atmasphere
Responses from atmasphere
| IN YOUR EXPERIENCE ?? WHAT IS THE QUIETEST 12AX7 TYPE TUBE ??? 6072 ? Spiral Filament Telefunken and Hitachi made the best I've seen. | |
| Zu Audio loading resistors A good bit of amplifier power is just going to be used to heat up those resistors. I can't help thinking there's a better solution. The higher impedance of the speakers is good if you want to keep distortion down, and that's pretty well regardless... | |
| A Question About Volume Controls Types One control is entirely analog and that is what you are adjusting.The other is digitally controlled, and remembers what its setting was last time it was operated. The control itself is simply a counter wheel and can spin as much as you like. When ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Apparently some people just cannot restrain themselves or have difficulty with reading comprehension-Or there might be a third explanation.minimize artifacts occurring from the interconnect cable between the preamp and amp.A second reason is that ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Source output 22R, amp inputs 23k5 or 100K. Adding a preamp with attendant switching, circuitry, noise and additional cables is little more than a subtle tone control. It maybe different, but it may not be better.Some volume controls in DACs are a... | |
| What would be good preamp to run McCormick dna1 The input impedance of the DNA-1 is 100Kohms, which makes it a friendly load for most tube preamps. It only accepts single-ended inputs; @gdnrbob above mentioned our MP-3 (which is a balanced preamp) but I think you could do quite well with our U... | |
| Tubes with Infinity IRS Betas One solution for such an impedance curve is a set of ZEROs (www.zeroimpedance.com) which will put the Betas in the range that most tube amps can handle. | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. why do some amplifier manufactures say to use a preamp between their amplifiers and the streamer when you are only using a streamer and power amp, no vinyl and no other sources. I understand the need for a volume control and to have the impeda... | |
| best place to introduce tubes into circuit What sort of source might you be using? A turntable? | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Well, it turns out that it was my friend Ralph (we have never met, I simply call him my friend) who misspelled Charley's name. He did the measurements of our old M-60 kit for Glass Audio. I met him and hung out back when he was still Avalon Louds... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. I am likely one of a very few designers that actually will repair others equipment. I do this because I like to see others work, how they make things, how their things perform. I have tested over 400 amps and preamps and can tell you all about ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. I feel one of the great benefits of tube products is the limited bandwidth eliminates susceptibility to much of the higher frequency ac noise. Comments?You can have plenty of bandwidth and not have noise problems. Noise is best handled by proper... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Some products allow the music to communicate to you, some don’t, and a combination of components may speak to me, but not to you. I know this isn’t a technical question, but I felt compelled to write it nevertheless. Dr Herbert Melcher showed t... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Also, while I don’t recall the exact numbers, Ralph has stated in some past threads that he has observed remarkably high levels of energy emanating from LOMC cartridges at ultrasonic or RF frequencies.@almargThe Hagerman site shows a 30db(!) pea... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. (although I am unclear if the phone company developed the standard which I have heard referred to as the 600 ohm standard).The 600 ohm aspect has to do with the spacing of the lines on telephone poles. You've seen them many times - that spacing ca... |