tyler_durden Wrote:
> I think a lot of people have missed the fact (revealed in other threads
> by the CTO of slimdevices) that the power for the analog stages in the
> squeezebox comes from the HV switching converter on the display board.
>
>
> You can mess around with linear regulated suppli
Skunk Wrote:
> Which filtered power stip was it? I know there are some DIY plans out
> there, and some audiophile versions that cost more than my last car.
Its fairly old now. "Einstein Octupus" or similar.. (eight outlets)
I just had it laying around. I would probably spend the money on a
diff
I'm cheap so I simply plugged in the SB's power supply to a different
outlet. The other equipment is connected to a cheap filtered AC surge
supressor strip. I figured this way, any possible switching artifacts
would not enter the rest of the system :-)
--
crooner
--
P Floding Wrote:
> Adding a filtered power strip (it's the only unit on that strip) to
> isolate the SBs power supply from the rest of the system gave a
> remarkable improvement
Which filtered power stip was it? I know there are some DIY plans out
there, and some audiophile versions that cost mo
Heuer Wrote:
> I am convined as I have tried it!
>
> My SB3 feeds through a $100,000 hi-fi system and the move to a linear
> PSU was very revealing. Made a significant change to the sound (for the
> better) and continued to improve as the PSU 'burned in' (and no, I did't
> want to believe it eit
I am convined as I have tried it!
My SB3 feeds through a $100,000 hi-fi system and the move to a linear
PSU was very revealing. Made a significant change to the sound (for the
better) and continued to improve as the PSU 'burned in' (and no, I did't
want to believe it either). Standard supply with
Sonic-wise the best way to improve performance would be by means of a
higher quality external DAC or analog interconnects.
I was never really convinced by the linear power supply upgrades.
--
crooner
crooner's Profile: ht
crooner Wrote:
> I am guessing the greatest effect of a better power supply would be on
> the analog outputs since these are usually quite sensitive to RFI and
> "hash". The digital output's main concern is jitter and I believe the
> SB3 jitter levels are already low by design.
An external linea
When I first read the title of this thread, I thought that someone had
finally realised that you can't turn a SB into a megabucks CDP beater
just by adding a external supply. ;-)
--
Patrick Dixon
www.at-tunes.co.uk
Patric
jonheal Wrote:
> I'm not an electrical engineer, but I know enough to know that noise is
> additive (not counting things like out-of-phase stuff cancelling itself
> out). If there's more noise when one power supply is plugged in vs. the
> other, than the extra noise is the result of the power sup
I think a lot of people have missed the fact (revealed in other threads
by the CTO of slimdevices) that the power for the analog stages in the
squeezebox comes from the HV switching converter on the display board.
You can mess around with linear regulated supplies and ferrite beads
external to
P Floding Wrote:
> I wouldn't go that far.
Sorry. I need to get over the overemphasizing, oversimplification,
embellishing, conjecturing etc. They are truly terrible habits, I
admit.
--
Skunk
Skunk's Profile: http://for
I tend to think white noise is not really the issue. If it increases
linearly with volume and has a uniform frequency distribution (and does
not vary with frequency), then our brain will subtract it out for the
most part. Now, if higher frequencies induce greater levels of noise,
or vice-versa, th
Skunk Wrote:
> Does that translate even indirectly to what people with too much time on
> their hands describe as 'inky black backgrounds'? I hope you know I'm
> partially kidding Jon!
Well, I'm gullible enough that I will go along with just about whatever
escoteric mod the Intelligentsia says wo
jonheal Wrote:
> My experiment focuses on only one characteristic -- audible noise. Power
> supplies may have other characteristics that make one more suited to
> powering audio components over another. But if one's goal is to simply
> inject as little noise into the chain as possible, this exper
Hi Jon,
You're describing a "blackness" test. A very valid test, but one of
many that may be used to decide which PS is better than another. I'm
not an EE either, but the gist of the linear PS preference is that the
switching supply introduces distortion while playing.
So the switching PS coul
Skunk Wrote:
> I'm afraid the scientific field fails to explain the hi-fi phenomenon in
> general though. Otherwise we'd all be using zip cords of the proper
> guage for speaker wire...
I wouldn't go that far. After all, our current technology is created
through science and engineering.
I do ag
jonheal Wrote:
> My experiment focuses on only one characteristic -- audible noise. Power
> supplies may have other characteristics that make one more suited to
> powering audio components over another. But if your goal is to simply
> inject as little noise into the chain as possible, this experi
Skunk Wrote:
> Is the load presented to the power supply not affected by musical peaks?
> Surely not as much as in power amps, but I'm *guessing* listening to
> silence would be inconclusive.
My experiment focuses on only one characteristic -- audible noise.
Power supplies may have other characte
P Floding Wrote:
> I'm afraid only "common sense" doesn't really work when it comes to
> engineering.
I'm afraid the scientific field fails to explain the hi-fi phenomenon
in general though. Otherwise we'd all be using zip cords of the proper
guage for speaker wire...
--
Skunk
---
jonheal Wrote:
> Since I'm not an electrical engineer, may logic may be flawed, but
> here's my proposition as it concerns switching vs. linear power
> supplies, and also choking the power cord with a ferrite core:
>
> My assumption is that whatever noise/coloration/etc. the power supply
> is go
CardinalFang Wrote:
> But how do you tell where the noise is coming from? Amplifer noise could
> be swamping any SB noise.
>
> Paul
I'm not an electrical engineer, but I know enough to know that noise is
additive (not counting things like out-of-phase stuff cancelling itself
out). If there's mor
jonheal Wrote:
>
>
> Also, if you happen the get the White Noise of Death during the
> experiment, it'll probably kill you on the spot ;-)
ROTFLMAO
Actually, this test sounds perfectly logical to me. I have a Benchmark
DAC1 on order, with headphone outs, so can eliminate the "cheap preamp"
p
Well I tried it, but with effecient speakers instead of headphones, and
I only have the original PS- so I guess 'it' is something completely
different ;) I noticed on my system with SB at full volume- no signal,
noise couldn't be detected until 3/4 pt on integrated volume control.
So I turned volu
jonheal Wrote:
>
> To compare power supplies, I suggest turning the volume up to max on
> the SqueezeBox -- not while your playing music, mind you, but while the
> SqueezeBox is idle. Then, turn the volume of your amp up to max. Now,
> get a good set of headphones and listen. Even with the quiet
I'm not sure that noise is the only criterion for choosing between power
supplies. For example, I have been told that a battery will give dead
silent background, but the dynamics in playing music will be different
from an AC-powered supply. Some may prefer the silence, but others may
think the sou
Is the load presented to the power supply not affected by musical peaks?
Surely not as much as in power amps, but I'm *guessing* listening to
silence would be inconclusive.
--
Skunk
Skunk's Profile: http://forums.slimdevic
What is wrong with you? Don't you know by now that you aren't supposed
to suggest anything related to common sense in an "audiophile" forum?
Jeez, if we start with common sense we'll end up sliding down the
slippery slope towards double-blind testing, and we all know where THAT
will get us!
TD
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