atmasphere
Responses from atmasphere
| Amplifier stability with very low impedance, high efficiency mid/tweeter section??? Could you explain the part about feedback falling off in the audio band as frequency increases? I have no idea what that means. Something to do with negative feedback diminishing and thus THD going up? You stated it correctly here. When the di... | |
| Grounding cable gauge size Thank you and I respect your opinion, but I consider it just your opinion and not actual experience. Its engineering. FWIW I did a survey about this topic a few years ago. What I found was that there were grounding problems in every system wher... | |
| Amplifier stability with very low impedance, high efficiency mid/tweeter section??? But take an ESL, which may be 4 Ohms in the low range and 1/3 of an Ohm at the top. The combination of rising output impedance and dropping speaker impedance cause the amp to no longer give a flat frequency response. You lose treble. @erik_squi... | |
| Half Speed Mastering Isn't Half Speed Mastering a bit over rated and maybe more of a Marketing thing Apparently not. All cutter heads have resonance issues and that is treated with feedback from windings in the cutter head. But it can still be an issue and by cutti... | |
| Happy New Year to Me, from OL to Triplanar @millercarbon The arm tube of the Triplanar has internal damping. While you might be able to reduce resonance further, that can also mess with effective mass. @artemus_5 There is a thread on this forum for tweaks of the Triplanar arm. IMO the onl... | |
| Peeking inside a Carver Crimson 275 Tube Amplifier A little birdie told me that the amps subject of ASR’s testing were, in fact, $600 kit amps--differing in quality from actual units sold with serial numbers. @jbhiller Do you have any evidence to support this claim? I’ve been in the industry f... | |
| Grounding cable gauge size Too bad though because it really is the great unknown as to the level of improvement in sound quality it can provide. Grounding is really important so naturally it can affect sound quality quite a lot. But I was not kidding that if your equipme... | |
| Changing Turntable to Balanced Output Have you measured frequency response and phase accuracy ( across the full frequency range ) in these situations ?? Sure! I've been unable to measure any loss of bandwidth even with 100 foot cables. To be clear though that means only up to 100KH... | |
| Changing Turntable to Balanced Output Do you really believe this. My understanding is that any low signal level cable over 3 metres no matter how whoopdido is going to have high frequency roll off. And what about phase shifts and internal reflections within the cable itself. I find ... | |
| Single Ended vs Balanced Output Gain In my case, I listen vocal Jazz 99%, I want a low voice most of the time as I do not want to disturb kids learning. I want the singer voice outstanding among all sound. Never mind that the recording was made using balanced connections! | |
| SET Shootout China VS The USA @mozartfan That Phillips amplifier is Push-pull. | |
| Single Ended vs Balanced Output Gain Is this typical on pre and amps that have both Single Ended and Balanced Outputs? @post2338 @cleeds It really should not be that way, and this statement A differentially balanced design will yield a 6dB higher output than it will single-en... | |
| Class A into Class AB No. There are also amps that have a sliding class A bias system, where the bias is increased with the signal level. This allows them to idle without much heat. Krell used a system like this. In tubes, you have class A1, class A2 (where grid curre... | |
| Class A into Class AB Every aspect of sound quality was improved by bias increases, especially at low listening levels. I ended up at 3.3x the factory setting with heat buildup being the limiting factor. Hard to believe that a no-cost adjustment could offer such an im... | |
| Changing Turntable to Balanced Output I’m not really sure this true balanced outs because the transformers feed both sidle ended and XLRs. I am relatively new to this. @audiosaurusrex Transformers allow you to run single-ended or balanced simply by grounding one side for single-end... |