seanadams Wrote:
> There isn't a simple answer to this. SB2 uses the PCM1748, but the DAC
> chip alone does not dictate the performance of the whole system - it
> can be somewhat better or much worse than the data-sheet specs
> depending on the design. Since the DAC chip is only one component of
There isn't a simple answer to this. SB2 uses the PCM1748, but the DAC
chip alone does not dictate the performance of the whole system - it
can be somewhat better or much worse than the data-sheet specs
depending on the design. Since the DAC chip is only one component of
the whole clocking + power
http://forums.slimdevices.com/showthread.php?t=15716
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cbemoore
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I know the SB2 has a Burr-Brown in it, but I don't know what calliber.
I'm interested in maybe putting a Channel Islands VDA-1 external DAC on
my SB2, but the Channel Islands unit itself has a Burr-Brown in it. Some
in this forum claim an improvement in sound. Is that because of a
'better' Burr-Br
The PCI bus (the only example I can think of) does this in order to
reduce EMI and switching current at the expense of speed. It's
definitely not the s/pdif spec though, and seems like kind of a bad
idea for a self-clocking transmission line where cable length is not
controlled.
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seanadams
_
Thank you Sean,
That was the information I was looking for.
Actually, it is acceptable to back match a 75 ohm transmission line
with only a source match and an infinite impedance at the load. This is
appropriately known as "back-matching". In this type of transmission
system, the voltage at the
> Ah, sadly I am planning to Raid 0 them. I decided to go with
> the fastest possible C: drive config I could (and yes, I
> realise that raid 0 doubles that chance of catastrophic C:
> drive failure so my backup regime will be rigorous).
>
I don't want to rain on your parade so to speak as fa
The driver impedance is 75 ohms, as should be your cable. If the load is
not terminated (?!?!?!) then yes you'd need to add a 75 ohm resistor. I
have never heard of a DAC not having a termination resistor. Some have a
jumper inside so you can make it terminated or not (in order to drive
multiple
PhilNYC said the following on 12/09/2005 16:42:
WSLam Wrote:
I have personally tried many transports vs the SB2. Honestly i think if
the RIP are perfect, there should be NO difference. The perfect
transport is to deliver the bits accurately. And once you are there,
you can't go 'beyond' that.
WSLam Wrote:
> I believe Sean has already provided very strong data on the SB2 jitter.
Yeah, I saw his post on the data...I believe that compared to the
performance of transports from dCS and the reclocking mechanism in the
Dodson, the SB2 has about 10x more jitter...still an incredibly good
per
I believe Sean has already provided very strong data on the SB2 jitter.
I do have a Big Ben, but I dont necessarily find the sound better with
it in the audio chain.
ws
PhilNYC Wrote:
> Obviously, this is one of those topics that always stirs up some
> controversy...but I am one of those guys w
I'll check out what's happening in the buffer duringthe dropouts
tonight.
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Yes, I saw the product info describing the output drive into a 75 ohm
load. But the real question is...is the SB2 properly backmatched with a
75 ohm impedance to absorb the reflected wave from the load? If the SB2
output impedance is small, say 25 ohms like a typical CMOS driver, then
the actual d
the product info page (http://www.slimdevices.com/pi_specs.html)
says the following about the coax out:
Coax connector: RCA, 500mVpp into 75 ohms
s.
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bludragon Wrote:
> Are you saying it would put packets that have crc error'd into the
> buffer? Would it not drop them before that?
No, not at all. I realize now my analogy was flawed. My point was
that the problems are occurring in the transport, not in the buffer or
player. If the buffer ha
S/PDIF is supposed to be on coaxial 75-ohm cable, connectors, etc.
Therefore, I would start with the assumption that the output stage on
the SB2 is also 75-ohm.
BTW, RCA connectors can never truly be 75-ohm, by their very nature.
The proper connector is BNC, but market pressures have caused RCA
I don't believe it will help him much to watch the buffer screensaver,
because he can hear dropouts when the buffer empties.
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I think the network card in SB2 (ehternet or wlan) will just drop all
packets with error directly and ask the server to resend, without
putting these data to the buffer.
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Are you saying it would put packets that have crc error'd into the
buffer? Would it not drop them before that?
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