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atmasphere

Responses from atmasphere

World's best Pre-amp for $10K and above?
You might engineer a plane but it still has to be test flown. Yes, we do a lot of listening. Human hearing rules are not well accepted in the audio industry (how's that for a conundrum) so test equipment does not tell you everything. 
World's best Pre-amp for $10K and above?
You can tailor the sound through the topology. For example, a purely-single-ended design will exhibit a 2nd order harmonic distortion which will give it a rich sound. If no feedback is used, it will not be harsh until pushed hard, but will feature... 
Ultrasonic Oscillation
One other thing to look at is corrosion on the ground contacts of your RCA connectors. That can toast tweeters too. 
EL34 tube monoblocks that doubles power at 4 ohms
You might want to take a look at this:http://www.atma-sphere.com/Resources/Paradigms_in_Amplifier_Design.php 
World's best Pre-amp for $10K and above?
Solder: use a eutectic type to avoid bad solderjoints- pay attention to the alloys as they have different uses depending on the connection. IOW there is no one best solder for all solderjoints, but this is an engineering issue, not a matter of tas... 
World's best Pre-amp for $10K and above?
The circuit should work the same regardless of the cap. Once it works, then the choice of cap is not for 'voicing', which is a tonality issue, but which one can bring out more detail (which, BTW, it should do in any circuit).IOW, any given cap sho... 
Amp preamp impedance matching...can anyone explain?
Bifwynne, that is a common problem if you are trying to use a balanced preamp with a subwoofer. Many subs only have SE inputs.Another solution is that Jensen transformers makes a transformer that is optimized for subwoofers. It has a fairly high i... 
Ultrasonic Oscillation
Italian, It sounds to me like your amplifier has too little power and you are pushing it too hard. That is why tweeters fail! Its not because of a malfunction.So you either need a more powerful amplifier or more efficient speakers. 
World's best Pre-amp for $10K and above?
You were saying?...You will note that I used the term 'competent', as in: no competent designer will voice a preamp or amp. The reason you hear those differences is often nothing to do with voicing, but rather distortion. Our ears hear distortion ... 
Joule Electra VZN 100 Need help
Desalvo55, the tube sockets in that amp overheat as they were never intended to handle the filament currents that a 6C33 requires. So the filament connections tend to develop bad connections after a while. If the socket is not too far gone the fil... 
Amp preamp impedance matching...can anyone explain?
Al, isn't it the case that ARC does not recommend less than a 30K load with their preamps? I know that is true of at least one of the recent Ref series. 
World's best Pre-amp for $10K and above?
However, all of this products are voiced subjectively to have a different sonic character from one brand to the other.I think we can be quite certain that this is incorrect. I doubt that any of these preamps are 'voiced'. I don't know how things l... 
Need helps with hums, radio station in phono
Hi Andy, now that you know a way to fix it, the next step is to find a way to correct the grounding problems that cause the need to lift AC grounds from the wall.For example what happens if the DAC is unplugged from the wall? Ca you ground everyth... 
R CHANNEL DEAD, CLICKING SOUND INSIDE AMPLIFIER
Just in case, test your preamp by swapping the interconnect cables left for right at the input of the amplifier.If its the preamp the problem will move.If not, there is something that is tripping the speaker protection relay, meaning the amp needs... 
Need helps with hums, radio station in phono
Huh? Not buying that one.