kijanki
Responses from kijanki
| Suggested PC laptop models for computer audio Are you going to use USB? If so, then speed of computer, type of hard drive, amount of memory etc. are unimportant. It is because asynchronous USB strips timing from the signal and new timing is recreated inside of the DAC. Amount of electrical no... | |
| Tube Watts vs. Solid State Watts - Any credence? 85W vs 70W 5.7% loudness increase45W vs 40W 3.4% loudness increase | |
| Tube Watts vs. Solid State Watts - Any credence? Large headroom doesn't mean poor performance. It means that amp has ability to output higher momentary peaks. Otherwise it is power limited by power supply and/or heatsinks. That's what music is - peaks, gaps and very low average power (few percen... | |
| Safety of Older Electronics Dry power supply caps have high ESR (Equivalent Series Resistance). First symptom is loss of bass tightness/dynamics. I've seen (in commercial equipment) cap that was bulging (placed next to hot transformer). | |
| Safety of Older Electronics O_holter, romm temperature is around 20degC. It is hard to tell what is lifespan of the cap since different companies put different numbers. I would assume >50 years in 20degC. Capacitor will fail only if you leave it unpowered for many years. ... | |
| Tube Watts vs. Solid State Watts - Any credence? I believe Atmasphere mentioned once particular B&W speakers consisting of lower efficiency 4 ohm bass speakers with higher efficiency 8 ohm midrange and tweeter. Speaker has great bass when amplifier doubles current on 4 ohm speaker, but not s... | |
| Recent sound deterioration shrillness, ringing I'm not sure about newer Icepower but older modules, including one in my Rowland 102, have this problem. It is because of usage of single supply while reversing direction of the speaker using 4 Mosfet (switches) bridge. That way, half of supply vo... | |
| Tube Watts vs. Solid State Watts - Any credence? Music requires very little average power, unless one listens to sine waves. It is possible that two of 50W amplifiers can be designed with very different headrooms. One might have small headroom being, for instance class A amp while the oder has h... | |
| Safety of Older Electronics Yes, filter caps go bad when gear is not used for a very long time because electrolyte "eats" out aluminium oxide, a dielectric, reducing breakdown voltage (presence of voltage slowly rebuilds it), but filter caps can also go bad because they simp... | |
| DAC drops out when Furnace starts or stops. HELP Length of the cable might or might not add to the problem.Longer cable allows to avoid first reflection adding/modifying shape of original transition (many factors involved). You GH cable might work better because of length or because of better ch... | |
| Tube Watts vs. Solid State Watts - Any credence? The difference in perceived loudness between 70W and 140W amplifier is only 22%. Tube amps, when overdriven tend to produce "soft clipping" (softer/gradual overdive transition), while SS amp just chops off the peaks producing a lot of unpleasant s... | |
| Another Pair of Skeptics Converted The difference between relatively inexpensive AQ King Cobra (formerly Python) and Acoustic Zen Absolute in my system wasn't very pronounced. Both had same neutral sound but AZ was more refined/cleaner, faster, more vivid, blacker background etc. H... | |
| The missing piece Wonderfull Hyperion HPS-938 speakers. Too bad that Hyperion had no idea how to run business resulting in bankruptcy. Poor customer support, no dealer base (closest dealer to Chicago was in Pennsylvania), no advertising of any kind. Very sad. | |
| NOS DAC's without any digital filtering? There is a difference between upsampling and oversampling, When ratio is even then it is oversampling, usually achieved by usage of PLL. It reduces jitter - that translates to noise in frequency domain. Stronger reduction of jitter can be achieved... | |
| NOS DAC's without any digital filtering? The fact that R2R DAC is used in non-oversampling mode doesn't mean that it has to be redbook (16/44.1) only. You can simply feed it with 192kHz and it will update output at 192kHz. No filtering or interpolation. |