kijanki
Responses from kijanki
| 75 Ohm BNC cable @jasonbourne71 Reflection coming from the end of the cable (if any) can deform original edge affecting timing. For 1.5m cable reflection from the end of the cable comes back in 15ns (5ns/m x 1.5m x 2). Even the very beginning of transition (... | |
| 75 Ohm BNC cable Rule of thumb says that cable becomes transmission line (reflections) when signal propagation one way is longer than 1/8 of signal transition. Since typical transition is in order of 25ns it is about 3ns propagation. Signal travels about (dielec... | |
| Would I be wasting my money to get a turntable? What happens when your PWM’s oscillator signal frequency is not high enough? This frequency, likely >0.5MHz limits amp's bandwidth. My older Icepower was limited to 60kHz, resulting in 20deg phase delay at 20kHz. It can affect summing of t... | |
| Would I be wasting my money to get a turntable? What do you call the conversion of an analogue signal to a PWM/PDM or ΔΣ modulation and its subsequent filtering to recover an amplified analogue signal? Because if that’s not digital, then CD is not digital and streaming is not digital either. H... | |
| Silver spades Total spade resembles roughly AWG10 and distance of 1/2". Copper 10AWG resistivity is about 0.001ohm per foot. 1/2" spade would have resistance of 0.000042 ohm. Silver spade would be 0.00004 ohm, while aluminum spade would be 0.00007 ohm. Such... | |
| Do Harbeth speakers really need a 4000 damping factor? Membrane motion braking current (Lenz law) passes thru speaker, wire, amplifier's output and the other wire. Would adding 0,002ohm (DF=4000) instead of 0.02ohm (DF=400) to speaker impedance make it sound different (damp/brake better)? Even if we... | |
| Speaker wire impedance? Speaker impedance? I suspect you measured wrong. Kimber 8TC is gauge 9 that is 0.0008 ohm/ft. In order to get 0.05 ohm you would have to have 31 ft cables. For 0.07ohm it would be 44 ft. Revel is likely concerned that additional resistance in series with speaker’s c... | |
| Unplated copper spades/banana Gauge 10 copper wire has resistance of 0.001 ohm per foot. Gold plating is typically 0.00001" thick. It adds additional resistance in order of 1 microohm (o.ooooo1 ohm). Perhaps there are other effects when signal is crossing boundary of two diffe... | |
| External Power Supply For My Audiolab 6000CDT CD Transport @invalid Let me offer this - all power supplies are SMPS (they switch and the power is delivered in narrow current spikes with width dependent on the load). Some operate at 120Hz others at 100kHz and the best (like Rowland) at 1MHz. In linear sup... | |
| Your last concert was to see who and when? Joe Bonamassa, Aug 4 Red Rock Amphitheatre Colorado. Fantastic performance and the venue. | |
| Why can I feel vibration when I touch my network switch or streamer? Magnetostriction | |
| Six DAC Comparison @yyzsantabarbara Thank you for suggestion - especially important to me, since you know AHB2 and HPS-938 | |
| Chord Hugo TT2 - My experience so far @audphile1 I agree - it is only recommendation (it works for me). As for USB, they likely stressed out the fact that in async USB there is no possibility of jitter (since clocks are asynchronous) - ignoring possible indirect source - an electri... | |
| Six DAC Comparison @audphile1 +1 | |
| Chord Hugo TT2 - My experience so far It might not always work, but logically most of the signal gain should be obtained in quiet environment (preamp or DAC) and not in the power amp (heavy currents, more noise) - that's at least what Benchmark recommends for my DAC3+AHB2 combo. |