atmasphere
Responses from atmasphere
| CD Player creating white noise through preamp. Sure! A CD player can emit digital noise which is audible. Sometimes it will sound like an odd buzzing, but can manifest as a hiss too. Viewing the output with an oscilloscpe can reveal what is going on. If the noise is profound it might be a malf... | |
| A tubes vs. Solid State question. Hi Nrchy, even ordered harmonics are harmonics where the fundamental frequency has been multiplied by an even number, 2,4 and the like. 'Times 2' yields the '2nd harmonic' and so on. Odd orders are fundamentals multiplied by odd numbers, 3,5 and s... | |
| A tubes vs. Solid State question. It surprises me that at this late date, this debate can still go on. I remember in an analog/digital debate years ago someone mentioning warped records as a reason to throw out all analog forever. It was a sideline comment- obviously just because ... | |
| A tubes vs. Solid State question. If the amplifier is push-pull, then such harmonics can be cancelled in the output. This is how transistors do it too. Single-ended triode amplifiers thus have much more even-ordered harmonic coloration, which is the source of their (IMO) overly-ri... | |
| A tubes vs. Solid State question. Alright- the reason I prefer tubes is that they lack coloration- and by that I mean they lack odd-odered harmonics that are signature of every transistorized amplifier I have heard.I don't like the fact that tubes are less reliable, generate more ... | |
| Whats on your turntable tonight? Rush, have you heard any of the Decca recordings of Wagner with Solti conducting? For many years his recording of the Ring (and the annual visitation from the Met) were in many ways a penultimate audio experience for me. It took me years to finall... | |
| Can 5AR4 be replaced by 5U4G or 274B? The 5AR4 has a controlled warm-up characteristic, but otherwise handles conditions similar to the 5U4. The voltage drops are a little different too.Generally if a 5AR4 is in an amplifier you can count on it being there either due to space consider... | |
| How many types.. Silvaweld, Graaf and Croft are three more.Generally OTLs seem to split along two lines: Symettrical circuitry, using a Circlotron for an output circuit, and Asymettrical, using a Totem Pole output, which looks a bit like a mu-follower circuit.OTLs... | |
| A few systems heard at the Rocky Mntn. audiofest Having exhibited at the shows for some 16 years now, I have found that the only way to survive the show is to play the music that I like personally. My taste is not that of the average audiophile- I like new material a lot, from ambient to punk, m... | |
| Historical look at amps It might be a little late to comment on this, but here at Atma-Sphere we use an old school means of defining feedback:A cathode or emitter resistor is a form of negative feedback called *degeneration*. This form of feedback occurs in real time and... | |
| Can you have too many tubes? How many tubes you have in boxes doesn't count. If it did, I got y'all beat. But does a vacuum tube LP cutter system count?? | |
| Can you have too many tubes? Can you have too many tubes? No. More tubes is more better. | |
| Why dosome high pwr amps fail to drive some spkrs? Hi Ulf,- it remains a fact that not all amps will drive all speakers, in fact, you have to be very careful to make sure that the amp and speaker interface is doing what it should.Speaker cables, the length of the cables, the use of negative feedba... | |
| Your opinion on the evolution of amps since 70s? Hi jay_douglas_287@msn.com to some degree you are correct but only for certain parts and materials. In 1970, Teflon parts were astronomical in price- about $1,000 apiece in round numbers, today a Teflon part is a fraction of that. But Caddock resi... | |
| Your opinion on the evolution of amps since 70s? Both transistor amplifiers and tube amplifiers have seen plenty of evolution since the 50s , 60s and 70s. I have had a hands on experience with both as I ran a consumer electronics repair shop for a number of years during and after college.With re... |