ar-t;348180 Wrote:
I ought to have better sense and stay out of yet -another- thread on
glass vs plastic.coax vs TOSLINK, blah, blah.
TOSLINK is a joke, period. Glass (single-mode) fibre systems were never
intended to work at lengths less than 1 km. Sure, they do, but weren't
ar-t;348181 Wrote:
This has absolutely *nothing* to do with jitter.
Correct. We were discussing the size of an input-buffer on a S/PDIF of
a DAC and someone mentioned it better be big to cope with clock
differences... so I did some calc on worst best case scenarios.
ciao!
Nick.
--
DeVerm
DeVerm;348140 Wrote:
Ah, here I go... proof my brain is loosing detail and resolution...
That'll be the whisky, no doubt :)
--
chill
chill's Profile: http://forums.slimdevices.com/member.php?userid=10839
View this
ar-t;348183 Wrote:
BTW..XLR connectorsthey -really- are 110 ohms. But, like he
said..they don't stay that way. (Hint: look at how far apart
the pins are, and how long they are. Look at a BNC. See why now?)
It looks like I can't agree with a lot you write tonight so sorry
DeVerm;348240 Wrote:
It looks like I can't agree with a lot you write tonight so sorry but
no, I don't see it.
cheers,
Nick.
Fine. Suit yourself. Go get a TDR and measure one. Or ask someone who
has done this the last 40 years to do it for you. I have, so you have
your answer.
Pat
--
I did
Choose between coding as spdif od AESEBU
Makes no difference
--
Drekracer
Drekracer's Profile: http://forums.slimdevices.com/member.php?userid=20282
View this thread:
DeVerm;348240 Wrote:
It looks like I can't agree with a lot you write tonight so sorry but
no, I don't see it.
cheers,
Nick.
Fine. Suit yourself. Go get a TDR and measure one. Or ask someone who
has done this the last 40 years to do it for you. I have, so you have
your answer.
As for
ar-t;348326 Wrote:
The non-tech types don't. And a lot of them think that going from
plastic to glass on a LED-based TX is going to fix it. But, I have
people ask me that such-and-such makes a glass fibre for TOSLINK. I
don't know if they claim that, and don't care. Yet, the questions
I did not say that it can't be fixed. You assume that all D/A boxes are
made that way. (They aren't.) Most of the ones who attempt to do that
use a SRC, and usually the worst one that they can find. Which is a
whole new set of problems.
Pat
--
ar-t
http://www.analogresearch-technology.net
stof77;345507 Wrote:
Hello,
In my search of a Dac to connect to my SB3 for a better audio
experience, I 've seen a second hand 3D Lab 2000 (24/96) on sale for
vhat seems to be decent price (1000 euros).
What do you think of the association with my audio system ? (see in my
signature),
DeVerm;347826 Wrote:
Bingo! The recordings that were filtered produced much less brain
activity than did the broad-band recordings. So they knew that the
brain noticed a difference. Then they asked the subjects to comment on
the quality of the recorded sounds, and found that the listeners
DeVerm;348139 Wrote:
tell me where the distortion you refer to is heard best in that song
(time-code)? I'll try to hear it too!No problemo, I'm not at home during week
days, but I'll send you precise
info this weekend (by PM, if you unlock your profile options, otherwise
in this thread).
ar-t;348180 Wrote:
TOSLINK is a joke, period. Glass (single-mode) fibre systems were never
intended to work at lengths less than 1 km. Sure, they do, but weren't
designed to.I don't understand. I've always thought (because I must have read
it
somewhere) that Toslink was multi-mode and that
ah - what DAC are you connecting to?
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...SB3+Stontronics PSU - Altmann
JISCO/UPCI - TACT RCS 2.2X + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods)- Linn 5103 - Aktiv 5.1
Themis;348389 Wrote:
No problemo, I'm not at home during week days, but I'll send you precise
info this weekend (by PM, if you unlock your profile options, otherwise
in this thread).
Themis - Please post it in this thread so we can all listen too!
@ Nick - As I recall quadraphonic (CD-4
Regardless of the science, I've yet to hear any difference between
expensive glass and really, really cheap plastic Toslink in 1m lengths
(which is all I use these days). Also, I've heard some systems sound
very slightly better/different with coax and some with Toslink.
I've also yet to hear any
mvalera;348132 Wrote:
Can't comment on the 1709, cause they don't have the D/A output specs,
but my 3808ci which costs 3x more has worse specs than the SB3 on the
D/A outputs:
THD(+N?)3808ci: 0.008% or -81.9dB
THD+N SB3: 0.002% or -93.5dB
SNR: wash between the two
MikeMike, I have a
ar-t;348179 Wrote:
Tricked, ya...didn't he? (Fink!)
BTW, there is a fancy term for what he is seeing: Gibbs Phenomenon.
Pat
Thanks Pat - very interesting - the maths is a bit beyond me but I get
the idea...
So I opened up the Alan Parsons squarewave track in an audio editor
and it's
OK, makes sense.
Two things going on:
The squiggly lines and the spike on the leading and trailing edge are
the Gibbs contribution. The rounded-off nature of the waveform is the
HF roll-off from the analogue post filters.
So, looks weird, but yet normal
Sort of. The HF roll-off is a bit much.
You are right about TOSLINK. It is some cheap, plastic fat fibre
multimode LED crap. Really horrible and asymmetrical rise/fall times.
The 1 km and above refers to single-mode laser systems. The lasers do
not want to have all that light bouncing back at them from very close
ranges.
Lead to lots
ar-t wrote:
Big difference between works and works really good!
This is a key concept, altho it has to be adjusted. For once it works
good enough to be inaudible, there is no point in caring how close to
the theoretical maximum number of angels that can dance on the head of
the fiber.
There is
So, I guess we all agree that toslink is okay but that some (not all)
manufacturers' implementation of it is a joke.
Probably coax works better in problem toslink boxes because it's
cheaper to build it to a more acceptable level of quality.
a-rt, when you state toslink is a joke I read it like
ar-t;348429 Wrote:
OK, makes sense.
Two things going on:
The squiggly lines and the spike on the leading and trailing edge are
the Gibbs contribution. The rounded-off nature of the waveform is the
HF roll-off from the analogue post filters.
So, looks weird, but yet normal
Sort of.
Thank you Pat for your patient (with simple words) reply : I understand
better now.
Oh, well, and I agree with you pat(farrell): on hifi audio, my own
experience shows exactly what you have mentioned.
In fact, I noticed that measurements are often valid when comparing the
same kind of gear
pfarrell;348438 Wrote:
We really don't know what makes something sound good. There are a
few measurements that clearly correlate with bad sound.
I believe that the engineers don't have the tools to measure what
counts.
--
Pat Farrell
http://www.pfarrell.com/
Careful. You are
Greetings!
ar-t;348327 Wrote:
Fine. Suit yourself. Go get a TDR and measure one. Or ask someone who
has done this the last 40 years to do it for you. I have, so you have
your answer.
But you wrote this:
XLR connectorsthey really are 110 ohms. But, like he
said..they don't
opaqueice;348361 Wrote:
Well, that's interesting - although you have to take such reports in the
popular press with a tablespoon of salt. In my field I find that the
percentage of reports which appear in the major media and are
substantially correct is really quite small (not excepting the
Well, you concluded that I was a non-techie, so see what happens when
you draw the wrong conclusion.
OK, I have more time now, so I will try to explain in terms that a
non-native English speaker can understand.
Look at how a BNC, TNC, Type-N, of even Type-F are made. -The physical
dimensions-
Phil Leigh;348400 Wrote:
Themis - Please post it in this thread so we can all listen too!
Agree. We all have the song ;-)
@ Nick - As I recall quadraphonic (CD-4 anyway) the modulated carrier
for the rear channels had to be done using a seperate circuit to the
special cutter heads since
ar-t;348478 Wrote:
Well, you concluded that I was a non-techie, so see what happens when
you draw the wrong conclusion.
OK, I have more time now, so I will try to explain in terms that a
non-native English speaker can understand.
[...]
This odd thing may indeed measure 75 ohms all by
Yes, they make TDRs for coax and optical systems. It was 25 years ago
when I did fibre, so getting an optical TDR to work was a pain. The
centre core was so far off of centre that it made getting a good
coupling very difficult. (Obviously, they eventually figured out how to
pull fibre, and it is
Look
The thing you want to do is limit the speaker cable length.
Line level is what runs between most devices. It can go as far as
most houses are long plus the necessary up and down distances. For most
people the only line level lines are from the cd player to the
receiver. That is SO wrong
pski;348516 Wrote:
Look
The thing you want to do is limit the speaker cable length. Actually
using these devices, there won't be any long runs of speaker (or any
other cable.)
Line level is what runs between most devices. It can go as far as
most houses are long plus the necessary up
Please, no morons or personal attacks.
A lot of audiophiles seem to think long speaker wires are bad. Folks do
things like each monoblock speaker next to the speaker and run long
interconnects. Of course, running long RCA cables kinda of defeats the
purpose, but who can tell an audiophile
Xanadu --
First, I think your idea is really nice.
As far as amps are concerned, Audio Design Associates makes some nice
multi-channel/zone amps. I had one in my old house and it worked
really nicely with the in-ceiling/wall speakers (SpeakerCraft Canton)
I had around the house. I didn't use
I just run my SB3 locally in each room with an associated pair of
powered monitors. The amps are in the speakers. Only short line levels
wires from each SB3 to the monitors. It's not invisible, but it sounds
great and I can sync them all (4) or not as desired. That includes sync
audio level as
When a DAC utilizes a pulse-transformer on the coax input (like the
Benchmark DAC1 PRE for instance), how much isolation does this actually
provide in practice - does it block *all* possible intercomponent
undesirables from riding the coax interconnect, or just some/most? Is
it still
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