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Thread: The Audiophile Thread

  1. #2626
    Member Firth's Avatar
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    Quote Originally Posted by progmatist View Post
    Also if any piece of equipment is plugged into a different outlet from the rest, that can create a ground loop. Inducing hum throughout the entire system.
    Ideally all of the power cords should plugged into a common protection device in order to prevent damage from power line spikes caused mostly by storms which damage the lines and transformers of the power utility. If one does that the likelihood of hum is lower. The nice thing about modern equipment is that it is so efficient, including power amps. When AC was developed, it was truly the most efficient because voltage could be stepped up via transformers resulting much lower currents and losses. Today however, if everything was reworked (sorry Tesla the father of AC) it would be high voltage DC because DC can be efficiently converted to lower voltages and the most efficient equipment runs on DC. This sources of hum would be eliminated and the hazard of AC in the home.
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  2. #2627
    Man of repute progmatist's Avatar
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    Quote Originally Posted by Firth View Post
    Ideally all of the power cords should plugged into a common protection device in order to prevent damage from power line spikes caused mostly by storms which damage the lines and transformers of the power utility. If one does that the likelihood of hum is lower. The nice thing about modern equipment is that it is so efficient, including power amps. When AC was developed, it was truly the most efficient because voltage could be stepped up via transformers resulting much lower currents and losses. Today however, if everything was reworked (sorry Tesla the father of AC) it would be high voltage DC because DC can be efficiently converted to lower voltages and the most efficient equipment runs on DC. This sources of hum would be eliminated and the hazard of AC in the home.
    Fun fact: the reason Edison was dead set against AC wasn't because DC is in any way superior. It was because he had only a high school education, and couldn't understand the complex math involved with AC power.
    "Well my son, life is like a beanstalk, isn't it?"--Dalai Lama

  3. #2628
    Member chalkpie's Avatar
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    https://soundstagehifi.com/index.php...c-sb-turntable

    Here is my TT Trane. It doesn't have auto return, but its a magnificent piece of audio. I have a Ortofon Quintet Red MC cartridge which requires a phono stage/preamp that can handle a low output moving coil, but its so worth it. On a beautifully recorded LP, this is my ultimate musical experience. My next upgrade will be a more expensive cart, maybe a Quintet Bronze or a Hana SL MC. Money talks.

  4. #2629
    cunning linguist 3LockBox's Avatar
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    Quote Originally Posted by Trane View Post
    Not sure this is the right place, but I'm looking to replace my Rotel 3000 (keeps breaking down)
    Could you explain "breaking down"? I'm stupefied at the prospect of spending 'that kind of money' on a product that's supposed to be the reason why you spend 'that kind of money', i.e. "you get what you pay for". It must sound AWESOME enough to tolerate unreliability I guess.

  5. #2630
    Member chalkpie's Avatar
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    My Rotel RCD 951 is 20+ years old and is still amazing. HDCD equipped too. The tray doesn't always open on the first try, but it eventually does. Killer cd player, and I'll be quite bummed when she goes.

  6. #2631
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by chalkpie View Post
    My Rotel RCD 951 is 20+ years old and is still amazing. HDCD equipped too. The tray doesn't always open on the first try, but it eventually does. Killer cd player, and I'll be quite bummed when she goes.
    Another 'new' second hand or spareparts
    https://www.hifishark.com/search?q=Rotel+RCD+951

  7. #2632
    Member chalkpie's Avatar
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    Quote Originally Posted by Zeuhlmate View Post
    Another 'new' second hand or spareparts
    https://www.hifishark.com/search?q=Rotel+RCD+951
    Cheers. Its one of those things....is it worth repairing or just get a new player. It sounds so damn good that I see no reason to part with it, and would contemplate a repair if needed. The other thought would be an Audiolab transport and Schiit Bifrost DAC, but that combo would run $1300.

  8. #2633
    Member Garyhead's Avatar
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    While not "Audiophile" yet....MIT researchers have developed a loudspeaker that could have many uses:

    https://news.mit.edu/2022/low-power-...udspeaker-0426
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  9. #2634
    Member Zeuhlmate's Avatar
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    Cables - anyone?

    Change of cables can do small miracles to enhance the sound of your hifi.
    They are not cheap (buy them seond hand), but it surprised me how much more I got out of my system.

  10. #2635
    Man of repute progmatist's Avatar
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    ^^ Or simply make sure all speaker wire connections are good and tight. That too can make a world of difference.
    "Well my son, life is like a beanstalk, isn't it?"--Dalai Lama

  11. #2636
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by progmatist View Post
    ^^ Or simply make sure all speaker wire connections are good and tight. That too can make a world of difference.
    Yes, goes whithout saying.
    I changed from Van den Hul Magnum ( thick silver speaker cables) and Silver Sonix Air Matrix (signal cables) to Nordost Cables Red Dawn (speaker) Nordost Heimdal 2 (signal) and got so many more details, 3D-effect, and microdynamics I thought would have required new loudspeakers or amp to get. Actually I biwire the speakers with Nordost and Tellurium Q silver at the bottom end.
    Still not cheap, but much cheaper than buying a new amp or speakers.

    I borrowed them at first, but the result was overwhelming, so I had to ...

  12. #2637
    That's Mr. to you, Sir!! Trane's Avatar
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    ^^^
    Haven't got to the bi-wiring yet (the extra cables are bought, though), because if my speakers are designed for it (two pair of connectorss), it's not the case of my amps.


    Quote Originally Posted by progmatist View Post
    ^^ Or simply make sure all speaker wire connections are good and tight. That too can make a world of difference.

    Also make sure that the red and white connectors are connected togethernetween amp & speakers. This may mean that you'll have to mark one of the wire of the cable on both ends. This is also valid between different elements of the hi-fi chain (if only to preserve the stereo effects correctly - as originally designed by the engineer), even before speaker of speaker cables. The quality/nature of cables & good connections between the elements also have their importance.
    my music collection increased tenfolds when I switched from drug-addicts to complete nutcases.

  13. #2638
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by Trane View Post
    ^^^
    Haven't got to the bi-wiring yet (the extra cables are bought, though), because if my speakers are designed for it (two pair of connectorss), it's not the case of my amps.
    You can terminate the cables with spades (Like this or similar https://www.av.com/Accessories/QED-S...es-4-Pack/4ARI)
    Quote Originally Posted by Trane View Post


    Also make sure that the red and white connectors are connected togethernetween amp & speakers. This may mean that you'll have to mark one of the wire of the cable on both ends. This is also valid between different elements of the hi-fi chain (if only to preserve the stereo effects correctly - as originally designed by the engineer), even before speaker of speaker cables. The quality/nature of cables & good connections between the elements also have their importance.
    If you miss this. You will counter phase the signals, get a very spacey sound and the bass will almost dissappear.
    Last edited by Zeuhlmate; 04-28-2022 at 07:01 AM.

  14. #2639
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    You guys can have fun with your cables. I’ll just use my high resolution microphone based calibration for the whole system including the room.
    “I’m not giving in an inch to fear” David Crosby

  15. #2640
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by Firth View Post
    You guys can have fun with your cables. I’ll just use my high resolution microphone based calibration for the whole system including the room.
    We do. Tweaking the old school gear is half the enjoyment...

  16. #2641
    Parrots ripped my flesh Dave (in MA)'s Avatar
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    Quote Originally Posted by Trane View Post
    Also make sure that the red and white connectors are connected togethernetween amp & speakers. This may mean that you'll have to mark one of the wire of the cable on both ends. This is also valid between different elements of the hi-fi chain (if only to preserve the stereo effects correctly - as originally designed by the engineer), even before speaker of speaker cables. The quality/nature of cables & good connections between the elements also have their importance.
    Or do an out of phase rear speaker intentionally as in Eno's el cheapo surround system:

    https://preview.redd.it/b6egq8p8sak1...=webp&5a404c2d

  17. #2642
    Member chalkpie's Avatar
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    Quote Originally Posted by Firth View Post
    You guys can have fun with your cables. I’ll just use my high resolution microphone based calibration for the whole system including the room.
    Wow, sounds amazing. Actually, no it doesn't.

  18. #2643
    Member Zeuhlmate's Avatar
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    Quote Originally Posted by Dave (in MA) View Post
    Or do an out of phase rear speaker intentionally as in Eno's el cheapo surround system:

    https://preview.redd.it/b6egq8p8sak1...=webp&5a404c2d
    B&O sold a box that did this.
    I have it somewhere, it was great when I was young - poor mans Quadraphonic sound.

    Last edited by Zeuhlmate; 04-28-2022 at 06:55 AM.

  19. #2644
    Member Firth's Avatar
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    Quote Originally Posted by chalkpie View Post
    Wow, sounds amazing. Actually, no it doesn't.
    Arrogant opinion, no observations.
    “I’m not giving in an inch to fear” David Crosby

  20. #2645
    [QUOTE=Dave (in MA);1118333]Or do an out of phase rear speaker intentionally as in Eno's el cheapo surround system:



    I have a speaker in the ceiling that I wired like this. I use it mainly for listening to AM radio (sports).
    "Always ready with the ray of sunshine"

  21. #2646
    Parrots ripped my flesh Dave (in MA)'s Avatar
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    Has anybody ever tried to refoam their speakers? Is it something that a novice might be able to do?

  22. #2647
    Member Firth's Avatar
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    Quote Originally Posted by Dave (in MA) View Post
    Has anybody ever tried to refoam their speakers? Is it something that a novice might be able to do?
    I used a kit to refoam my Snell speaker/woofer. Because those drives were unique I didn’t think replacing them with the unique crossover would work. However I now have a left refoamed driver and a right replaced driver. This sounds ok for a basement set of speakers to exercise with.
    “I’m not giving in an inch to fear” David Crosby

  23. #2648
    Member Zeuhlmate's Avatar
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    Snell speakers are 'particular' in that respect.
    Refoaming will alter the sound.
    I have the Snell A II and had to buy new woofers a couple of years ago.
    The foam was allready mostly gone, but my son had a party with his friends and smoked them.
    https://www.atomichifiandtv.com/snell-acoustics.html is the only place who have spareparts etc. for Snell speakers.

    Some speakers provide foam kits and it isn't that difficult to do it.

    btw - Snell (and refoaming is often mentioned) : https://www.facebook.com/groups/216875186099
    Last edited by Zeuhlmate; 05-04-2022 at 04:18 PM.

  24. #2649
    Parrots ripped my flesh Dave (in MA)'s Avatar
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    Thanks,
    I think I found a kit that matches. I'll see what I can manage.

  25. #2650
    Member Firth's Avatar
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    Quote Originally Posted by Zeuhlmate View Post
    Snell speakers are 'particular' in that respect.
    Refoaming will alter the sound.
    I have the Snell A II and had to buy new woofers a couple of years ago.
    The foam was allready mostly gone, but my son had a party with his friends and smoked them.
    https://www.atomichifiandtv.com/snell-acoustics.html is the only place who have spareparts etc. for Snell speakers.

    Some speakers provide foam kits and it isn't that difficult to do it.

    btw - Snell (and refoaming is often mentioned) : https://www.facebook.com/groups/216875186099
    These speakers Snell type E II. Snell had some pretty interesting designs in the day. I just read the Absolute Sound review of the type A. Where I think these were an improvement over the A, was the wideband woofer with port, front midrange to treble driver, and a rear firing very high range tweeter. Surely the midrange to treble driver by itself would beam the highs and certainly the cross over rolled off the high end of that driver. The reflections of the rear firing tweeter at the very high end would smooth out the spatial response. At 16 KHz the highs are basically random in phase and combine in power after reflection with the high end from the front driver. The mids and treble which matter for coherency were perfectly aligned since they came from the same driver.
    “I’m not giving in an inch to fear” David Crosby

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