kijanki
Responses from kijanki
| Sound Better w/Amp Directly Into Wall Then Thru Zero Surge Amps with Linear Power Supply draw current from the mains in short narrow spikes of very high amplitude. Such current spikes cause larger voltage drop than expected. It can limit maximum output peaks reducing dynamics. For less than maximum pe... | |
| DIY Digital cable question I would connect outer shield to ground at the source (transport) side only. | |
| Is EMI noise in electrical system inaudible? @jumia . If you mean harmonic distortion it is a deviation from original shape of the signal. | |
| Is EMI noise in electrical system inaudible? There are many ways high frequency interference can become audible. One way is simply modulation. Two inaudible. signals mixed on non-linear element, like semiconductor junction, will produce new frequencies, that might be audible. The phenomena c... | |
| Conditioner vs. Surge protector I second Mapman's recommendation for Siemens BoltShield. I installed two of them since I had two free spaces on each side of Siemens Panel. Total of 60kA x 2 = 120kA. In addition I plan to add Siemens QSA2020SPD. (about $80) replacing two circu... | |
| Do you trust your system? It is hard to make A-B comparison with life concert, especially when best seats are not available. We assume that sound of instruments we hear thru our system is true and later compare everything to it. If I have warm sounding system (added even... | |
| CD transports; do they really matter it might not make big difference with DACs that offer strong jitter suppression, like my Benchmark DAC3 (with Asynchronous Rate Converter), but will make some difference with most DACs. Higher end transports tend to have higher slew rate of digit... | |
| How does solo piano help you evaluate audio gear? @mahgister Thank you. I read this while ago in Wikipedia. The title was Piano Tuning. Opinion about sounding "like out of tune" was expressed by John Siau - technical director of Benchmark. It becomes really strange when it comes to digital... | |
| How does solo piano help you evaluate audio gear? Piano has stretched overtones. I believe it is somehow related to the fact that string has mass. Extremely long and thin string under extremely high tension would have straight harmonics, but it is not practical. Because of this stretching pia... | |
| Clocking: again! Asynchronous USB as well as Ethernet are asynchronous, meaning that D/A conversion clock runs independent from incoming data. The only possible difference is how much of ambient electrical noise each cable injects into DAC. Injected noise can aff... | |
| Heat in class A equipment Life of electrolytic caps shortens by 2 for each 10degC increase, starting likely from 50 years. Other than cap replacement from time to time, you should not worry - electronics should last. I have espresso machine constantly on for the last 10 y... | |
| Class A into Class AB According to Douglas Self there is "optimal bias" where distortions are the lowest (he shows charts). Increasing bias above it (overbias) increases distortions. It is trading of crossover distortion with "gm doubling" distortions. Transconductan... | |
| Wireless Subwoofer I use wireless to cut timing off - to send only data. That way anything on computer side (speed, amount of RAM, playback program etc.) doesn't matter. I had bad experience with 2.4GHz mostly because each channel is 3.5 channel wide, so in realit... | |
| Why not use a piece of silver wire instead of a jumper cable? I use: https://www.amazon.com/SET-4-GOLD-BIWIRE-JUMPERS/dp/B005A5Z758 There is also silver plated version available on Amazon. | |
| Streaming music sounds better late at night. Is this just me? We had few discussions on this subject and so far nobody has been able to pinpoint the reason for improved sound at night. I suspect that all factors play small role, including electrical grid pollution, reduced AM waves, reduced cellphone traffi... |