atmasphere
Responses from atmasphere
| "Tell the industry what you want" postingboard I'm with Spencer on this one- good quality tubes built the way the NOS tubes were would be really nice. | |
| Grounding phono cable The ground wire makes no difference, except that of course if it isn't there you will really notice it :) | |
| Stand out phono stages Lew, FWIW I don't think there exists any situation in which there should be no grid stop resistors. Without them the circuit is RF susceptible, and the preamp can also be prone to internal oscillation. | |
| Tubes vs. solid state. Guidocorona, feedback is very definately a factor in preamp design. A very famous Ampex recorder (model 351-2), used by RCA and Mercury as well as many others, featured a zero feedback record circuit. EQ of phono preamps is often handled in the fe... | |
| which is better ? MC phono stage or MM+step-up ? Yes- don't move the wire. It only breaks in with a signal though it. There are break-in boxes made for that that can speed things up.We have a number of customers using Acoustats. I've heard a few of them with our amps over the years. They are not... | |
| Tubes vs. solid state. Pinkus, the only issue with transistors is that without feedback, they will make more distortion than tubes will. However, if the design is competent, the higher orders will not manifest nearly so much as they will if feedback is applied. Its my o... | |
| Why Do We Use Preamps? A preamp serves five functions:control volumeselect inputsprovide any needed gainbuffer volume control from output cableand the least understood (but nevertheless very real):control the interconnect cable, i.e. prevent the cable from having an eff... | |
| Tubes vs. solid state. Minorl, of course there are electric cars too, and energy storage systems that are a lot better than the internal combustion guys would have you believe.There have been improvements in amps in the last 50 years. There are new topologies that did n... | |
| which is better ? MC phono stage or MM+step-up ? If you have a low output cartridge, the phono cable will need a good 200 hours. Its best if you don't disturb it! | |
| Can someone give me an explaination re: power amp. Kijanki, some tube amps will make higher distortion at very low power levels just like transistors. Others (SETs for example) the distortion becomes unmeasurable.Feedback is appearing more and more to be a poor means of ridding audio circuits of d... | |
| Tubes vs. solid state. Minorl, sounds to me as if you are saying something that I've been harping on a lot- that the playback system has to take into account the rules of human hearing/perception and obey those rules. Designing to specs on a piece of paper doesn't do it... | |
| Tubes vs. solid state. Paulfolbrecht, yes, General Electric proved that humans use the 5th 7th and 9th harmonics as a means to determine the volume of a sound back in the mid-60s.So how this relates to the TvsSS debate: The issue centers around feedback- by adding feedb... | |
| Tube preamp output impedance at low frequencies Gmuffley, don't worry- as I pointed out, the question is does it matter? If you measure the unit at a low enough frequency you will detect the rise. More to the point is that as long as the maximum cutoff frequency of 2 Hz is observed by the desig... | |
| Tubes vs. solid state. Alright- here are some basics:Given an amplifier with a propagation delay (IOW, any amplifier), and a constantly changing waveform (such as a musical signal), the application of loop feedback (negative feedback) creates a 'non-linear dynamic syste... | |
| Green, Eco Friendly Class A Monoblocks So far the capacitor storage technology is still 'on the way'. It might be that EEStor is the furthest along. http://theeestory.com/The other players in the US are Maxwell and Intersil, plus there is still a company here in the Twin Cities that ha... |