atmasphere
Responses from atmasphere
| Differential Balanced Sound Quality A related question that has been bothering me. If your circuit isn't perfectly duplicated after signal splitting, doesn't this introduce timing errors upon recombination? @cal3713 No, at least not at audio frequencies and beyond. Timing become... | |
| Differential Balanced Sound Quality There is a reason: In most consumer (and professional) amplifiers the balanced signal is dealt with at the input by a differential amplifier necessitating the need for a series resistor on the inverting input. In the worst case the diff amp is the... | |
| My really dumb tube mistake(s) The process is ongoing. The new tubes have about 75 hours thus far.I’m hoping for the revelation to reveal itself soon.@tvad If you're already at 75 hours, you're hearing it. Have you replaced the input tubes? They can have more effect than the ou... | |
| Help with noise in ONE speaker Have you swapped the interconnect cables left for right at the input to the amp? Try that; if the problem does not move then the amp is at fault.If the problem *moves* then the preamp is at fault (the noise is unaffected by the volume control, so ... | |
| Differential Balanced Sound Quality Alternatively, the balanced equipment discussed above separately amplifies the positive and negative parts of the electrical signal. This requires double the circuitry because you have to amplify two signals (0-to-positive and 0-to-negative) i... | |
| Class D And Ralph search is your friend, you might want to be reminded, that you were anti GaN fets way back at first, they are still the same ones buddy. You are quite correct. When you first commented that GaNFETs didn't need a heatsink in an evaluati... | |
| Differential Balanced Sound Quality The bit that a lot of people are unaware of is that balanced inputs are actually noisier than single ended (RCAs etc.) in that they utilise relatively high value resistors that introduce their own (johnson) noise into the signal.This statement is ... | |
| Strange buzz issue! @jea48 is correct. When this amp was built it had an ungrounded power cord. Someone replaced it and now the amp is grounded to the building electrical ground (per EU Directives). The trick is to have the audio ground of either the amp or preamp be... | |
| Bass is clearer and more impactful when I stand vs. when I sit Null, node; these phenomena are caused by standing waves in the room. A standing wave in this case is where a bass note is so long that it is able to reflect off of the wall behind you and cancel itself.No matter what anyone says this cannot be cu... | |
| Economical full-range floor-standing speaker options? You might consider getting a set of Swarm subwoofers (audiokinesis.com). These are compact and will take care of everything below about 60-70Hz down to 20Hz, with evenly distributed bass throughout the room.Once you have that sorted (bass is the h... | |
| tube magic with digital source? Ralph, if my Burson sounds better than that Chinese whatever you will pay for both, agreed ? If not, I will pay for both.:) nah. I just mentioned it to point out how digital, after only 40 years, is finally getting to the point where it should hav... | |
| Amp making noise on shut off I've seen solid state amps do this too. This is a bit more concerning than it is in a tube amplifier; it may mean that an active device is failing. If this is the case I think you'll find that it gets noisier to the point that you hear it when the... | |
| what are some of best tonearms you own or experience with. The references I use are LPs that I recorded. I have the master tapes and know what they sound like. I've used a number of arms at home and at shows; the one that consistently gets everything right is the Triplanar.It has the hardest metal bearing... | |
| Class D The other problem is current delivery into very low impedance speakers, like the classic linear high end amps can, that could take some more time, but they can drive the speakers that aren’t such a savage/nasty load like Wilson Alexia etc, so it’s... | |
| Amp making noise on shut off Meaning: nothing to worry about. Some tubes will do this and its not an indication of failure or sound quality. |