atmasphere
Responses from atmasphere
| Class D is just Dandy! For that matter, Bolt can also "compete" against a cheetah.https://www.youtube.com/watch?v=VZuRTNidtCM:-)But I think we all know what the others mean by "compete," whether we agree with them or not.Best regards,-- AlFWIW dept.:@almarg , you might ... | |
| Richard Clark $10,000 Amplifier Challenge - Why Couldn't Anyone Pass this Test?? They need about 15 Watts of the best amplificationThe above quote is taken from the link Erik provided. I've serviced the 15-watt tube amps that Quad made to go with the '57s; in a nutshell driving a 'difficult load' is something they can't/don't... | |
| HH Scott 350 A Tuner Repair He'll probably already know this but he'll need a muliplex generator and a tube tester. Replacement of the filter capacitors is a very good idea.Some of the older mulitplex circuits could make a whine or whistle if they were not properly aligned. ... | |
| Richard Clark $10,000 Amplifier Challenge - Why Couldn't Anyone Pass this Test?? This is a reason why I strive to make my speakers easy to drive. Easy to drive means they will sound great across a variety of amplifiers and electronics. +1Not surprised by your finding as Quad ESL can be an extremely tough load. Differences i... | |
| Amps Atma-Sphere M-60 Mono blocks OTL design We've got a lot of positive comments from customers using audiophile fuses.The location on the amps that makes the most difference is the one by the power cord. That is also the one that is most likely to be blown, as a power tube failure can blow... | |
| Class D is just Dandy! Sorry- I've said as much as I can offer at this point:1) its not a module but our own circuit2) it looks like we have something to contribute in terms of technology.Oh, and it will be balanced of course :) | |
| Class D is just Dandy! Ralph, it appears to me that what underlies much of the disagreement between you and Erik is that he is viewing the impedance of an output coupling capacitor, if present, as contributing to and being part of the component’s output impedance. Wh... | |
| Class D = Trash? 1. Is there a consensus among amp designers that current switching frequencies (what I believe you're calling 'scan frequencies') being too low is the primary cause of 'inharmonic distortion'? If so, is there also a consensus that raising swit... | |
| Class D is just Dandy! I don’t "blame" preamps for changes in frequency response. I say high output impedance causes frequency response changes which vary based on the load. This is an irrefutable fact based on simple serial circuit analysis. Anyone with a basic unde... | |
| Class D is just Dandy! A statement of fact is not an attack. You are taking this personally. Here’s the work:What, exactly, are you claiming is a result of the choice of coupling cap? Distortion or output impedance? Here’s a formula for calculating cutoff frequency:F=1,... | |
| Class D is just Dandy! I'm sure you make fine products, but would you then please explain the variance in all the tube preamps in the Stereophile section if not due to output impedance issues? My prior post was a correction and not an attack. I was merely pointing out... | |
| Amps Atma-Sphere M-60 Mono blocks OTL design So far we've yet to hear about any hum problems with the Sophia or TJ Music tube. Al's report is the first I've seen.We made a circuit change in our amps regarding how our filament circuit is handled about 12 years ago. That really reduced the hum... | |
| Help: Accuphase XLR pin 3 hot into XLR pin 2 hot? (no unbalanced avail) Don't worry about it!! Exactly 1/2 of your recordings are out of polarity anyway so its not going to affect things for the most part. | |
| Class D is just Dandy! The biggest issue with input/output impedance is the change in frequency response. This is especially bad with tube pres as they usually have a high output impedance. Driving a low impedance input amp can affect the overall response and deviate... | |
| Class D = Trash? ^^ one of the artifacts of Class D is is that there can be intermodulations between the scan frequency and the the signal being amplified.You can see this in the specs if the spectrum of distortions is graphed. So there isn't a lack of evidence!In... |