atmasphere
Responses from atmasphere
| Tri-Planar Vll "SE Upgrade" Raul, do you know what a security clearance is?In a case like this it means that the person or company with the clearance cannot divulge information by law. | |
| Do electrolytic caps need burn in? Electrolytics don't have a burn in time so much as they 'form up'. That can take a while, until formed the cap will be less efficient. Give it some time. | |
| MAC Autoformers? The thing that concerns me about 6AS7s, it that they emit cathode sparks in my Tektronix 530 curver tracer at zero grid.That is consistant with your statement of cathode coating failure as it appears the sparks are bits of cathode coating. They... | |
| Autoformers, The Benefits in matching amp to speaker A friend of mine had powered Acoustats; he got frustrated with them and handed the amps off to me wherein I renovated it and installed a tube input stage. It worked pretty well- the original opamp circuit just didn't seem up to the task. Very nice... | |
| The Truth about Modern Class D As it stands now the switching frequency noise output filter, has phase shift effects that reach right down to 5khz, that doubled for the worse at 10khz and doubled worse again 20khz. That's what many listeners find objectionable, in the upper ... | |
| MAC Autoformers? I know of no tube amp designer who uses SPICE. can you name a few?Nope. Maybe one? I know I don't! Victor Khomenko was trying to model our MA-1 in Spice many years ago before he became part of BAT. He called me up saying that the amp didn't run i... | |
| The Truth about Modern Class D The problem is not dead time, or notch distortion. The problem is audibility and connecting that to any particular technical choice. Dead Time has nothing to do with notch distortion, but the chance exists that I mistook the gist of your comment.... | |
| The Truth about Modern Class D By definition, zero deadtime means that the devices must be both on and off at the same time, a physical impossibility given any reasonable technology.:) that is why we have a patent filed. Difficult takes a while- impossible is just a bit longer.... | |
| I need your help. I have an ARC Ref 3, ARC 110, Vandersteen 5As, but no turntable. Regarding the phono section:A good phono section will reduce the number of ticks and pops you hear without curtailing bandwidth.An excellent turntable to consider is the Technics SL1200G. IMO its weakness is its arm, but its arm is competitive wit... | |
| Tri-Planar Vll "SE Upgrade" I have the feeling that when raul is talking about 'lies' he is talking about me; just for the record nothing I've posted on this or other threads about tone arm or LP performance is untrue. Generally, if I don't know the answer I stay silent. If ... | |
| The Truth about Modern Class D “The TDAI-2170 is 100% digital, without sound-deteriorating digital-to-analog conversions. The digital signal drives the speakers directly, with no translation and no middleman.” It takes a digital signal and amplifies it without a conventional... | |
| Autoformers, The Benefits in matching amp to speaker "An Autoformer or any transformer cannot fix a difficult load and only affects stability in a poorly designed, on the edge amplifier." @georgehifi That quote is taken out of context but despite that it still appears to be that you have missed the... | |
| MAC Autoformers? If Ralph (Atmasphere) picks this post up, ... what is the tube life is in your amps. Btw Ralph, …. Roger mentioned a couple of times that negative feedback, *if used properly*, is not all that bad a design feature. Not taking a position, just... | |
| The Truth about Modern Class D Cyrill Hammer (Souloution)"if you want to have your product performing at the cutting edge it is not possible with today’s known switching technologies. In order to come close to the performance of the best linear design we would need high-... | |
| Autoformers, The Benefits in matching amp to speaker So why did you stop making the Autoformers?Paul Speltz came out with the ZEROs. I think our device was better in some ways- it was EI core rather than toroid, and it had 1 ohm taps! But the ZERO proved easier to explain and since that wasn't our m... |