kijanki
Responses from kijanki
| Make a trasnformer hum 101 SMPS have bad rap from crude computer applications. Jeff Rowland uses extremely quiet SMPS (cleaner than linear power supplies). Advantage of SMPS is that it can operate from AC and DC (tolerates presence of DC) while many operates from wide vol... | |
| Make a trasnformer hum 101 This brings interesting question - what causes DC on the AC line. Is it uneven phase loading, VFD drives or anything else? | |
| Make a trasnformer hum 101 erik_squires +1 | |
| Make a trasnformer hum 101 Normally a good AC line has a neutral which is essentially at ground potential, and a "hot" which we say is 120 VAC. That is, it has a sinusoidal waveform which repeats at 60 Hz (for America) or 60 times/second. The magnitude of the complete swing... | |
| Bridging Electrocompaniet aw250r Current drive will stay the same, but current demand will be 2x higher (because of 2x voltage). I would not worry about that since this amp can deliver 100 amperes peak. According to specifications your amp can be bridged and can drive 1 ohm speak... | |
| Piano Solo https://www.youtube.com/watch?v=nCK6Feqz7wY | |
| Speaker damage? +1 shadorneIt is very hard to damage speaker, other than by clipping, as shadorne stated. Clipping creates a lot of high frequency energy that can burn out the tweeter. | |
| 15 AMP or 20 AMP Power Conditioner. I have Furman Elite PFi 20. I got 20 amp version since it was on Audiogon sale (1/2 price). It contains electrical noise filtering and non-sacrificial very tight over/under voltage protection, as well as Power Factor Correction. Since most of t... | |
| Speaker cable geometry question Spacing wires apart will obviously reduce wire-to-wire capacitance with some increase of the wire inductance (that is more important IMHO). In addition electrical noise pickup is proportional to the area between wires. It might not seem importa... | |
| Why Single-Ended? Thank you Ralph for explanation about third harmonics. I understand that advantage of the fully balanced configuration is removal of second harmonic to better hear the third one (that you try to lower?). As for the balanced cable - yes it can run ... | |
| Why Single-Ended? The way balanced line eliminates cable artifacts is twofold. First, ground is ignored, so the shield is not part of the sound (nor the is noise to which its exposed; in a single-ended system the shield is part of the signal path).You cannot elim... | |
| Why Single-Ended? Thank you Charles. While not opposing any topology I think less is more. As electrical noise is concerned, home environment is in most cases benign. I argue to learn/understand and I have, especially from Al and Ralph. This forum is great. | |
| Why Single-Ended? This statement is false. A fully differential amplifier does not have twice the parts and is not nearly two amps inside! This is a very popular myth. I don't know your designs, but usually output stage, at least in SS amp has to be doubled, as... | |
| Why Single-Ended? Thanks Al, Third harmonic, that supposed to be euphonic, will be the same in fully balanced or single ended design. Removal of the even harmonics cannot make amplifier sound "warmer". It is achieved by reducing higher order odd harmonics produc... | |
| Why Single-Ended? Converting single ended - balanced - single ended using transformers, makes sense if you have a lot of electrical noise and connection is long. Otherwise transformers won’t add anything positive to sound. They will introduce some low frequency dis... |