almarg
Responses from almarg
| Mark Levinson 32 or Audio Research Reference 3 A slight correction to Raquel's characteristically knowledgeable post. Long interconnects will cause upper treble rolloff, not bass rolloff, if driven by a preamp having high output impedance (at high frequencies). The higher the capacitance per u... | |
| Dedicated line In further support of the comments by Gs5556 and Jea48 about having a separate grounding rod for the dedicated lines, see section 1.2 of this document.Regards,-- Al | |
| Best length for analog cables from dac to preamp? I hate to complicate the discussion, but a well-known cable manufacturer once told me that RCA interconnects should generally not be shorter than 1 meter. He gave some kind of scientific explanation I didn't understand, and I can't guarantee it wa... | |
| How to shop for speakers? Strictly speaking, neither interpretation of "efficiency" is correct. "Efficiency" would most properly be defined as acoustic power out vs. electrical power in.However since both "efficiency" and "sensitivity" are being used in reference to acoust... | |
| New op amps, good idea? I second Bombaywalla's excellent comments, which I saw as I was just about to post the following: As someone with significant experience designing op amp-based circuits (although not for audio applications), I am highly skeptical.I would ask him w... | |
| What are you sitting on? This thread will probably be of interest.Best regards,-- Al | |
| Surface Noise - another question Cerrot, have you tried load resistances that are much lower than the 47K you are using? And have you tried various load capacitance settings? Along the lines of Ralph's excellent post, those values will directly affect both the frequency and the a... | |
| SS amp with tight deep bass ? I have the updated version. I'm actually on my second EE Minimax. To be honest, this little preamp is an overachiever. OK, good. The Bryston 3BSST that was suggested has an input impedance at its unbalanced inputs of 50K. The Plinius that was sugg... | |
| SS amp with tight deep bass ? Thanks, Unsound. The EE site's description, just above the "Specifications" link, says "We hope that you will consider voting for us in the components of the year for 2007." And the Morningstar page I linked to refers to "the newly upgraded Minima... | |
| SS amp with tight deep bass ? The specs shown here indicate an output impedance of 700 ohms, although reviews from some years ago indicate 1.5K. I would suggest that you try to obtain clarification of that discrepancy from the manufacturer or importer, and, as Bob suggested, t... | |
| Headphone Impedance I would not expect there to be any adverse sonic effects from the higher impedance. In fact it may be somewhat beneficial, just as it is desirable to have the input impedance of a power amp be as high as possible relative to the output impedance o... | |
| vintage amps Avoid 80s carver gear...poor reliability...FWIW, in a second system I have a Carver M400t, which still works like new after 25+ years of light to moderate use. For a number of years during the 1980's I also had a C4000 and a TX11, which were compl... | |
| Octave V70SE to drive Martin Logan Summits? What can you decipher from the following specs? Nothing particularly conclusive. The statement about damping factor would seem to imply that its damping factor is not particularly high, and therefore its output impedance is not particularly low. W... | |
| Octave V70SE to drive Martin Logan Summits? Audioquest4life, yes I recall that discussion, in this thread. Thanks again for providing the information and the links. That's certainly a good sign that people are happy using the amp with the Aeon, although the Aeon is a slightly less difficult... | |
| Octave V70SE to drive Martin Logan Summits? I second the concerns indicated by Stan and Dob about the impedance characteristics of the Summit. I've seen specs indicating that its nominal 4 ohm impedance drops to 0.7 ohms at 20kHz. That variation will make its tonal balance very sensitive to... |