kijanki
Responses from kijanki
| 100 watts enough? 88dB - 12dB (4m distance) +3dB (room reflections) +3dB (two speakers) = 82dB@1W = 92dB@10W = 102dB@100W | |
| streamer to DAC connection jw944ts, When cable impedance is perfectly matched to DAC then length of the cable doesn't matter, but when it is mismatched then you'll get reflection from the end of the cable. This reflection originates from the beginning of the transition (k... | |
| BNC Cable is RG6 the best? @ozzy It all depends on the slew rate of your clock. For typical transport (25-30ns) you need at least 1.5m or less than 0.5m, but the latter should include all connections (inside of the clock and DAC), so safer would be <0.25m for the cabl... | |
| BNC Cable is RG6 the best? @ozzy 0.05m = 5cm ????If you can make such short cable then you don't have reflections, no matter what you use. | |
| BNC Cable is RG6 the best? There are versions of RG6 with single dual or quad shielding. Other than that, the difference between different cables with the same characteristic impedance is high frequency loss - not important for short distances. Cheap looking cable, as wel... | |
| Blindfold Speaker testing Long time ago my brother auditioned speakers in audio store. Salesman stated that first speaker is so good, that basically there is no need for anything else and it sounded good indeed. Then he presented more expensive one just in case "if my brot... | |
| Is usb reclocking necessary? @yage Thanks. In that case I cannot see any reason even for filtering. | |
| Is usb reclocking necessary? When DAC is self powered, then USB power is not necessary but GND connection is still required since single ended (GND referenced) signaling is used at the start. It might be possible to lift the GND after music started playing as long as data co... | |
| Is usb reclocking necessary? With Asynchronous DAC like Ayre QB9 data is not delivered in real time*. Asynchronous means that USB clock and DAC’s D/A conversion clock are independent (asynchronous). Reclocking Asynchronous USB doesn’t make any sense. On the other hand "Recloc... | |
| What should I use to convert FLAC files to AIFF? @sc0ttc00ter I recently started using https://www.freac.org/ for batch-converting to AAC format (for the car), but it converts anything to anything and I like always free programs (continuous builds). I still use XLD for ripping CDs. | |
| How to fix my preamp dilemma Loud humming transformer might be a sign of fried rectifier diode - inexpensive repair. I wouldn't turn it on to avoid further damage. | |
| Why did you choose the components and speakers that are in your system? Furman 20 PFI - protection + clean power without loss of dynamicsAirport Express - to transfer data only (computer not important)Benchmark DAC3 HGC - to make 280ps of AE jitter inaudible.Benchmark AHB2 - very clean and very dynamic.Hyperion HPS-93... | |
| Does the 1.5m 75ohm rule apply to 110ohm? @mesch Input impedance of receiving component has nothing to do with it. We assume 1.5m minimum for average system. In some systems 0.5m might be enough, while others will require 2m. The whole point was that longer cable might be better (cou... | |
| Does the 1.5m 75ohm rule apply to 110ohm? As for speeding the edges - it should reduce noise induced jitter since noise with vertical crossing of the threshold point will affect exact moment of level recognition less. Slow transitions are the weakness of Toslink, making it susceptible t... | |
| Does the 1.5m 75ohm rule apply to 110ohm? sugaboogerReflection starts from the beginning of transition (first knee). Assuming 5ns/m it will take about 7.5ns to travel to the end of the 1.5m cable, reflect and another 7.5ns to come back - total of 15ns. It will miss 12.5ns midpoint of 25... |