atmasphere
Responses from atmasphere
| What is meant exactly by the description 'more musical'? What if someone’s ear does not care about the kind of distortion @atmasphere identifies with musicality? Would we say their use of the term "musical" is incorrect? This would be tantamount to saying that "good food is spicy food" and then for any... | |
| New Generation Class D - AGD Audion Mkiii upgrade @agdproduction Your description simply sounds like a good switching device (i.e. GaNFET), combined with good engineering arranged to make an amplifier. I'm very aware of the difference between efficiency and good sound :) | |
| What is meant exactly by the description 'more musical'? I’m going to add to what @mapman has pointed out. Musicality has everything to do with how the amp makes distortion. The main differences we hear between amps, their ’sonic signature’ is in fact their distortion. To be musical, that distortion ha... | |
| Are SET amps "quieter" than push/pull tube amps? Can anyone explain to me why a low powered SET would be more "quiet" and work better with such speakers than an ARC Ref 75 or VAC 200iq (as examples)? @bobbydd Yes. The dealer is incorrect; PP amps are not noisier. But, and this is a big one, t... | |
| New Generation Class D - AGD Audion Mkiii upgrade I'm pretty sure that the GaN FETs that AGD is using are the only ones actually designed from the ground up for audio. @badgerdms GaNFETs are designed as switching devices. To that end, they really can't be designed for audio other than to be s... | |
| Blown Cap???What Else To Replace During Service??? The amp is 20 years old & ran Class A HOT @freediver Electrolytic caps don't like heat so 20 years does make them suspect. | |
| Blown Cap???What Else To Replace During Service??? How old is this amp? If over 20 years, filter caps might be a good idea. If only 10 years, unless poor quality parts were used initially, the caps should still be good. Usually a 'pop' and failure is something other than a capacitor failing... | |
| 300b lovers Which rectifier is better: full wave or bridge? Full wave is preferred if you are planning a bipolar (+ and -) power supply. If only a single pole, a bridge does have the advantage of the power transformer not needing a center tap. That advanta... | |
| Leben CS 600 ( Dumper tube ) Tube rolling That's a 'damper tube' used in color televisions, but its basically a rectifier. Since the Sylvania is a perfectly good tube, I wouldn't worry about it. | |
| Alpha Core Goertz I thought the Zobels were for 10 foot or greater lengths and used with certain tube amplification?. @jacobsdad2000 Probably not. Tube amps are not likely to go into oscillation and blow up as spectacularly as we used to see with solid state amp... | |
| Tube amplifier - tube bias and time to warm up Is matching output tubes necessary if I can adjust bias for each of four tubes ? @inna Yes! Its one thing to set the bias point, which defines the operating point of the tube. But the tube has a dynamic operating curve; ideally each of the tube... | |
| As An Experiment I Stuck A Few Things Under My Pre-Amp And Am Now On A Quest @neonknight Your experience suggests that your preamp is picking up vibration from the shelf on which it sits. The pads you made are providing some isolation. By adding more pads, they were not loaded as much and so vibration was simply being tran... | |
| Alpha Core Goertz Is it possible the Goertz cables already have the Zobel’s installed internally, and I just may be adding a second set? No. But its very possible that a ZOBEL network is inside your amp! | |
| Alpha Core Goertz The issue here is that the Goertz cables have high capacitance. If connected to an amplifier with a poorly designed feedback loop, the result can be an oscillation that can damage the amp (and probably a tweeter) in very short order. This was a mu... | |
| 300b lovers I have a thorough dislike of working with lead-free solder. Nothing flows in a point to point build like a good 2% silver solder. @donsachs That is why its worth it to work out the math. The lead content in your product is a percentage allowa... |