seanadams;284768 Wrote: > What do you mean by "the specification"? > > // - Use the Coaxial digital output only for audio out > > Do you mean the coax is only for audio out, as opposed to audio plus > something else? In that case I don't understand you. > > Or are you suggesting that the coax will sound better if the other > outputs are turned off? In that case I would like to understand your > theoretical basis for this assertion. > > Or do you mean that coax s/pdif is the only "audiophile worthy" signal > to use? In the case of SB3 I would tend to agree with you there. In the > case of Transporter I would disagree. > > \\ In the SB3, I think the coaxial output presents the best output > possible. By turning off the analog output off, you gain a couple of > benefits. 1) "noise" generate by the analog IC will be minimized. 2) If > by turning off the analog logic, I presume the DACs will draw less > current(power), so more "headroom" is available for the rest of the > system. 3) If in firmware, you've got code running for the analog > logic, perhaps these "threads" could be removed or put to a lower > priority interrupt to reduce CPU utilization. > > // - Minimal jitter (just go as low as feasible) > > Sure. I suppose you will assert that jitter changes from one firmware > version to the next. Can you substantiate that? > > \\ Do you folks get the EE engineers to redo EMC/RFI qualification and > jitter measurement for each code release? If yes, the answer could be > there. > But I don't think the measurements are done for each code release, > because it costs money and time to do it. > > // - reduce EMC/RFI from the digital/analog logic in SB3 > > What is analog logic? > > \\ I refer to the the DACs and related logic. > > // - Wireless connectivity (no ethernet, not exactly audiophile specs, > but that's why I am using the SB3) > > An 802.11 radio is an intentional RF emitter. If you are trying to > minimize RFI you should be using ethernet. > > \\ Agreed, ethernet generate less noise. But putting the ethernet > router and PC together with the hifi setup may mess up things up too. > So the more elegant way is to use wireless. > This is more a less a compromise here. > With ethernet disabled, the "noise" generate from the ethernet logic > will go away. Although not as noisy as wireless, they are probably the > second most noisy digital logic in the system. And they consume around > 0.5W of power. If the ethernet PHY can be powered down, you get less > noise and again, more "headroom" for the rest of the system. > > // - User Interface as secondary(I refer to the display on SB3) > > How does the display relate to the firmware version? > > \\ May I know what is the CPU utilization with and without display > updates? Does the "thread" have a higher priority? > > // - A good supply of current(power) available to the audio logic. > > What do you mean by "audio logic"? Do you believe that it is starved > for electricity? > > \\ This is the interesting portion. Having a beefier power supply > somehow gives audio systems more weight and dynamics. But since the SB > hardware is frozen, turning off unnecessary logic is the only way to > improve power supply headroom. > >
I think this thread should come to an end.... -- kmchow98 ------------------------------------------------------------------------ kmchow98's Profile: http://forums.slimdevices.com/member.php?userid=13270 View this thread: http://forums.slimdevices.com/showthread.php?t=45374 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
