atmasphere
Responses from atmasphere
| Adjusting tube bias... @krelldreamsA set of bias test points so you can plug in a more accurate meter might be a simple solution. | |
| Time to buy a class D amp? Have you made a decision yet on whether you’ll be offering free limited in-home trial periods for auditioning?We're not nearly that far along!With regards to GaN performance, they can be variable depending on who made them and their intended appli... | |
| Reference Full Function Tube Preamplifier So two box units are off the table?A good number of the best preamps out there run an outboard power supply. | |
| Watts and power Most tube amps don't have "guts" in the bass due to low damping factor. You may prefer that or you may not and that will be room / speaker dependent. Bandwidth also plays a role, as well as the match between the amp and speaker. You can have an ... | |
| Cartridge loading I have no doubt that an unstable phono will have problems with spurious HF info but I do not see the cartridge ever generating anything in the megahertz realm to excite this. I do not see anyone debating that a loaded MC cartridge will stiffen i... | |
| Which belt-driven table to play Rock vinyl? We make a great belt drive turntable, the Atma-Sphere 208, but I'll be the first to tell you that the Technics SL1200G is a better machine. It comes with its own arm which is pretty good but it totally justifies any top end tonearm. I like to use ... | |
| Cartridge loading I for one would love to see documentation of the ability of a cartridge to generate a 1MHz signal to excite this resonance.Quite simply it does not need to! Audio energy can cause the excitation. A resonant circuit can be driven into excitation wi... | |
| Cartridge loading What I am interested in is the underlying explanation why a cartridge doing more work will necessarily have this "limited ability to trace higher frequencies"It will be stiffer, less compliant. | |
| Phonostage/preamp recommendations. Parasound JC3 Jr.? 2. The MC section of the pre amp has 50db gain or 60db. I'm having trouble finding a balance. Recommendation from dynavector is 50db with 1000h ohmz load. So that's where I started. It seemed fine. And playing with the knob up or down didn't im... | |
| Installed bulk foil resistors in phono amp It won’t attenuate the signal at all. Its not a matter of input resistance as it is input capacitance. This is also known as ’Miller effect’. The input stopping resistor does two things- it attenuates RFI by acting as a simple high frequency filte... | |
| Does it pay to upgrade tubes in power supply of preamp?? I would expect the 6V6 and 6SL7 to have more effect.The 6V6 is the pass regulator tube. The 6SL7 is the voltage feedback tube and controls the 6V6. So you can see that both would have a greater effect than the rectifier, which is upstream from bot... | |
| Cartridge loading Ralph, how does cartridge impedance affect all of this? I assume on a good phono amp not at all. If a higher load increases the motor's stiffness why wouldn't a cartridge track better at lower loads?When one **increases** the load, the actual lo... | |
| Phonostage/preamp recommendations. Parasound JC3 Jr.? Example I may or may not want an MM cart in the future or a different MC and I would want to buy something now that can accommodate a fairly large variety of options vs something that’s more specific to one type of setup. Buy once cry once if ... | |
| Installed bulk foil resistors in phono amp Yes, I've heard good things about that tube.A 10K grid stop resistor will give you considerably more RFI protection. | |
| Cartridge loading I run my Benz Wood SL "unloaded" at 47K on my Pass XP15. It sounds the most open, with airier highs, but admittedly I'd be hard pressed to tell the difference between 47K and 1000 ohms, maybe even 500 ohms. Seems the Pass XP15 just isn't that... |