terry9
Responses from terry9
| Turntable got absolutely crushed by CD Well @cakyol, there is the Fourier Theorem, which states that all you have to do is analyze by sine wave. Everything follows from a sine wave analysis.Consider a sinewave. How many samples per wave are required to push distortion below 5%? When I ... | |
| The urge to tinker is awash. What TT might better mine and why? @markmendenhall Agree 100%. | |
| Turntable got absolutely crushed by CD It depends on your taste. If you can't abide wow, which no-one with perfect pitch can, then CD is your best bet.I don't have perfect pitch, and I don't mind wow. I can't abide the tizzy digital sound, so I listen to analogue.But first, try a real ... | |
| The urge to tinker is awash. What TT might better mine and why? @markmendenhall personally i love the Nott sound and didn’t want to get away from it, so I just got ‘more of it’Yep. And air bearings are yet more of the same. I much prefer the ’sound’ of really good bearings to anything else, regardless of the t... | |
| Any meaningful differences... To some extent, it depends on the resistors you choose. I use nude Vishays (VAR series) in all my controls, and I never use a ladder - prefer one resistor for each value step of the control. Rotary switch by Seiden SG. Makes the total pricey - 20x... | |
| The urge to tinker is awash. What TT might better mine and why? It's not incompatible, IMO, but I've never seen it done. I'd like to. Bear in mind that there are two sources of friction and noise: thrust, which is obvious, and radial to stabilize the platter. Even some air bearing turntables don't bother with ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Thanks for all your help, Roger. You really have opened up a stack of stuff for me to do. Much, much appreciated.Hate to be pedantic, but I think that the 45uF figure should be 4.5uF, which is less of a problem: (75**2) * (800 * 10**-12) = 4.... | |
| The urge to tinker is awash. What TT might better mine and why? You ask why.I suggest that it depends on your taste. If you can’t stand wow and flutter, get a direct drive. They tend to control that very well. Personally, I don’t find wow and flutter nearly as offensive as tizzy digital-type sound.If you can’t... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Thank you for your interest, Roger. I take your comments in the helpful spirit in which they were given.You have motivated me to look again at the stock Quads, and think about driving them with my current amps. These amps have proven themselves to... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Agreed that polypropylene is best for the money. Improvements on polyp are incremental and absolutely not worth it - unless you are a hobbyist who wants to see how far he can go, just because. What I see in Plitron (theoretically) is two things: f... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Jumped on the bandwagon? No - Shanghaied. Didn't want to be convinced, but the two-alternative forced choice paradigm left me no choice. Like when your optometrist says, "Better or worse? Better of worse?". Easy to design a single-blind experiment... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Thank you, Ralph! | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Roger, you are being very generous with your time and your expertise. Thank you!You have given me a container load of practical information which only comes from practical experience. Much appreciated! As requested, here are some details of my sys... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. In case you are wondering, the 25V rails are to accommodate Quad ESL's. With 75:1 step up transformers (Plitron), the amps can only punch the panels to 3750V, exactly half the level which engages the protection circuit. So I can bypass the protect... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Thanks for the nod ... I guess the takeaway is, "Don't be so lazy. Match HFE at operating temperature and current." Thanks! |