atmasphere
Responses from atmasphere
| Bass leaves after amp warms up? Does anyone know if all the amps in question are MOSFET outputs?? | |
| Bass leaves after amp warms up? If the digital was unplugged, seems like we can rule that out as being a problem.Go ahead and restore the system.I realize I made a poor assumption. I would not have turned off the amplifier when messing with speaker cables. Most transistor amps d... | |
| Tubes/SS Power Amps? Orpheus10, amps in general are not supposed to catch fire :), tube or solid state.Sounds like that SS amp was overbiased and went into thermal runaway.The way to do the ventilation is to put one are two vents over the space that the amp/amps will ... | |
| Bass leaves after amp warms up? Mapman, the reason the amps are ruled out is because the bass can come back without shutting the amps off, in fact can come back without the system being messed with. It comes and goes.If the amps were the problem, once they had warmed up the bass... | |
| Tubes/SS Power Amps? Orpheus10, there are inexpensive ways of dealing with heat. You don't need air conditioning for starters, if you do it right.Now if you set up your system according to how much heat it makes, don't expect it to sound like music. If it does, great,... | |
| Bass leaves after amp warms up? Here are the things ruled out:speakersamps (3 amps used, from 60 to 200 watts/channel)hearingelectricalThe only clues are: bass might come back on its own or when messing with speaker cables.This points to another component. What happens if you li... | |
| Can I tweak L-R balance by differntial biasing? Thanks for the comments Swampwalker. FWIW, adjusting the bias not only does not affect gain, it doesn't affect the output power of the amp either. | |
| Listener fatigue: what does it really mean? Charles1dad, to your point the problem we are having with semantics is that distortion often masquerades as dynamics. This is so common with audiophiles that I no longer use the term- I use impact instead, when referring to actual changes in dynam... | |
| Can I tweak L-R balance by differntial biasing? Bias has no effect on gain until the tubes begin to approach cutoff.Reducing the bias will likely increase distortion, assuming that the amplifier design is optimized. So the simple answer is 'no, this will not work.' | |
| Listener fatigue: what does it really mean? Petepappp, people often associate brightness with more detail. They are not the same. Detail is that which tells you more about the music. Brightness can allow you to do that, but at a price of listener fatigue. What works better is when you get m... | |
| Sudden Loud Buzz on my Tube Amp Possibly an intermittent cathode/filament short in one of the 12AU7s. | |
| Bass leaves after amp warms up? The fact that the system seems to work while running only one channel is a powerful clue.The amps themselves are ruled out, as 3 amps have had the same behavior. Also ruled out is hearing and the speakers. The preamp and source/s are still under s... | |
| Listener fatigue: what does it really mean? Csontos, the 2nd harmonic is considered musical to the human ear (contributes to the coloration known as 'warmth' or 'richness'), and is not used as a loudness cue. Its the 5th, 7th and 9th that are, and they are likely to be in slightly higher nu... | |
| Stand out phono stages Lacee, with respect to the volume control, it will work better if it is buffered in some way from the amp or interconnect cable it is driving. For this reason I do not think that having an outboard phono section is a good idea. It works better whe... | |
| What component is responsible for dynamics ? There are two ways the term 'dynamics' is used by audiophiles.In the vast majority of cases, the word 'distortion' can be safely substituted in the conversation without changing its meaning.This is because the human ear uses odd ordered harmonics ... |