atmasphere
Responses from atmasphere
| CLASS A POWER RATINGS @rost The confusing bit here is that any amplifier that goes to 'AB mode' is a class AB amplifier and is not class A. By definition. If you are conflating a class AB amplifier with a real class A amplifier, I can see why the question. The techno... | |
| New Class D amplifiers How the measurements reflect the sound that we perceive? I described that above. Since the ear uses higher ordered harmonics to sense sound pressure, its keenly sensitive to them since the ear has a +120dB range. If these harmonics are not mas... | |
| Tube amps - what 3 things… If you are planning to use a tube amp, do yourself a favor and avoid low impedance speakers. Your amplifier dollar investment will thank you. Tube amps using output transformers can lose as much as an octave of bass response going from an 8 Ohm l... | |
| New Class D amplifiers In the interest of my own learning, would you please point out which measurements correspond to what people hear? Sure- two measurements that have not got the attention they deserve- first, distortion vs frequency, which ideally should be a str... | |
| What is your experience with amp power? When the builder, who is from Italy, came over to the states, I got to talking to him and I asked him about the output power of my amp. I got such a look of disdain from him; clearly I did not deserve that amp if I concerned myself with such irr... | |
| Comparing Phono Pre-Amps Cartridge loading has to be considered! By loading alone, the same cartridge can sound different with different phono sections, owing to things like input capacitance and high frequency overload margins. So an AB comparison using a switch at the ... | |
| What amps are out there that are Class A, 50 wpc into 8 ohms? Anything over 30-40 watts being sold as Class A is not pure class A, it’s class A biased. This statement is misinformation. If an amplifier is class A biased, its a class A amplifier. The output power has nothing to do with it. The trade off ... | |
| New Class D amplifiers Do I really need to explain the difference between subjective preferences and objective performance again? There should be no difference at all! If you think there is, then you are convinced that we can't make the measurements for everything we... | |
| New Class D amplifiers I simply seeking to clarify the record by asking for any evidence of issues with Hypex or Purifi, which are much cheaper alternative. This bit isn’t accurate. Have you priced them recently? We have. Using those modules would cause our amp to be... | |
| Peachtree GaN 1 Beta The output inductors he’s taking about, is a ferrite on the speaker wire outputs, the speaker wire is coiled around it. Not a coil on the power supply. @donnylovely Yes- that was very clear in his prior post. FWIW, the choke used in a class D i... | |
| Peachtree GaN 1 Beta @atmasphere do you care to comment? I think the removal of an output filter for Class-D will be very measurable. I guess when you don't have to worry about compliance testing, anything is possible. @atmasphere what would happen if you hooked thes... | |
| Small, Effective Subwoofers? Golden Ear makes some smaller powered subs that are quite effective. | |
| New Class D amplifiers I haven’t heard or read of any issues with customer service from the many US and European sellers of class d amps using Hypex or Purifi modules. Do you have actual evidence of poor customer service you can share from any of the main stream amp pr... | |
| New Class D amplifiers Is it really a binary choice? What I am saying is making an amp easy to service and update should be part of it’s design and doesn’t need to be an expensive operation to perform. How hard is it to remove a few screws, unattach a few wires, and sw... | |
| New Class D amplifiers Does anyone actually think anyone will be using the same class d amp in 20-30 years? With the way the technology is still evolving, I find that bordering on pure fantasy. I see no reason why having something that is easily repaired (what can be e... |