mapman
Responses from mapman
| high power tube amps vs ss Of course, for full range scenario, nothing wrong with using a low power SS amp in place of a tube amp. Or a larger tube amp with smaller speakers, although this is where the size and power required of the tube amp will result in limited good choi... | |
| high power tube amps vs ss So, individual technical peeves and preferences aside, in the end here are things I think really matter regarding choice of amp and speakers to match.1) If limited frequency range down to only 50-60 hz or so is your game, the world is your oyster.... | |
| Ohm Walsh Micro Talls: who's actually heard 'em? I was re-reading a detailed technical review with detailed bench measurements of the older Walsh 200 mkII Here.The impedance measured mostly between 8 and 25 ohms for most of the frequency range, down to 40 hz or so where the port kicks in, at whi... | |
| high power tube amps vs ss Audiogon often seems a magnet for unique or differing perspectives on good sound. SS is old hat and boring. Does not attract much attention these days as a technology. Class D amps are newer and get a lot of attention here. Tubes are cooler and mo... | |
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| When an amp puts out 90 watts.... I have seen some pnm impedance measures in stereophile that show wide impedance flucuations from 4 to 16 ohms at various frequencies. Far frm the constant high impedance that an amp like that would probably do best with. | |
| When an amp puts out 90 watts.... Fin, I think that is indicative of sn amp with higher output impedance, usually but not always an attribute of tube amps. An amp like that will probably perform best into higher impedance speakers, ie 16ohms, which is not common. Its a special bre... | |
| high power tube amps vs ss Atmasphere, I've found that chart to be a useful tool to help me understand audio better. What I have heard over the years is consistent with what the chart tells me.IS there some way you can reconcile the theory you support with the chart? For ex... | |
| high power tube amps vs ss "If we can't measure it can it exist? Sure!"Sure. But some actual evidence always helps, especially in the often twilight zone of high end audio.If you can't measure it, it does not prove it is not there, just that there is no evidence to substant... | |
| Peachtree Decco 65 DAC observations The arcam alone is likely no slouch.I found the following on the Arcam site about it:The 7SE uses a latest generation 24 bit DAC from Burr Brown and also features lower jitter levels and improved power supplies. Arcam has added an optical digital ... | |
| Fuses that matter. "lol...Mapman, ah c'mon brother, were all mental someway or another :P"You got that right...brother (pythons flexing...)! | |
| high power tube amps vs ss The huge unflatness of the ear sensitivity chart would also seem to debunk any claims one might make about being able to hear flat frequency response. If you hear it as being flat, it in fact cannot be. Significant equalization would have to be ap... | |
| high power tube amps vs ss "An excellent example is how some amps can sound bright, but measure the frequency response and they are perfectly flat. "The ear sensitivity chart in the diagram I shared alone would seem to explain that. We don;t hear bass as well as other frequ... | |
| high power tube amps vs ss "This is because trace elements of odd ordered harmonics are interpreted by the ear as brightness even though it does not show on the instruments."I have trouble understanding how the ear hears something as "bright" that does not evidence itself s... | |
| Peachtree Decco 65 DAC observations "Obviously, the Sabre DAC should push a better sound, correct? WAY better? "Not knowing much about either DAC in play here, why should the Sabre DAC necessarily be better?1) there is a lot of variability in how DACs sound.2) the determination whic... |