atmasphere
Responses from atmasphere
| Anyone recommend a neutral tube amp? The reason tubes are accused of being 'warm' is that they more closely follow the rules of human hearing than do transistors. If neutrality is your goal, and on top of that listenability, due to the constraints of the technology tubes are the only... | |
| Question, why do some amps double power from... There is little correlation between 'doubling power' and the rules that human ear uses. There is however a design rule that takes advantage of the concept, and there is another design rule that says that what is really important is making an ampli... | |
| A 9 watts beats Passlabs, EAR and YBA ? Its all about the rules of human hearing. Negative feedback generates distortion that the human ear is very sensitive to: odd ordered harmonics. They cannot be eliminated unless you also get rid of negative feedback! So amps that are zero feedback... | |
| Built-in phono stages One of the poorly understood issues with preamps is that they must control the interconnect cable. The technology to do that, to obviate the effects of the interconnect cable, was developed nearly 60 years ago, but it rarely gets used in the home ... | |
| The Anatomy of the Acapella Violon - shocking find Amfibius, 5 meters is still *really* long. Many 4 ohm speakers will simply not allow lengths like that- Magnaplanar (otherwise a fairly easy load) is a good example- with them its beneficial to turn the amps around backwards and run 6-inch speaker... | |
| The Anatomy of the Acapella Violon - shocking find Amfibus, you have 10 meter speaker cables??! OK- in order to get the most out of the speakers, you will want to shorten those up- over 5 feet and most speaker cables chomp into the impact and definition in a big way! If I had known that earlier, I... | |
| Strain Gauge Preamp/ Phono. A new standard? So no EQ unit then. If you refer to Stanley Lipshitz's paper, presented to the AES back in the late 70's (arguably the definitive paper on RIAA equalization), it is possible to design an EQ network that will follow the mandated curve correctly, ea... | |
| Amp Designs That Are Able To Drive 4/2 Ohms Load Ryder, take a look athttp://www.atma-sphere.com/papers/paradigm_paper2.htmlIn a nutshell, 'Doubling power' as the impedance is cut in half says nothing about how the amp sounds, in fact there is nothing in the rules of human hearing to suggest tha... | |
| Guitar Hero or Rock Band: Admit You Play? Shadorne, the other guys in the band have played on a lot of LPs and done lots of tours- enough where they won't be tempted out unless they get some good paying gigs. So no- not yet, but it could happen. Touring with a Mellotron... I could be aski... | |
| The Anatomy of the Acapella Violon - shocking find Rlawry, The speaker you have has only a single woofer and is an 8 ohm load. The way an amplifier handles that is quite different from how it reacts when the woofer load is 4 and the rest of the speaker is 8, especially if the amp is question is a ... | |
| Strain Gauge Preamp/ Phono. A new standard? Hi Peter, the RIAA curve is flat from 318 uS to 3180uS. So there are about 4 octaves that will be spectrally incorrect. That is a lot bigger error than any room I've tested. BTW I've run plenty of room curves over the years- especially at shows. I... | |
| Amp Designs That Are Able To Drive 4/2 Ohms Load One thing that came out at the recent CES is that there really is no longer any argument for low impedance speakers anyway. It turns out that transistor amplifiers, while easily able to *drive* a low impedance speaker like 4 or 2 ohms, actually so... | |
| Strain Gauge Preamp/ Phono. A new standard? All the Strain-gauge cartridges from the old days had the RIAA EQ built-in too. | |
| Aesthetix Callisto and Io Eclipse Hi Albert, did you buy that preamp then? Sounds like you just got it. | |
| For people with experience with Class-A amps Elevick and John, many Krell amplifiers have a patented (although not patented by them) sliding class A system that cuts back on the idle current at low volume levels. As the signal increases, the bias current is increased with it. |