atmasphere
Responses from atmasphere
| seeking recommendations for a preamp Seek a preamp the uses 6SN7s in the line section- that is the best tube for that job. You can find such that include a phono section within your budget.Dynaco made a preamp called the PAS-3; if you find one of those used it will likely have to be ... | |
| Tube preamps, basic design parameters Will you be driving your main speakers with the amps driven by this preamp? | |
| Filter Capacitance Even allegedly DC coupled amplifiers have servo controls which effectively limit the amp's low frequency bounds, no? It could be used in that way. If the amp is effectively limited from going all the way to DC then the power supply can't be modula... | |
| Efficient, affordable speakers for SETs? I’ve owned Vandersteen 1B speakers for a long time.They are easy to drive and have a 6 ohm impedance.These are not suitable for an SET. Generally speaking, to get the best out of any SET the amplifier should never be driven past about 20-25% of fu... | |
| Recommended Speaker List for Atma-Sphere OTL Amplifiers. Just for education purposes when you say it doesn’t support the standard do you mean "it is not differential", aka duplicate stages + and -?No- the balanced standard requires that the output not reference ground and otherwise is able to drive a lo... | |
| what pre amp for ATC SCM 40v2 spkrs + 250.5 Pass Labs pwr amp There aren't vintage tube preamps that support the standard, as they are all single-ended. The oldest tube preamps that support the standard were made by us- we made the first balanced line preamps back in 1989. IIRC Rowland was the second to make... | |
| what pre amp for ATC SCM 40v2 spkrs + 250.5 Pass Labs pwr amp So a transformer-coupled design would be more desirable on this front?Obviously the design of the transformer is paramount, but in a nutshell, yes, if you can get the bandwidth. FWIW the venerable Ampex 351-2 (which is a studio tape machine from t... | |
| what pre amp for ATC SCM 40v2 spkrs + 250.5 Pass Labs pwr amp No. The variable is what is used to couple the output of the preamp to the amp. If a coupling capacitor is used you can expect the output impedance to rise as frequency goes down. There are zero feedback designs that have a ruler flat output imped... | |
| what pre amp for ATC SCM 40v2 spkrs + 250.5 Pass Labs pwr amp Due to the fact that solid state amps tend to have a lower input impedance, many tube preamps will not make the best bass into them, even though as transistors go, the Pass Labs amps are quite moderate.The thing to look at is the output impedance ... | |
| Filter Capacitance How does a person know if they are making a high current, high watt amp, or not?The first thing to understand here is that power, current and voltage have a direct relationship; 1 watt = 1 Amp x 1 Volt That's called the Power formula, and like O... | |
| Short List of Amps I prefer over the Pass Labs XA25 or INT 25 It is! But still audible as brightness. | |
| Short List of Amps I prefer over the Pass Labs XA25 or INT 25 Two class D Cherry amplifiers that i use now (a small integrated Maraschino and a larger Megamaraschino) do reproduce with little distortion, clear and detailed as far as i can see. Class D might be the one way out of this. The issue is somethin... | |
| Advise on Long Phono Cable run You probably know that very long microphone cables are common at performance venues. @bommerbillone The reason this works for microphones and not cartridges is pretty important! Microphones are typically driving an input transformer which is prop... | |
| Recommended Speaker List for Atma-Sphere OTL Amplifiers. Question is will they drive high efficiency horns like the current klipsch heritage line. I’ve currently been trying some modded heresy 3s with the thought to move to the new Heresy 4, Cornwall 4. Or La Scala in the near future. @glennewdickW... | |
| What would you buy Tube amp sound is dominated by the output transformersas for efficiency, so often higher output is just trash - out of phase junk that counts as output.Both statements above are not really accurate. What about OTLs- they have no output transformer... |