chervokas
Responses from chervokas
| Using a RS SPL meter I actually have found what Ethan Winer has reported here --http://realtraps.com/art_spl.htm -- to be largely true. The Radio Shack SPL meter is pretty accurate for the bass frequencies, not so accurate for anything above around 1kHz and no correct... | |
| Best Rock Album in 2012 It hasn't really been a stellar year for rock to date to my ears, I must say, but the rock album's I've really liked so far have beenJapanroids - Celebration RockBruce Springsteen - Wrecking BallDr. John - Locked DownDr Dog - Be the VoidI just lis... | |
| Disappointing Albums of 2012 I agree with those who say Wrecking Ball is excellent; I also loved Magic and thought Working on a Dream had it's moments. I actually thing Springsteen's been on a bit of a late career run a la Dylan post-Time out of Mind. Haven't heard all the ot... | |
| Tube Preamp Paired with Tube Phono Stage? Right, I get that, it's an RLC circuit and the capacitance is tuning the resonant frequency, and the lower the capacitance the higher the frequency (and the R is damping it).So what does it take in terms of good design for the phono stage to be st... | |
| Tube Preamp Paired with Tube Phono Stage? Thanks, yeah, that's what I'm trying to get a grip on, if we're talking about a resonant peak way up above the audio band....maybe 600 khz a the low end or even pushing 2 Mhz at the high end; where presumably it's far enough above the audio band a... | |
| Do I need to replace all my tubes at the same time It probably depends on which tube has failed in what type of amp. If the tube that's failed is an output tube in a push-pull amp where it's ideally part of a matched pair, then you might want to replace both output tubes with a matched pair for lo... | |
| Tube Preamp Paired with Tube Phono Stage? Al, thanks for the clarifications. I just installed an AT33EV at home and noted that the specs supplied in the manual were pretty thorough on those scores -- 10 ohms impedance at 1 khz; 22 uH inductance at 1khz -- but I gather that's not always th... | |
| Explain Class A amp to non audiophile friends Well the whole goal of running class AB instead of Class B is to pretty much eliminate crossover distortion by judicious biasing of the output devices and usually also the use of negative feedback. I'm not sure if it can be eliminated to the point... | |
| Phono Section, Preamp, gain matching for noise Maybe the RM has considerably more self-noise than the phono stage? | |
| Explain Class A amp to non audiophile friends First you have to think about the waveform of a sound, it has a peak and a trough and it cycles from peak to trough over and over at a certain frequency.With a Class A, the amplifing device is drawing more than enough current at all times througho... | |
| Tube Preamp Paired with Tube Phono Stage? Odd that Boulder would suggest 100 ohms generically for all moving coils.The load impedance of a device should be at least 10X the source impedance of the device driving it to minimize insertion loss. Even at 10:1 you have a 1/10th loss of voltage... | |
| recommendations for tube dampers??? I don't think there's a darn thing dampers can do to extend the life of tubes. Yeah I suspect vibration can shorten the life of tubes (just as vibration can shorten the life of light bulbs), but we're not talking about guitar combo amps here so th... |