atmasphere

Responses from atmasphere

Tube amps and speaker ohms
Hi Gregm, you might ask Nelson Pass or Charlie Hanson of Ayre, both of whom make zero feedback designs. FWIW, negative feedback is a *destabilizing* feature in amplifier design, not a stabilizing one. This is a common misconception about feedback.... 
Can tube amps give true high end bass?
Audiobb, I play heavy metal too and I also have a few friends in the heavy metal world and I opened for Therion when they toured here a couple of years ago. The start and stop of a Kick drum is *way* too slow for any sort of stop and start that mi... 
Reliability on Tubes Amplifiers and Prevention
In hand wired amps (which do indeed last longer, especially in tropical environments) the wiring is not soldered to the tubes. Just thought I ought to clear that up.In a hand wired amp, the tube socket pins can move more freely, allowing the tube ... 
Hum from Atma-Sphere MP-1 Power Supply?
It could also be the power supply cover. We've seen some of the covers resonate on older MP-1s that have had power supply updates without the transformer being updated. It does not mean that the transformer is bad, but it can cause the cover to vi... 
Tube amps and speaker ohms
Normally the tube is a self harmonic generator ( that does not exist on the original signal/recorded signal )Raul, I would have thought you would have educated yourself better before making such an obviously false statement! You are in a lot more ... 
Can tube amps give true high end bass?
Damping factor does not play much of a role in the sound of a speaker, previous posts notwithstanding! In fact damping factor is really a spec that gets touted a lot, but would seem to be mythological in its effects.Damping factor is a means of ex... 
Tube amps and speaker ohms
The point of the topic was to ask the GENERALIZED question that tube amps prefer 8 ohm speakers(though even 8 ohm speakers can dip to 4 ohms on huge orchestral challenges).The answer to that is 'yes!', regardless of the tube amplifier technology. ... 
question about switching, Class D, and Class A
David, class A is the purest form of amplification, be it tube or transistor, known to man. All other forms are compromises that have nothing to do with sound quality, and everything to do with heat.If you choose your system based on the heat it m... 
Dali MegaLine overviews from owners ?
Kurt_tank, Albert certainly has a lot of power but even he will tell you that he doesn't use it. We suspect that his amps rarely make it out of class A. On the 750s that's not a lot of power.As to 'thunderous bass' I am quoting one of my customers... 
Is my amp "High Current"?
Nsgarch, you could have used a better example than an ESL. How about a B&W? ESLs are neither looking for current or voltage- they are expecting constant Power. That is why tube amps generally sound better on them too, so long as they are able ... 
MC TRANSFORMERS VS TUBE PRE PRE
I have yet to hear a transformer that can do what a proper tube phono stage that is capable of MC operation can do on its own. The transformers rob detail, bandwidth and are less interesting to listen to. 
The passing of Marianne Barber of Joule Electra
Jud and Marianne always treated me like- well, I felt like a family? that I never had, even though we have only met a few times. My condolences as well. 
Tube amps and speaker ohms
Hi Pauly, here's what's up with four ohms: Yes, you can use the 4 ohm tap, but at a price. On most output transformers that have a 4 ohm tap, measuring the response of the amplifier on that tap as opposed to the other taps will reveal slightly low... 
Reference level playback
Acoustat6, Having made a few recordings, I respectfully disagree. Usually an LP, and CDs as well, are recorded to take advantage of their dynamic range, resolution and noise characteristics. It turns out that in both cases it is advantageous to re... 
What Makes a Good RIAA or Line Stage?
It is really helpful to work with live recording sessions and master tapes, especially if they find their way to LP! I've done a lot of recording and after a while you get used to the way your mics 'hear' and place them where they will get the eff...