ieales
Responses from ieales
| Rogue Audio. Reliability issues? Anyone? Regarding power tubes, as others have said, no need to match if you have some form of bias adjustment. Measured power and distortion? Checked for HF oscillation? | |
| Rogue Audio. Reliability issues? Anyone? I've had one KT88 fail in the past 40 years and it took out the surface mount autobias board. I'm probably not the typical tube owner as I have an hour meter and test and reseat tubes every six months. [about 500 hours] I must stress that there ... | |
| Rogue Audio. Reliability issues? Anyone? Power tubes are matched for Gm and Ip. Bias controls static Ip [plate current]. Gm is how much the tube responds to drive change. Mismatched tubes have more 2nd harmonic, i.e. fat tube sound coloration. I match drivers, triode halves and power... | |
| Could these be your next cable loom??...and price be damned. a fool and his money are soon parted | |
| Tube tester? Schematic, BoM, CAD dwg w dimensions and build photos for available @ ieLogical Valve Tester | |
| mcintosh mc275 mk6 tube rolling ? This is important with dual triodes like 12ax7 and 6922. If both triodes are used in parallel, the tubes can be matched using both triodes together. It's really only a problem if each triode is used separately as in a phase splitter like a lon... | |
| mcintosh mc275 mk6 tube rolling ? If you want to roll tubes, you should have a tester to make sure you are comparing good tubes. To see what's involved in making a proper tester see ieLogical Build Images There are simpler that do less and more complex that are mostly beyond... | |
| Tube tester? Depends on how old the tube is and how long it sat on the shelf. Testing NOS that have sat for decades will almost all certainly fail a gas test. Even new tubes that have sat around for a couple of years may fail the gas test. Tubes that fail a ... | |
| Moved Audio Quest cable to my DAC. WOW Mcintosh doesn’t believe in power cables of quality for some reason. McIntosh are designed by engineers. They have test gear. They don't have to 'believe'. If someone could point me to a measured difference between amplifier power cables at t... | |
| Moved Audio Quest cable to my DAC. WOW In both cases above, measurable parameters were the result of the changes: Pointing Angle and Boat Speed. In both cases the boats were optimized for expected conditions. Had the '83 race been a flat drifter series, the outcome could have been the... | |
| Moved Audio Quest cable to my DAC. WOW I'm not saying it's illusion but that the ascription is not necessarily the proximate cause. In the case of the power cord / DAC there are innumerable other factors that can account for the SQ change claim. Having designed and built professional... | |
| Moved Audio Quest cable to my DAC. WOW It’s a curse having an electrical engineering background. I thank my Dad for having a real HiFi in the 50’s rather than some piece of furniture w a radio. Lenco transcription turntable, Bogen tube amp and a University CoAx in a box bigger th... | |
| Moved Audio Quest cable to my DAC. WOW I just moved my Audio Quest power cable to my DAC and noticed a more realistic open and better detail. Did you replug the cables BEFORE you moved them? EVERYTHING EXACTLY as before? [i.e. different length that moved the power cables so one is... | |
| Dummy Speaker Load Or you can try this. https://www.amazon.com/Parts-Express-Non-Inductive-Dummy-Resistor/dp/B0002KRDGC They’re quite inductive. I know, I tried them. @jaybe Other than tubes which may need time to de-gas and new speakers which need to loos... | |
| Tubes for a pre stage... matched NEW or unmatched identical NOS? I'm curious if the clear tops were a cost saving measure? Definitely simpler construction. Perhaps a thinner glass. Anyone run them for 24 hours on heater only before listening? |