kijanki
Responses from kijanki
| Digital Coax Cable - Does the Length Make a Difference @jaytor You snooze, you lose :) | |
| Digital Coax Cable - Does the Length Make a Difference @ericsch We want to avoid reflections from the end of the cable. These reflections appear on characteristic impedance boundaries (changes). Characteristic impedance is related to geometry and dielectric of the cable and is roughly equal to SQRT... | |
| Oscilloscopes - what specs to look for? Small parasitic capacitance (even few pF) is enough to produce noise. Every scope I've ever used showed small high frequency noise when touching other circuit, even with probe shorted. It becomes a problem only when you need to look at mV level ... | |
| Digital Coax Cable - Does the Length Make a Difference It might sound counterintuitive, but if you cannot use short cable (<1ft), then you have to use long cable (>1.5m). Most of the time 1.5m is the minimum so 2m would be safer. | |
| A cable question, sort of... I would just coil it neatly. For power cables coiling is beneficial (as many turns as possible). | |
| A cable question, sort of... When you "coil" up the wire, you affectively create a parasitic inductorNo, you don't. You're not coiling the wire. You are coiling the cable (big difference). Look at the link at my previous post.In addition increase in reactive impedance, ev... | |
| A cable question, sort of... https://forum.audiogon.com/discussions/coiling-excess-speaker-cable-is-this-a-problem/post?postid=1915050#1915050 | |
| Oscilloscopes - what specs to look for? Ground on a scope is normally chassis ground (on all except fully isolated). Careful when you connect ground both for potential for a short and noise you didn't expect.Even when scope is fully isolated there will be always some very small capacita... | |
| Why not underhung voice coil? @rodman99999 Thank you. As shorting ring they must work as short turn, reducing leakage flux. | |
| Why not underhung voice coil? @audiokinesis Thank you. I can understand it better now. I will try to find out more on Faraday rings. AFAIK they are used to lower influence of magnetic field produced by the coil, but I have no idea what they look like. I cannot find any pi... | |
| Would a wireless volume knob for home theaters be worth it? I cannot imagine big knob on my remote control, so perhaps either small knob or a slider. Buttons on my remote have just right authority/speed and anything else would be just strange (unnecessary). On the other hand I enjoy knob on my DAC/Preamp... | |
| Oscilloscopes - what specs to look for? @jaytor , I noticed that Siglent SDS1202X-E, sold and shipped by Amazon for $359 is identical to LeCroy T3DSO1102 sold for $725.I read that LeCroy relabels Siglent scopes. That would suggest that Siglent is a quality brand. Perhaps one day I wil... | |
| Oscilloscopes - what specs to look for? eyrepm, As Eric said 20MHz is an overkill for audio, but I would buy scope for any possible future adventure in electronics. The basic decision is how much you’re willing to pay. You can buy unknown brand for 30% of the established brand. What you... | |
| Group Challenge - Home lighting, who is in? Erik, perhaps later hour would be better? I know that radio stations have to reduce output power at night, per FCC regulation (better propagation at night), around 6PM. It can be even 7PM or 8PM, taking into consideration time zones and daylight... | |
| Coiling excess Speaker cable, is this a problem? Thank you Al. I just tried to explain why, knowing it is against common belief. |