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Aadams

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About Aadams

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  1. Why Super Hi res music files make no sense for download or playback------------ by Christopher "Monty" Montgomery, the creator of the Ogg Vorbis digital format. Very convincing and long. https://xiph.org/~xiphmont/demo/neil-young.html
  2. I am not sure what the CSP policy is on links to other hifi sites but this link will take you to a large collection of double blind a/b tests performed by various audio groups on cables, DACS, amps, ears and violins. Each link includes a description and a summary of the results. I am still looking for a test of timbre resolution in loudspeakers. https://www.head-fi.org/threads/testing-audiophile-claims-and-myths.486598/ Adams
  3. AR 5's: The bargain AR

    My 5s aren't connected now but what you describe is so close to what I experienced it must be correct. I yield to your superior knowledge Adams
  4. Carl Richard (Carlspeak) RIP 11-11-2017

    He initiated a number of enduring, helpful threads. He will be missed. Aadams
  5. The system is still operating. My, months ago, statement that tuning was at an end was premature. I have tamed the overemphasis of deep bass and more importantly have discovered center balance is not obviously simple to achieve when systems are merged in this way with equalizers and power amps. The BA CR65s have 4 gain controls that can affect left right balance while the AR58s have three. What I have learned is identical index points for left and right knobs on the same unit of equipment are not necessarily the same. Just because settings look equal doesn’t mean they are equal. I think folks who bi-amp or tri-amp speakers even with identical power amps may sometimes face the same problem without knowing it. When the LR center balance of the upper speakers differs greatly from the lower speakers it is obvious, but when they are very close to centered yet not aligned it is not easy to detect nor easy to correct by listening without a mono signal. Correcting that last little bit of difference to align the center points makes a huge difference in the sound. My mistake was to assume all the gain controls were working identically and balance the left and right speakers as a group when I should have been centering each system separately before they were all engaged to play music. My acceptance of the close but not correct setting for so long was, I think, because I was still thinking that the problem was with speaker placement or angles or perhaps this was just a bad idea. Happily, the system is improved and for now the beast is tamer and easy to live with. In my 11 steps above I covered vertical balancing of the separate systems but I ignored horizontal, left/right, because it seemed so obvious, but it is not. I have attached an illustration that may help.
  6. I'm afraid it has happened?

    I am not a physicist but 75 watts sustained over any time period is equal to the energy of around a constant 10 horsepower in the same period. A small tweeter voice coil that could handle that much energy would glow like a small electric stove or perhaps a light bulb. Your speaker could double as a food warmer or space heater. Adams
  7. Transmaster you seem to have an ear for timbre and are one of only three I have seen mention it on the forum. Is there a loudspeaker from which you personally have heard the difference between precious metal flutes or a Strad vs Guanari vs "good modern" or even violin and viola in their shared range? My prejudices say no for loudspeakers but possibly yes for headphones and even then only if the instruments are solo and meticulously recorded. What is your experience?. There is no passion here just a question. Aadams
  8. I'm afraid it has happened?

    Any feel for power response vs the original 3a tweeter?
  9. Capacitors Redux

    What a subtle prod. Actually I am quite satisfied. Judgement of good sound is so subjective, it was perhaps a lame way of saying my system settings might not be satisfactory to others. For me it is enough if noise does not intrude, distortion is sufficiently low that instruments and voices sound as expected, with plenty of dynamic range. I remember reading that proper measurement of caps required removal and because there is no audible problem I have not touched the 58s circuitry. I once replaced the caps in a 2ax when I had it open for pot cleaning. The task was trivial and afterward I thought they sounded a little smoother in the mid-range. For me the 58s, having so many caps would be a PITA as you say, so I don't want to open them on spec. My equalizer adjustments are very mild. Adams
  10. Capacitors Redux

    I was struck by what K Kantor said then seconded by T Tyson---------- to paraphrase------- if it doesn’t sound broken but you want to change the sound you are better off experimenting with an equalizer. In 2004 his preferred approach to capacitor replacement was replace only the ones you know are malfunctioning and with the same type. My 58s pair have all the original 5 Unicon caps each. The caps don’t look bad, no swelling or leakage. For me, attenuated with an equalizer they are Ok, with zero attenuation they are unbearable. I run all my ARs in the same way and they all sound OK TO ME. I am not a tinkerer. I don’t want to do a preventive recap when the speakers are working satisfactorily. But, if I did it and got a different sound I would try to equalize it out until they sounded right again. Adams
  11. Capacitors Redux

    I think I am not alone in realizing this forum has a cycle of topics that ebb and flow through the years. For this reason I thought I would research the archives before asking a question about efficacy of capacitor replacement in my AR 58s pair which have the original capacitors and sound identical and OK to me. I came across this thread from 13 years ago that still seems very relevant , at least to me. I discovered what I was thinking had already been expressed by others years ago. I thought I would share. Enjoy ADAMS
  12. Preamp Signal Splitting

    Ignore this thread. Splitting with Y cables is sub optimal. I already had a solution on hand and did not realize it till now. Adams
  13. I have done some reading on the internet about the consequences of splitting a preamp out signal with Y cables but nothing I feel that is authoritative. I am sure the signal is weakened with each division but does anyone here know what the penalty for each division might be. The preamp has one set of RCA out jacks and I would like to split 3 ways. Is this OK? Is it a mistake? Anyone here with experience doing this? I would appreciate your informed opinion. Adams
  14. The range of these Villchur articles gives insight into why he regarded the speaker business as a stop over on a longer journey. His discussion of vocal recording is hilarious and is still exactly on point today. Thanks AR_pro. Here is a quote from the article entitled "Frequency Response Enshrined", 1952. It indirectly explains why the AR3a tweeter, which crosses over at 5khz must be working correctly to achieve its intended effect. If output is reduced, whether by defect, bias or time the AR3a will produce a "mellow" or "muffled" sound. Several fo the articles address hi fidelity sound from the perspective of the human ear which has not evolved an iota in the last half century. The is good reading and a reminder that as time goes by the fundamentals still apply.
  15. I have done of a lot of searching and found some interesting reading on the topic of DSD. DSD appears to be a future proof recording technology which is used to preserve old recordings and create new ones with dynamic range greater than what the human ear can safely hear. The process appears similar to the recording of RAW files in consumer digital photography. The RAW image is rarely perfect but it captures the greatest amount of data which becomes the basis for manipulation by a human using a computer to yield a pleasing result. Afterward it can be downsized to other smaller image formats to suit an intended purpose. To display the full dynamic range of the largest 35mm RAW files, which cannot yet exceed that of the human eye, you would need a wall larger than can be found in most houses. Likewise,to fully exploit the dynamic range available in DSD you will need a listening space quieter than most of us can conveniently achieve. I am not sure the parallel is exact but it is very similar. The question is the same as it has always been, are you chasing sound or music. Just buy what moves you. Adams
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