atmasphere
Responses from atmasphere
| Does anyone care to ask an amplifier designer a technical question? My door is open. I read both links. The first is common knowledge and nothing about RF. The second is long so if there is something in particular you want to me to read please quote it here. Are we playing "Wack A Mole’ here?Im really tired of RF being the devil f... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. What can I expect to pay for a recap (plus any normal servicing)? I can actually drop off the amp at Krell myself (they are an hour or so away).While it might be old enough that some of the filter capacitors could be getting near failure, that is... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Please explain. Im all ears.Actually Roger, I did that earlier. You must not have read the post?The loading is for the benefit of the preamp, if its sensitive to RFI. If not, no loading is needed. IOW if you need loading to deal with brightness, t... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. I think microphonics can sound euphonic. I built a Bottlehead be pre-and while it was fantastic the tubes in that application were very microphonic. It lends everything a rounder more robust sound as it’s like a delayed Feedback. That's a new o... | |
| inherent design flaws with a 3 way, 15" / 8" / horn (large tower) speaker? The Classic Audio Loudspeaker models T-1 and T-3 seem to be set up this way. They sound great- one of the most transparent and musical speakers I've heard. | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Thanks.I didn't totally follow all that, but that's due to my level of ignorance. @prof Don't feel bad. A lot of designers don't get it either!Good question. Cartridges are very different in how they respond to loading. My Denon 103 is a 14 ohm ... | |
| What separate tube phono stage do you use ? 76db gain tube phono stage and no noise ? Very impressive.Ralph, what do you think ? How did he manage that ?Oh there's noise alright. All phono sections have noise.Its likely using a step-up transformer. Its very easy to get low noise and high ga... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. What is the role and importance of significantly upgraded power cords in component design? It seems to me that the PC is a fundamental part of the electronic device and that the manufacturer should optimize the cord for the device in building i... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. I’m sure you misspoke when you referred to pi-squared. The 6.28 factor you referred to is of course correct, but that is 2 x pi, not pi-squaredYup- thanks for that. My medication is a bit too powerful today...It adds better isolation on high freq... | |
| Joule-Electra VZN OTL Users- I Need advice! Do you recommend to keep voltage at 65 and slightly bias low (say 26?) As far as keeping the amp in standby, aren't the little tubes more sensitive to powering cycle than to staying on at minimum power "standby"?Yes to the first- try it and see... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Hi Ralph. Im curious if you use an inverse RIAA network to check your EQ. If so where did you get the values? I built mine from the advice of Peter Moncrieff, Mitch Cotter and Dick Sequerra who were the first to discover that many RIAA EQ curves w... | |
| I like my system flat, no tone controls, no eq..........what is your preference, and why. I've been playing systems sans any tone controls since the late 1970s. I don't miss them nor do I miss messing with tone controls to get the tonal balance right. i worked on my room a lot to get rid of reflective surfaces and that really helped. R... | |
| DAC plus Preamp or DAC-Preamp or DAC-Volume Control ? @david_tenYour Plan A (Post above) is superior to > Plan B (Input transformer) Both of which are superior to > What I am doing with the cable approach (Keeping Pin 3 'Open/Not connected')?I've listened all three ways. The transformer has t... | |
| Joule-Electra VZN OTL Users- I Need advice! Your experience is one we've heard about fairly often. If you're not planning to use the amp for a few hours, you can totally turn it off. No need to run at a reduced voltage- that will slowly eat the tubes. But it is a good idea to do the slow st... | |
| DAC plus Preamp or DAC-Preamp or DAC-Volume Control ? Thanks, Ralph. How would I go about doing so?You could take the amps to any competent technician, have them contact us (651-690-2246) and we can tell them how its done (instructions are below). Otherwise you could also ship it to us.Any SET has an... |