almarg
Responses from almarg
| TRL Dude or Joule 150 MKII for Major Pre Upgrade I wouldn't expect that shorting the preamp inputs would make any difference, since the problem occurs even when the preamp is turned off and unplugged from the AC.Sure is a baffling problem :-)Best regards,-- Al | |
| TRL Dude or Joule 150 MKII for Major Pre Upgrade Sounds like Vett93 gave you some excellent suggestions. One additional experiment I would suggest is that besides shorting the two pins on the XLR connectors, you also short the center pin and ground sleeve of the two RCA connectors for the high p... | |
| Double Wide AES/EBU No, a "double-wide" AES/EBU connection does not segregate clock from data. Although I'm not particular familiar with the dCS equipment, and it's conceivable to me that some of its many possible configurations may involve a proprietary variant of A... | |
| Tone arm bounces If you are not using a record clamp you might want to get one. Perhaps vibrations being induced in the record itself, as distinct from the platter, are throwing the stylus out of the groove. A clamp would presumably help that.Also, although I real... | |
| What do you feel? I find listening to be kind of like a "runner's high." A feeling of stimulation, relaxed concentration, and focus. And (usually) some degree of mood elevation.Contrary to what Mr. T describes (which I'm sure is true in many cases), I can't listen ... | |
| Possible impedance matching issue with subwoofer? Hi Koestner,A preamp to amp connection should have an impedance ratio of at least 40:1 from the amps input to the pre out. So if the OP's pre has an output impedance of 5K, and his amp has an input imp of 450K, then his ratio is 90:1Now if he hook... | |
| Shielding components from EMI/RFI... Help please Also, in many cases either the letters UTP (unshielded twisted pair) or STP (shielded twisted pair) will appear on the cable. Or if a manufacturer's part number appears on the cable, Googling that number will presumably lead you to a description o... | |
| Possible impedance matching issue with subwoofer? Grannyring, the answers to the four questions in your last post are:1)Yes2)Yes3)Different4)NoAlso, I would be cautious in extrapolating from the results a buffer provides in one system to the results it would provide in another system, unless ther... | |
| Shielding components from EMI/RFI... Help please Bryon & Sarcher30, IMO shielding an ethernet cable will provide no benefit with respect to the integrity of the data it is carrying, or with respect to the amount of jitter that will result when that data is ultimately converted to analog (sin... | |
| Possible impedance matching issue with subwoofer? Koestner, I'm curious as to what preamp you were using. Perhaps it has an output impedance that rises in the upper treble region. Also, what were the lengths of the cables to both the sub and the power amp, and what was their capacitance per unit ... | |
| Possible impedance matching issue with subwoofer? I would add to the key facts that you listed for your gear that the output coupling capacitor in your preamp is 3.3 uf. Many tube preamps use somewhat smaller coupling capacitors, which would increase the likelihood of deep bass rolloff. Many tube... | |
| Possible impedance matching issue with subwoofer? Yes, but in addition to connecting the + output of the Atlas to the + high level input of the sub (for each channel; I believe you are using two subs), you also need a ground or signal return connection between the sub(s) and the amp. Otherwise yo... | |
| Possible impedance matching issue with subwoofer? Koestner, thanks. Grannyring, Koestner makes a very important point about using a fully balanced amp with a sub, and your Aesthetix Atlas is indeed fully balanced. The negative speaker-level input of the sub should be connected to a ground point o... | |
| Possible impedance matching issue with subwoofer? Hi Neil,I recognize and agree with everything in your last post, up until the last sentence:My point is that the "input impedance" at the buffered L/R line inputs (and L/R speaker inputs) of most subs today is 'set' by the sub's designer to accept... | |
| Possible impedance matching issue with subwoofer? 02-07-12: NsgarchNot sure what kind of sub you have, but with the ones that have both line level and speaker level inputs, the sub just 'samples' the input signal (yes, the RCA inputs too). So your preamp isn't really 'driving' the sub's amp(s) pe... |