atmasphere
Responses from atmasphere
| Autoformer vs Speaker impedance Curve The bass is markedly more pronounced from my tube amp (60 Watt push pull, KT88, “some” local negative feedback) than my SS CA-2300. It’s also seems “looser” or less defined. Nonetheless, it seems reasonable to my novice brain that if an increas... | |
| Is there actually a difference? The ability to drive difficult loads. How robust is the power supply? etc. You can make an amp that sounds acceptable at low levels driving easy loads. But, when you really need power (not volume), it is like trying to get large flows of wa... | |
| Solid State vs. Tubes - What if Transistors came first? Sorry man, but vinyl is the absolute most compressed and limited medium on the market.I run an LP mastering operation if that’s any help here. You are incorrect about LPs on a number of counts. Specifically with LPs vs CDs, **usually** the CD is m... | |
| Mounting a Triplanar or similar on an SP10 We had a 12" Triplanar on the SP10 MkIII at RMAF about two years ago. We might have something like that this year too. | |
| I need your help. I have an ARC Ref 3, ARC 110, Vandersteen 5As, but no turntable. @inna Ralph always says direct drive Technics, that's his preference, which is fine.We've been making a belt drive machine for about 20 years. It is very neutral but the Technics is less expensive and I think its a better machine and even include... | |
| MAC Autoformers? What is bifurcation in feedback?Put very simply, bifurcation is the process where feedback can cause a 2nd to become a 4th and so on. Norman Crowhurst wrote about this and I think later also Baxandall. If you look into Chaos Theory you will see qu... | |
| Autoformer vs Speaker impedance Curve Guess that explains the bloated bass when I run 802D3s on my tube amp. No- it doesn't. If the amp is able to act as a voltage source, then it can make enough energy to be flat on the 4 ohm load of your woofer array. Since you say the bass is bloat... | |
| Is there actually a difference? Looking at basic specs like damping factor and THD+N doesn't tell you much of anything about an amp. I'd rather have an amp with .01% THD+N with a beautiful negative 2nd harmonic than one that's .001% and all high odd order distortion. The prob... | |
| The Truth about Modern Class D Not to steer this off topic, but no system can produce a convincing life-like sound, partly because the recording equipment cannot capture it.I've seen systems belie this statement. In particular, a direct microphone feed driving headphones can ... | |
| Solid State vs. Tubes - What if Transistors came first? If transistors had come first, the world of rock and roll would be vastly different!! You can't overdrive solid state amps very well at all; rock depends on that overdrive clipping sound that is still only available from tubes. As to hifi, the dis... | |
| Have Passive Preamps Finally Come of Age? ^^ You are correct about that. Redbook has most DACs too much voltage for most amps made. | |
| MAC Autoformers? The Class A3 amp sounded good too. The pot is not dual but single with a switch attached, thus the click into the high damping condition which cuts out all the Zmatic circuitry resistor losses. It is indeed a combination of voltage and current ... | |
| Do electrolytic caps need burn in? @manthikIf the caps needing to form up is what is happening, leaving the caps charged is the best way to do it. Cycling it takes longer- weeks or months instead of days. @jb0194If new caps in a PSU, will the temporary inefficiency manifest as pos... | |
| MAC Autoformers? Speaker manufacturers are not so honest about their impedance range and a curve is the only way to know. If they didn’t do so many tricks in the crossover we would not have this problem. The drivers are not the problem, the crossover is.In my expe... | |
| MAC Autoformers? If you have the tubes tested in a rigorous manner as Roger does, it makes sense that they would hold up better :) It *also* makes a difference that they are mil spec- that might even be the bigger difference! That does not seem like the sort of t... |