apogeum
Responses from apogeum
| Digital gain vs analog gain @hilde45 Yup, that's the reality. One could almost say that the quality degradation of the audio signal from recording to reproduction at home is equal to the ignored information about the causes for this degradation. Something could be done be... | |
| Digital gain vs analog gain @ieales : Just because you don't understand something doesn't make it automatically "utter nonsense". Please! Maybe the following article can shed more light on the topic although it doesn't explain everything that could be discussed here.🙂There... | |
| Digital gain vs analog gain I need to be more precise: Using digital volume control will reduce the original resolution of the audio file but it will only become clearly audible at some point (A/B comparison) compared to analog control. Those settings are -10dB and -20dB. | |
| Digital gain vs analog gain Digital volume control reduces resolution of the signal and is therefor depending on the original resolution of the audio file. With 24 bit you could decrease the digital gain more than with a 16bit file before you will lose resolution. As a rou... | |
| Power conditioner vs use of a audio grade outlet? Clean power is important (dedicated power line, HQ outlet, no artifacts)but only part of the whole story. The biggest problem in every power supply is still the overall quality of the psu because it will define the sound of the amp/DAC etc. Take a... | |
| Vacuum Tube Break-in The break-in period for tubes is real. At least 20hrs. but for true sonic improvement even more like 50 hrs or so depending on brand and tube. If the tubes are new and not burnt-in before testing/matching them they will lose their closely matched... | |
| Bi-amped system KT88 and 6550 are pin compatible. EL 34 can only be used if the sockets are wired for triode mode operation(grid 3 to cathode, pin 1 not connected as with KT88/6550). I use the EL 34 for driving a Lowther in an OB (400-20kHz). The same amp sounds... | |
| Advice on Repairs for Audio Research VT100 Mk II According to the schematics the VT 100 MKII is a fully balanced design. The offset between pos and neg branch needs to be set to 0 and that's taken care of by some ss circuits between the 6922 (some adj. can be made with RV1/RV2 trim pots). The 6... | |
| Klipsch Speakers Try Nordost speaker cables. Even better, replace the passive with an active x-over and use Nordost cables.. It will change everything. My personal experience with KHorns is limited to the La Scala but from forum exchanges I know that Klipsch sp... | |
| Another dedicated circuit question The article form E. Juaneda which I posted earlier really explains the problem of possible ground loops. Anyone who is interested to understand causes and how to fix it will find the answers there. 'The current will take any path that is provided... | |
| Another dedicated circuit question Different potentials always try to equalize to the same potential thus there will be current flowing between the two (or more). It will always use the path of least resistance. Because parasitic current is not only a single frequency like 50/60... | |
| Another dedicated circuit question This article gives a good explanation of the problem why there is ground current: Because of the way a power transformer is constructed the parasitic capacitors have different values and because the neutral power line is connected to the sa... | |
| Another dedicated circuit question What about the ground loops with 3 dedicated power lines to the breaker box? Even if you have correct grounding in your gear, which is not always the case, you can still get problems with ground loops if the connection of the ground of each unit... | |
| RCA Splitter to convert a single RCA output into two Input impedance should be at least 10 times higher than the output impedance. It's half of what the original specs in the manual say with a y-splitter and gets less the more you connect in parallel. Y-splitter normally is safe. You would need an ... | |
| Single Ended DAC vs Dual Differential XLR DAC A couple of years ago there was a long and heated discussion in DIYaudio about this topic (maybe it's still going on). Generally speaking higher SNR means in the digital domain more bits which would translate into more resolution. The position fr... |