atmasphere
Responses from atmasphere
| How does the input impedance of an amplifier effect it sonically? @hiendmmoe If the manufacturer can't provide that 20Hz output impedance value, you probably should look elsewhere! The 20Hz value can be a multiple of the 1KHz value; it could easily be 10x the value at 20Hz. We got around this issue with our pre... | |
| Thoughts on Tube vs SS amplification for Sony SS AR1s In a follow up post I specifically mentioned amplifiers capable of doubling their power as the speaker impedance is halved. This would demonstrate high current output/delivery from the amplifier. This is what some have said the Sony speaker re... | |
| Nixie tube amplifier project - unfinished - help! I wonder if he was using a Nu-Tube from Korg? That tube is based on VDF concepts. IIRC Nelson Pass makes a kit preamp using that tube. At any rate this does not sound like it would be all that challenging to sort out. | |
| 2 different Bedini 150/150 Mk II Amps You have to be careful here- when the amp is one taking any readings in it can end in disaster if a probe slips! These instructions make perfect sense to a qualified technician- which is where you should take it! | |
| How does the input impedance of an amplifier effect it sonically? That depends on what is meant by 'struggling' as there can be several issues. One is that the amp needs a lot of input voltage and this has nothing to do with the input impedance. The other is that if the preamp has an output coupling capacitor, i... | |
| 2 different Bedini 150/150 Mk II Amps Sounds like it to me. | |
| Thoughts on Tube vs SS amplification for Sony SS AR1s My point is if you look at the Sony SS AR1 speaker measurements they are as George and others have rightly noted, a ’challenging ’ speaker load given its impedance curve and phase angle characteristics. Armed with this knowledge the last thing ... | |
| Thoughts on Tube vs SS amplification for Sony SS AR1s One has to ponder that there are things listeners can clearly hear that (At least for now) aren’t being measured or maybe can’t be measured. In this case I don't think so. The Luxman is able to behave as a proper voltage source within certain li... | |
| How does the input impedance of an amplifier effect it sonically? The simplified answer is that the resistor which sets the input impedance is usually sized the same value as the global negative feedback resistor in order to minimize DC offset from a gain mismatch between the two differential input transistors. ... | |
| Nixie tube amplifier project - unfinished - help! @kjmelvinNixie tubes do not amplify. They display numbers and are the old school version of what was around before LEDs were used to display numbers (like in old digital alarm clocks). So a nixie tube amplifier doesn't seem to be a thing- could it... | |
| 70’s rock pressings. Witch equipment deserve? Finally, you should tell us what is your favorite new MM cartridges and how many of those greatest vintage MM did you try and actually compared to the modern MM ? Also it would be nice to know which modern MM you could compare to some of your n... | |
| How to accurately gauge speaker sensitivity to match with tube amp? Matching the power amplifier to the loudspeaker is usually a function of driver size, efficiency and budget. Efficiency is not the only determinant – even though they may be very efficient, many speakers with large drivers need tremendous amounts ... | |
| Thoughts on Tube vs SS amplification for Sony SS AR1s I am really surprised/stumped as to the results, as I had high expectations for the Accuphase and the SS AR1s. This Accuphase amp is highly regarded and in all the literature I read I would never have expected this outcome, but that's what my e... | |
| Does high end system with dedicated circuits need grounding products The better the grounding schemes of the individual components in your system (and assuming your house wiring is to code), the more you will find that such grounding boxes have less effect if any at all. A properly grounded bit of audio electronics... | |
| Preamp to match Rogue Audio Stereo 100 Power Amp? One element I don't want the Rogue amp to lose it its fleetness. My lack of technical acumen comes in at this point, for I'm thinking that a solid state preamp might serve that end better than a tube preamp. If I'm wrong, I surely don't have an... |