clio09
Responses from clio09
| Atma Sphere S30 amp Dpe,Interesting thoughts on the Berning/Jazz Modules combo. I was always intrigued by Berning and like the Micro ZOTL. Perhaps they just don't match up well in this instance. The VAC amps do offer nice mids, although the EL-34 models more so than ... | |
| Who is using passive preamps and why? I think you will like it. Definitely makes you think about what it takes these days to get high quality sound. As an example, the combined cost of my Lightspeed and RM-10 MkII is $1450. That's a lot of sound per dollar in my opinion. | |
| Who is using passive preamps and why? It has been a long time since I read Stereophile, but Sam's Corner in the February issue has a write up of the old Halcyon PVA and the Lightspeed Attenuator that I own. The article prompted me to put the Lightspeed back in my system for a whirl. I... | |
| Who is using passive preamps and why? Almarg: The higher the output impedance of the source component, the greater the losses that would result from that transformer impedance.While I only quoted part of your response Al, Jack did mention DC resistance and sound degradation, particula... | |
| Who is using passive preamps and why? Al is correct, not a TVC but a slightly different animal. Considering I have spent a lot of time with Jack Elliano the last few weekends (we are Las Vegans) I can say the guy knows his stuff and his SET amps sound great (with which he uses a PVA w... | |
| Who is using passive preamps and why? Here is a schematic of what I built:http://www.electra-print.com/pva.phpHere is some more information:http://www.electra-print.com/techblog.php?blogid=1 | |
| Who is using passive preamps and why? I think I answered my own question. Using the link below, a 25k pot and 100k amp Zin equals 20k. Parallel Resistor Calculator | |
| Who is using passive preamps and why? Looking at this from Roger Modjeski's pot-in-the-box concept, which he recommends for the RM-10 MkII, and I have seen him use with the RM-200, the specifications are as follows:Input Impedance 50K OhmsOutput Impedance 0 - 25K OhmsFrequency Respons... | |
| Who is using passive preamps and why? At full volume (worst case) the combination of amp Zin and passive should be at least 10X source Zout but let's go with 100X. Pubul's 50 ohm source should see at least 5K so a 10K passive looks to be a great match. A 10K passive in parallel with t... | |
| Who is using passive preamps and why? ...if the impedances and cable capacitance are right, so that a transformer doesn't really solve a problem, wouldn't a resistor based passive, like my Goldpoint, perform better than a TVC, especially in terms of bandwidth?Theoretically it should a... | |
| Who is using passive preamps and why? Many passives have a Zin of 10K or less and this is further reduce by the Zin of the amp. At full volume they are in parallel so a 10K passive and a 10K amp would result in a 5K load for the pre. That is problematic for many CD players and phono s... | |
| Who is using passive preamps and why? Herman,What formula are you using for the calculations.From your original example, I would have never thought an amp with !0k in put impedance to be a good match for a passive. More like 100k ohm in my mind. | |
| Atma Sphere S30 amp The VAC amps and the Jazz Modules are a great match. Just want to try the Atma-sphere since it was used in the voicing. At 12 ohms the VACs put out closer to 55 watts (maybe since it is the 8 ohm tap too) while the S-30 would be closer to 40. I do... | |
| Tape Project Tapes I've listened to the Arnold Overtures so far. Business travel and some other audio projects (just built a passive preamp and in the process of building an amp) have gotten in the way of some listening time. The material, although unfamiliar to me ... | |
| Atma Sphere S30 amp Glory, I plan on buying the S-30 new.Paul, I will try the 4 ohm tap. I've been trying to reach Roger with no luck. When I lived in Santa Barbara he was more accessible. I'm going back for a visit in a couple of weeks and if I don't hear from him b... |