kijanki
Responses from kijanki
| Why do audiophiles shun feedback in amplifiers? It is not only 2nd harmonic, but also Intermodulation Distortion, Bandwidth, Output Impedance - practically everything. The key to avoid TIM is to limit bandwidth at the input to one that amp had before feedback (that extended bandwidth) was appli... | |
| Audiophile Speakers with 25 yr + Longevity John, Thanks. I don't have problem now but like to take precautions for the future, before Hyperion goes bankrupt. | |
| Why do audiophiles shun feedback in amplifiers? Dracule1, feedback is a very good think if you know how to use it. It improves practically everything - reduces distortions (THD, IMD), lowers output impedance*, widens bandwidth. The only problem is that amplifier presents delay to signal. When y... | |
| Audiophile Speakers with 25 yr + Longevity John, Thank you very much. It doesn't sound that difficult. I have one spare (upper) cabinet damaged/crushed in shipping. Midrange speaker is broken into pieces (plastic frame) but I can play with it. Some details of the construction are here: htt... | |
| I'd probably lose this bet.... Let's not forget inductance of straight wire. For instance 20' (counting both ways) of gauge 14 copper speaker wire has inductance of 12.64uH equal to reactance of 1.6ohm at 20kHz. | |
| Audiophile Speakers with 25 yr + Longevity Ivan_nosnibor, My Hyperion HPS-938 speakers have 6.5" midrange with ferrofluid instead of suspension (spiderweb). Speakers are pretty new but I will face this problem in the future. Company itself, if still in business, may belly-up soon. I don't ... | |
| does your system "warm up" and then sound better? Larryi, Electrolytic caps are worse with temperature. ESR increases with temperature sometimes even causing thermal runaway when capacitor heats itself by ripple current times ESR (mostly old dried-up caps). On the other hand electrolyte eats diel... | |
| What can I do to improve my computer? Timlub, as Audioengr said you cannot really improve it other than improving clock (reducing jitter) on the other side of the bridge. You can run all the programs you want in parallel and it won't make a bit of a difference, since it affects only t... | |
| "Native" 192 vs Upsampled 192 quality? How can you compare when your CD data is not 24 bit? Also, the fact that DAC outputs it at 192kHz is not necessarily a good thing, since D/A converter chips have higher THD at higher sample rates. For that reason Benchmark DAC1 outputs only 110kHz... | |
| What are your general thoughts of B&W speakers How many manufacturers offer diamond tweeters? They are certainly at the fore front of technology.Perhaps because it is not superior to Berrilum Tweeters. Steve Mowry says in the article "The Whole Truth About Beryllium Diaphragms: -"For a given g... | |
| Replace volume pot Marakanetz, 50k and 100k pot set at exactly same angle provide almost exactly same loudness since its operation is ratiometric - resistance have nothing to do with it, I used word "almost" because there is not two exactly same pots, even with the ... | |
| Stereo Volume Pot Pots might vary the most at the lowest volume setting but it is difficult to talk about it in terms of resistance because volume pots are used as dividers (ratio of resistance). Max difference of these ratios is often specified by pot manufacturer... | |
| Replace volume pot Most likely it won't do anything for you because pot's are used as dividers and not resistors. They select value around 20k - 100k because smaller values tend to load previous stage while unnecessarily large pots are prone to noise pickup and migh... | |
| CAP QUESTION I assume you're talking about electrolytic caps. If it is power supply cap then it might explode. Reverse polarity causes electrochemical reduction of dielectric leading to short that heats up electrolyte, expanding and possibly exploding. | |
| iTunes dropping album artwork Puerto, You can open properties by right clicking and selecting "Get Info". You can do that to one song or more if you mark them. Sometimes only one song has artwork. I don't know why, perhaps this song was highlighted/selected when I was dragging... |