atmasphere
Responses from atmasphere
| I'm new to Step Up Transformers There is no better or worse here. It’s what works out in your system @lowtubes Actually if you get the loading right you'll find there is 'better' and that the differences between your various SUTs is less than you thought. | |
| Marantz model 8 @ccogopher +1 | |
| Marantz model 8 @ccogopher Make that service sooner rather than later. You really don't want to find out what happens when the power transformer burns up. This is something that can happen to any amplifier that old with original filter capacitors in the power sup... | |
| Need a modern Class A monoblock, preferably half or compact chassis @decooney Isn't it more about the sound rather than the class of operation? | |
| Your journey with lower-watt tube amps -- Can a kit be good enough? One thing which seems to hang on this answer is when and whether the general audiophile precept that "simpler is better" is true. @hilde45 I think it was Einstein who pointed out that a thing can be too simple to do its job well. I prefer sim... | |
| Your journey with lower-watt tube amps -- Can a kit be good enough? explain in a bit more detailed manner [my own ignorance] how "feedback" sort of identifies, isolates, and/or removes these other things that are "not" the signal. @decooney The various influences described above (resistors, caps, transformers, ... | |
| Your journey with lower-watt tube amps -- Can a kit be good enough? Power supplies of all vintage tube amplifiers from 50-60x look so miserable with such small capacitors. It is especially true for stereo amplifiers when PS is used for both channels in parallel without any separation. I can say for sure such a ... | |
| Phono Cartridge IMD Measurements, Observations and a Question Why can't I see any changes in the IMD? Am I measuring the wrong thing? @kevemaher That's a pretty good bet. By placing the Shelter on an outboard pod you put it at a disadvantage. Any vibration that might be affecting the platter will not be ... | |
| I'm new to Step Up Transformers The Zesto Andros has the Nobel network included in their circuit, along with loading options designed specifically for that transformer/zobel. A Zobel network is often used to damp a transformer. But if you change the source impedance, the Zobe... | |
| Marantz model 8 @ccogopher It would be a very good idea to replace those capacitors to which you are referring! If they are original there's no way they are good. They could easily damage the power transformer if this amp is pressed into service without these par... | |
| Question about high current amps versus "not high current amps" simplest test of amp current handling adequacy is to tap low frequency. driver membrane and checking voltage waveform at speaker terminals with the scope.. if voltage amplitude p-p observed is more than 10mV, then need to check speaker connectors... | |
| Your journey with lower-watt tube amps -- Can a kit be good enough? Yes this Marantz 8B sounded more clear then McIntosh MC30. But despite Marantz bass wasn’t bad, MC30 bass was on the other league. It was also a big difference in complex music reproduction. 8B was good on very simple music but the sound became m... | |
| I'm new to Step Up Transformers @rmcfee SUTs require proper care and feeding if you want the best out of them. Transformers transform impedance. So the output impedance is a function of the turns ratio and the source impedance (the cartridge and cables). If the SUT is insuffic... | |
| Your journey with lower-watt tube amps -- Can a kit be good enough? Didn't have any particular issue with the amp, just blah, lack of transparency, resolution. This compared to two 845 SET amps I was running in that time frame. @sns The Merlins are not a good match for any SET unless you are using them in a sm... | |
| Your journey with lower-watt tube amps -- Can a kit be good enough? @decooney , @hilde45 , One weakness of that amp is seen in the schematic. The 4 power tubes share a single resistor (bypassed by a capacitor) to set up the bias of the output tubes. There really should be a resistor and cap for each output tube p... |