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atmasphere

Responses from atmasphere

Tube Amp for Martin Logan Speakers
^^ Ah- good. And we now also see why the Power Paradigm is still around some 60 years after it was supposed to be supplanted by the Voltage Paradigm: and that is because amplifiers operating under the Power Paradigm tend to make less odd ordered h... 
Tube Amp for Martin Logan Speakers
Jandidden, keep in mind this thread is not about transistor amps. But more importantly you have to be careful here not not violate something called Kirchoff's Law.Actually you will find that such is impossible as it is a law of physics, and not pa... 
Tube Amp for Martin Logan Speakers
With a measured damping factor of 4.7 and an output impedance of 1.5ohms it's closer to an 8ohm tap than a 4ohm tap.But all this can change with a bit more global feed back to raise the damping factor and lower the output impedance.George, this ma... 
Proper wiring of 4 8 ohm speakers and amp load..
^^ If you are running 2 pair of speakers off of the amp the result will be 4 ohms total per channel and with a Parasound you should have no worries. You will get more power this way but you will also get more distortion (true of all amplifiers dri... 
Ssssh, is your tube preamp really that quiet?
Why would a volume control (attenuator) after the gain stage affect the level of noise? Wouldn't that be true only of a volume control that is before the gain stage? Or have I somehow got this backwards in my head? I sense that I still have much t... 
Tube Amp for Martin Logan Speakers
Tradeontheweb, the ZERO does not affect the sound quality as you and George suggest.How it actually works is that many tube amps have problems on ML speakers. In such cases, they are not going to work very well. The ZERO solves that, plain and sim... 
Has anyone had trouble with speed on their tt
The OP suggests that there was an actual malfunction that was speed related. I would get some good days and then the temperamental thing would drift or even radically switch speeds ending my listening sessionTwo areas of difficulty here that can c... 
Ssssh, is your tube preamp really that quiet?
It is. Usually line stage noise is negligible unless you have speakers with high efficiency- 96 db or so and you may have to think about it. When loudspeakers get up to 104 or more, quite often the amplifier noise can be an issue too.With most lin... 
Tube Amp for Martin Logan Speakers
^^ Troll Warning. 
Ssssh, is your tube preamp really that quiet?
FWIW the Ref 3 is a line stage. This thread is about phono sections. 
Tube Amp for Martin Logan Speakers
Or ... are you saying the relationship between an amp's output impedance and an ESL's varying impedance plot is simply not a relevant consideration to the ESL's sonic output because of some unique or different electrical characteristic peculiar to... 
Tube Amp for Martin Logan Speakers
So my sense is to consider the full impedance curve, not just a static number. Maybe that is where "all other matters" are not equal. That is certainly part of it! There is a reason some speakers are considered 'difficult loads' and that is never ... 
Tube Amp for Martin Logan Speakers
BTW, as I read it; George didn't call you stupid, he called one of your suggestions stupid, and that was after you called him a "troll", which was after he posted a link where he recommend your product. This line of posting is somewhat out of char... 
Need an audio brainiac...Stumped...
If it were me I would look at the filter caps on the plate supply for the power tubes, even though this otherwise seems to be solved. Motorboating is a classic problem of defective/inadequate power supply filtration. My guess is the amp is right o... 
Ssssh, is your tube preamp really that quiet?
Hello Charles, the same thing happened to me although it was a different solid state preamp that I started with. We can get such good gain numbers with the use of stepup transformers that at normal listening levels, you can't hear the phono noise ...