Re: [SlimDevices: Audiophiles] Any audiophiles got a SB Touch to beta test?

2010-05-29 Thread firedog

SoftwireEngineer;551298 Wrote: 
  I was worried about Welborne labs after Firedog's comment. So after a
 few days of their email saying it has shipped I contacted and they
 shipped me one in UPS 3-day select. I guess it is a small time
 operation and sometimes when they mess up they are not owning up. But
 in my case they remedied it with a fast shipment. This was my second
 purchase from Welborne labs and my first was no problem at all.


It wasn't actually me who made the comment about Welborne. I have no
experience with them. Just wanted to set the record straight. No
offense taken on my part.


-- 
firedog

Tranquil PC fanless WHS server running SqueezeServer; SB Duet through
Empirical Audio Pace Car; MF X-150 amp, MF V DAC3, Devore Gibbon Super
8 Speakers; Mirage MS-12 sub; Dual 506 + Ortofon 20 (occasional use);
sometimes use PC with M-Audio 192 as digital source. SB Boom in second
room. Arcam CD82 which I don't use anymore, even though it's a very
good player.

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[SlimDevices: Audiophiles] Toslink vs Coax SB3 vs Reference [bits are bits (+ Jitter)]

2010-05-29 Thread mswlogo

See the test at the bottom. 

http://www.meridianunplugged.com/wiki/index.php?pagename=RMAATests

The RMAA test is actaully less important than the work I did to
actually diff the results. The Recorded files and the files I hand
trimmed are included.

I used a non 75ohm cable (because I was too lazy to dig one up) and for
one test I used a CO2 converter to convert TosLink to Coax.

Note there are 2 types of jitter.

Peak to Peak and Clock Drift.

The Meridian FIFO (or similar buffering in good DACs) will get rid of
100% of peak to peak jitter.

A cable could change peak to peak jitter but it can't effect the clock
drift jitter.

So with a Meridian system (or a DAC with similar buffering) a digital
cable should make ZERO difference. As well as TosLink vs Coax will make
no difference. It also tells me SpeakerLink (a new Meridian connection)
should make no difference since the DSP Speakers have FIFO dejitter as
well and should eliminate cable differences.

I was a little concerned the DTS Test was not 100% reliable, in that
DTS does handle some errors. I had in the past recorded my own test
wave forms and compared them bit for bit using a wave form editor. But
this test is much more extensive and verifies it's not that hard to
transmit every bit over SPDIF. All that is left with a Good DAC is
effects of clock drift.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

'My Transporter Setup'
(http://forums.slimdevices.com/showpost.php?p=350741postcount=45)
'Hitch Hikers Guide to Meridian' (http://www.meridianunplugged.com)

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-29 Thread Phil Leigh

If you are recording and diffing s/pdif you will never see jitter.
Jitter will only manifest post-DAC (assuming decent, working equipment 
- which you do have!). For jitter to manifest pre-DAC it would have to
be so severe as to change the bitstream - which we all know it doesn't
in the SB2/3/TP/Touch devices.


All the evidence available points to the conclusion that the Touch and
TP are pretty much perfect deliverers of s/pdif to a DAC...


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-29 Thread mswlogo

Phil Leigh;551440 Wrote: 
 If you are recording and diffing s/pdif you will never see jitter.
 Jitter will only manifest post-DAC (assuming decent, working equipment 
 - which you do have!). For jitter to manifest pre-DAC it would have to
 be so severe as to change the bitstream - which we all know it doesn't
 in the SB2/3/TP/Touch devices.
 
 
 All the evidence available points to the conclusion that the Touch and
 TP are pretty much perfect deliverers of s/pdif to a DAC...

I know that, but some don't seem to believe it. SB3 is a perfect SPDIF
deliverer too (both toslink and SPDIF). CO2 converts perfectly and
TASCAM records perfectly. All that is left is jitter. And if your DAC
buffers/reclocks that gets rid of all peak to peak jitter.

So people must have really bad DACs if they can hear differences
between toslink vs coax and this cable or that.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

'My Transporter Setup'
(http://forums.slimdevices.com/showpost.php?p=350741postcount=45)
'Hitch Hikers Guide to Meridian' (http://www.meridianunplugged.com)

mswlogo's Profile: http://forums.slimdevices.com/member.php?userid=9090
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