georgehifi
Responses from georgehifi
| Lightspeed Attenuator - Best Preamp Ever? Hi Gooddomino, what is the model number of your Rega Dac. Cheers George | |
| Not ENOUGH GAIN The Transcendent grounded grid preamp uses 12au7's (gain of 20) at all stages, one of the lowest gain tubes in the 12??7 range. You could change the input tube first for a 12at7 ( gain of 60)and see how you go. These 12at7's are interchangable wit... | |
| Lightspeed Attenuator - Best Preamp Ever? Just in case some are wondering, Tristone (Lei) ordered a dual mono unit, these seem to be gaining popularity as it gives audiophiles a balance control being separate left and right volume controls. I still recommend the stereo unit if your room a... | |
| Class A amplifiers - which are considered the best I'd like to see the circuit when and if he publishes it.Just noticed it also says it is run in Class A1, not Class A. Some tube gurus say the extra couple of watts gained from Class A1 is a backward step, rather a couple less watts and pure class ... | |
| Class A amplifiers - which are considered the best This is correct the bias on a true SET amp increases and decreases the power (watts) and it stays class A. And then there's Class A1 with SET's that's another kettle of fish.But what you said about Vick's amp was "vicks,Your amplifier is 'single e... | |
| Class A amplifiers - which are considered the best I don't think they are single ended as they have series and parallel output tubes, this is said to behave like single ended without actually being single ended.http://www.6moons.com/industryfeatures/audiopax2/4.htmlCheers George | |
| Class A amplifiers - which are considered the best Yes James I believe these are class A most of the way, I know a friend of the designer here in Australia, Elson Silva, he builds "Cymer" amps here, he says there is just the same amount of fudging of class A amounts in the tube circles as well as ... | |
| Class A amplifiers - which are considered the best I believe the "power envelope" did nothing extra for the class A bias. What I believe it did do was to aid in transient ability with a bit more short term current from the power supply. This way they saved on big expensive power supplies, and got ... | |
| Class A amplifiers - which are considered the best Thx Rx8man, my real name should have been georgehifi but for some reason Audiogon would not let me use this, so I went with the next thing I could remember. Here is a more descriptive post of the self contained water cooled class A I built. http:/... | |
| Class A amplifiers - which are considered the best 03-06-12: Doggiehowser: Didn't Nelson Pass create the sliding bias thingamabob? :03-06-12: DoggiehowserIn actual fact my ex boss (Steven Deratz) invented the first sliding bias system back in 1978 and had a world wide provisional patent on it for ... | |
| Amp for lightspeed attenuator? = $1000 used Oh, ok then then all you need is it set it for 3db gain, and if you can bridge out the rotary input switch, it's not as bad as having a pot in the signal path, if it's a dual leaf switch (that is one leaf either side of the wiper). If single leaf ... | |
| Class A amplifiers - which are considered the best Krells are great amps, just that we were mislead quite a bit by many manufactures even today about Class A. eg: Zaphod1000 said he once measure Musical Fidelity's little A1 integrated (you know the one, you wanted to wipe your feet on it)in spec, ... | |
| Class A amplifiers - which are considered the best Unsound: Georgelofi, I did see your link. I believe that at the time Mark Levinson was building those amps, he was charting fairly new territory, and those amps were overbuilt. Compare the size, weight & number of chassis, to a newer Class A a... | |
| Class A amplifiers - which are considered the best They still are not anywhere near pure Class A up to their rated outputs, as you think they are. I built quite a few pure class A amps back in the 80's based around this Nelson Pass circuit http://www.passdiy.com/pdf/classa_amp.pdf but expaned out... | |
| Class A amplifiers - which are considered the best Same topology Unsound, just different models in the same rang as the KSA250 range, all with partial Class A not even 30% of their full output into 8ohms. Like I said the only ones to have high % of Class A compared to rms output, was the fan force... |