atmasphere

Responses from atmasphere

Recommended SET amp and speakers to 20k
Getting hifi bandwidth out of an SET is challenging when the full power is over about 8 watts or so. Usually the bass is sacrificed so that the output transformer can make it to 20KHz. Often that works, since the speakers that have the sort of eff... 
Time for the Dynaco to go, Affordable Integrated or Separates for Wilson's Under $2.5K?
To refurbish the MkIIIs:Get the filter caps replaced. Replace the bias rectifier. Check the resistors- replace any out of spec. Check the tubes and replace as needed. if you want, get some good coupling caps- stay away from paper and oil caps  as ... 
High Output Preamp for First Watt SIT-3?
@murphbass  **All** amps make lower distortion into higher impedances. You can see this in their specs. You might think the difference to be 'negligible' but the distortion components involved are higher ordered harmonics. Since the ear uses these... 
Is there such a thing as too much power?
Ya, there's a reason Nelson calls his stuff "First Watt". It applies to both tubes and transistors. 
High Output Preamp for First Watt SIT-3?
I think I'll listen to the sentiment of most of the contributors to this thread and build around the better of the two variables: my amp. I like the idea of having a high efficiency speaker on hand when I add an SET amp. Since it's hard to de... 
Is there such a thing as too much power?
I can think of plenty of reasons why a 70 watt amp can sound better than a 300 watt amp. This should come as no surprise whatsoever! 
Discussion of Class D Amps Application & Experiences
Because of their high frq noise, Class D amps can be a problem for tweeters with wide band frequency response and high frequency break up. Excess energy (not music related) can cause the breakup to induce distortion. This statement is entirely ... 
Better amp or better tubes?
all tubes have been purchased with the last 2 years with moderate use. I think they should be fine@emil  The age of the tubes and how much use they've had has nothing to do with whether they are good or not. I've bought plenty of bad tubes that we... 
Time for the Dynaco to go, Affordable Integrated or Separates for Wilson's Under $2.5K?
Was thinking not to modify them and maybe just do the power supply filter capacitors (where are they?) because they are "survivors" I just dig the period-correct look and the perfect minor patina. Can I replace some bits to improve the sound and k... 
Seriously considering tube preamp…opinions?
So, IMO, the most musical and human sound is from a single ended triode amp or preamp (SET). Think the SET is the oldest still used audio amp circuit. Used in the first Bell telephone systems (WE). Funny, SS wants to sound more like tubes and m... 
Better amp or better tubes?
I would test the tubes to see what condition they are in. Its not surprising to find that a good quality 300b has lasted 25 years; they lasted over 50 years in the intercontinental telephone trunk lines which went from the US to Europe under the s... 
More Power or use subwoofer to boost bass for music
Have you actually tried sufficiently large traps in sufficient quantity to make an audible difference? I see guys using hopelessly small bits of foam or similar that at beat could only trap dust.@lemonhaze  Certainly! Bass traps saved the day in... 
Time for the Dynaco to go, Affordable Integrated or Separates for Wilson's Under $2.5K?
Do the amps not have enough power?Did you get them refurbished? On another thread you asked if you should be concerned about their age and the answer is yes.MkIIIs can work quite well if in good condition! But if they've not been refurbished (new ... 
More Power or use subwoofer to boost bass for music
Or, as my experience and measurements have shown, you treat the room with some decent bass traps and wall coverings to ensure the treble/bass balance is correct but no.... that's too much ....??? @erik_squires I used to think that way too. Then ... 
Discussion of Class D Amps Application & Experiences
So, based on your response would you say this a 10% improvement? 20%?Hard to say in that regard! If properly engineered, its probably not that big a deal, as MOSFETs have gotten faster in the last few years since the GaNFETs were introduced. @ario...