo
Some things are worth testing and others are not. It IS possible to use
one's intellect to deterimine which is which. For example, if I were to
suggest that the best mod you can make to improve the sound of your
stereo is to hold a loaded 44 caliber gun to your head and pull the
trigger, no one
Thanks to all of you for the varied suggestions.
I also appreciate the varied opinions and the attempts to qualify
these. However, this thread doesn't need to deteriorate into an
argument between those who believe that modded power supplies make all
the difference and those who do not. All op
tomjtx;150816 Wrote:
> I have 4 dedicated lines in my listening room. 10 guage romex and
> hospital grade outlets. The rest of your post isn't worthy of a
> response
Then why do you suppose the stock PS in a power conditioner sounded
better to you, as you reported above? Again, you just don't so
NewBuyer;150810 Wrote:
> Tyler did not seem rude. Nor was his statement in any way "idiotic". And
> he may be correct as well - in spite of your attack, and the pride you
> have in your very special ear training.
>
> If you did the tests you claim, it could simply show that you have very
> poor
tomjtx;150656 Wrote:
> ...I have a lifetime of ear training... I got it right 10 out of 10...
> Stock PS in wall = hash, grain and harshness in high frequencies
> Stock PS in a power conditioner= significantly cleaner, sweeter
> highs,better soundstage
> Modded Elpac in Power cond.= Another signi
adamslim;150705 Wrote:
> I agree with your posts, but man you need to chill out a bit; there's no
> point having perfect ears if your heart explodes before you're 40!
Don't worry, my blood pressure didn't go up when I was posting, that
happens when my girlfriend drops by :-)
--
tomjtx
---
tomjtx;150685 Wrote:
> I've now made my position clear and don't feel a need to explain it
> further.
I agree with your posts, but man you need to chill out a bit; there's
no point having perfect ears if your heart explodes before you're 40!
--
adamslim
SB3 and Shanling CDT-100, Rotel RT-990
peejay;150624 Wrote:
> No one blows hot air on these forums, these forums are for sharing
> ideas. Egos are put aside and friendly exchanges of experience are what
> happens here. Nothing else is welcome.
Again, Tyler's post was not a friendly exchange. He made a blanket
statement
"there is no d
NewBuyer;150614 Wrote:
> I just wanted to say thanks to tyler_durden for giving this honest
> opinion, and for not being intimidated from expressing it by offensive
> posts like that from 'tomjtx' above (unless that post from 'tomjtx' was
> intended to be a joke post).
>
> I might mention that a
opaqueice;150644 Wrote:
> Tom, have you actually done a proper blind test on the two power
> supplies? I've several times considered buying one, but I'm a skeptic
> on these things and have never seen any evidence or convincing reason
> to believe that it's worth it. However if you have actuall
tomjtx;150401 Wrote:
> you are absolutely WRONG about that. I am a professional musician,
> trained to hear far more subtle differences than the PS makes. I can
> listen to a piece of music and then write it down. I can identify
> numerous clasical guitarists in blind AB with 100% accuracy simply
ceejay;150630 Wrote:
> If only! ;)
Well, sometimes..
--
peejay
After Silence, that which comes nearest to expressing the inexpressible
is music - Aldous Huxley.
peejay's Profile: http://forums.slimdevice
peejay;150624 Wrote:
> No one blows hot air on these forums
If only! ;)
--
ceejay
ceejay's Profile: http://forums.slimdevices.com/member.php?userid=148
View this thread: http://forums.slimdevices.com/showthread.php?t=29
My heart sinks when I see a reply to a forum thread which attacks
another member. Since my first encounter with Slim devices forum my
experience has been a pleasent experience of an exchange of ideas
between members, and generous gifts of good advice for those who need
it, from those who have that
tomjtx;150401 Wrote:
> you are absolutely WRONG about that. I am a professional musician,
> trained to hear far more subtle differences than the PS makes. I can
> listen to a piece of music and then write it down. I can identify
> numerous clasical guitarists in blind AB with 100% accuracy simply
I recently invested in a 12V lead acid battery - completely sealed so
'clean' for a domestic environment, purchased a DC-DC regulator and am
VERY happy with the result. How did it affect the music - In every way
an AC supply cannot. Take my advice and look at battery solutions. You
only use them
tyler_durden;150373 Wrote:
> The audio circuits inside the SB3 are powered by switching regulators
> inside the SB3. Switching to a linear supply external to the SB3 does
> not eliminate the switching regulators inside the SB3. There have been
> many threads about this, and Slim Devices people
If you can can operate a soldering iron, here's another
linear supply that can be used with the SB:
http://www.welbornelabs.com/psreghc.htm
--
jhm731
jhm731's Profile: http://forums.slimdevices.com/member.php?userid=7685
El Duderino, I was skeptical of the whole mod thing as well, but I
really don't think you'll regret going this route. Looking forward to
hearing your impressions of it!
Note that the black gate capacitors he installs can take a few hundred
hours to break in. Supposedly the sound can vary during
tyler_durden;150373 Wrote:
> The audio circuits inside the SB3 are powered by switching regulators
> inside the SB3. Switching to a linear supply external to the SB3 does
> not eliminate the switching regulators inside the SB3. There have been
> many threads about this, and Slim Devices people
The audio circuits inside the SB3 are powered by switching regulators
inside the SB3. Switching to a linear supply external to the SB3 does
not eliminate the switching regulators inside the SB3. There have been
many threads about this, and Slim Devices people did some measurements
to confirm the
El Duderino;150347 Wrote:
> Thanks for the detailed reply JohnnyLightOn. Much appreciated. I have
> contacted Wayne at Bolder and asked a few questions about the mod.
> It's not the cost of the mod (which, overall, is not that bad) but I
> have always been pretty sceptical about "audiophile" t
If you do try any blind testing, please post the results - that would be
of great interest to many here.
--
opaqueice
opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234
View this thread: http://forum
Thanks for the detailed reply JohnnyLightOn. Much appreciated. I have
contacted Wayne at Bolder and asked a few questions about the mod.
It's not the cost of the mod (which, overall, is not that bad) but I
have always been pretty sceptical about "audiophile" tweaks. The
placebo effect can be s
El D, there's no question that $100 (really $131 delivered for the Elpac
+ mod) is not a small amount when compared to the price of the SB3
itself and perhaps by itself as well. It depends on what your audio
budget is. My feeling is that I want to keep the SB3 for a while, and
also that it's wor
adamslim;149965 Wrote:
> The Elpac is 120V input, so I think you may have issues here in the UK.
> Is just a bit of soldering not, well, fun...? ;)
True but I do not reside in the UK any longer. I guess the fact that
all my hi-fi kit is of British origin may have thrown you off a little!
Joh
I bought the Elpac with the DIN connector and had it modded by Wayne at
BolderCables.com. Cost of the mod was $85 including shipping to me (I
had Digikey ship the Elpac directly to Bolder Cable), so the total
expense was about $130. The mod details are described on his website;
they include chan
El Duderino;149960 Wrote:
> Thanks for the suggestions. I'll look into the options. The easiest
> option might be to buy the Elpac with the DIN connector and look for
> some kind of a plug adapter to make it compatible with the Squeezebox
> power input socket.
The Elpac is 120V input, so I th
Thanks for the suggestions. I'll look into the options. The easiest
option might be to buy the Elpac with the DIN connector and look for
some kind of a plug adapter to make it compatible with the Squeezebox
power input socket.
El Duderino
--
El Duderino
The ELPAC WM075-1950-760 is the correct model number for a 5 volt, 1.5
amp, linear, regulated, wall wart type of power supply with the correct
connector that will plug direct into a Squeeze Box.
Unfortunately ELPAC has discontinued production of this model in favor
of a switching design. There ma
El Duderino;149784 Wrote:
>
> Elpac seem to be unavailable from online retailers. Are there any US
> 120V input options that are available nowadays?
There is one* Wayne of Bolder has written a bit about. The data says
regulated switching, but Wayne says it's linear regulated (?):
http://www.b
67 matches
Mail list logo
