atmasphere
Responses from atmasphere
| Looking for high power warming sounding tube amps Id love something like that although im skeptical an SS amp can bring the tube magic the way real tubes can. I know of at least one such amp. | |
| Looking for high power warming sounding tube amps @smodtactical Does the amp have to be tubes if it has the same good character as a good tube amplifier? | |
| Ground Control to Major Tom... Something very odd to add, the coaxial cable from my CD transport to my integrated amplifier (input 1) produces noise through the stage. @larseand Which 'stage'? the phono section?? | |
| Mystery Of Red Plating Wish I could find a tech like that in Australia Maybe I should ask the guitar shops… @johnread57 Guitar amps can red plate too and some of them use KT88s with some rather high voltages. Any tech that can fix them should be able to fix any ot... | |
| 300b lovers Most people think a 300b is a fuzzy rolled off tube. That is because they heard it in a single ended amp with a mediocre power supply, and most likely an inadequate driver section, and possibly mediocre output transformers. @donsachs I made th... | |
| Fritz Speakers @j_andrews Keeping the crossover of the sub as low as possible makes it easier to integrate. If its got output above 80Hz it can draw attention to itself. At 80Hz the waveform is 14 feet long. So below that point, bass is entirely ambient in the r... | |
| Variac noise @ccogopher A stepdown transformer will be more expensive. Bucking transformers are fairly cheap, since the transformer does not have to be nearly so large. For example, the Marantz 8 draws 190 Watts. It runs on 100V if the newer Japanese version.... | |
| Good Suggestions for Tube Amps under 6k @gregjacob Does it have to be tube if it sounds just as smooth and detailed as a good tube amplifier?? | |
| What would cause noise (ground noise?) when touching the volume control and tone controls? So I tried a few more things but I'm still getting the buzz/hum. @tubeguy76 If you did so without talking to the manufacturer then you were wasting your time. This is a problem that has a very specific cause and I suspect that manufacturer, ... | |
| Mystery Of Red Plating The most common cause is the tube itself fails. Sometimes the socket fails with the tube. If high voltages (+500V) are involved, sometimes the socket can develop internal arcing. This is why ceramic sockets are used in higher power situations, as... | |
| 300b lovers The prototype preamp is essentially a circuit that was a thought experiment of Lynn’s for a fully balanced design that has been around for years and no one ever really tried to build and perfect it. @donsachs I'm curious what is meant by this.... | |
| Variac noise @ccogopher Again, variacs are not meant to be quiet. Your friend is lucky. You could try a DC blocker on the AC line; clearly you're not interested in the method I outlined earlier, although it would solve the problem as well. | |
| The 300B World If it were power, it would be hard to explain why I like the 45 tube (and it is not just me). @larryi As I explained earlier, the big challenge of SET OPT design is bandwidth. Its pretty easy to get bandwidth using a 45! Wider bandwidth mean... | |
| The 300B World I find that there are differences in the sound of 300b, 2a3 and 45 tubes based on hearing many different amps employing these tubes. @larryi I think you'll find that the differences you hear have more to do with who designed and built the ou... | |
| Variac noise @ccogopher Variacs usually make some noise. There is an alternative way to get the right voltage. You could use a small transformer that puts out 15-20Volts and use it to buck your line voltage down to 100V (or alternatively, from 100V to 120V). ... |