Ferrite cylinder things

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Comments

  • BlueFoxBlueFox Posts: 9,169
    tonyb wrote: »
    CoolJazz wrote: »
    Also, probably better get used to them with all the junk out there on power lines today. Like the Obama bulbs, the LED lights, the switch mode power supplies hanging on everything, etc....
    CJ

    Eh...like already stated, if you have a well built power cord, in audio applications anyway, you shouldn't need these things.

    That would be because a well built power cord has filtering built-in to it. This issue is turning into a cable debate. :)

    At the end of the day, in audio at least, everything has an effect on the sound. Whether it is good or bad is up to the individual. In regard to ferrite cores on cables I think the fact that there doesn't seem to be much of a market for these items speaks volumes as to their effectiveness in the audio realm.

    Bud

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    Three 20 amp circuits.
  • pitdogg2pitdogg2 Posts: 7,137
    they were used for a while Bud then they went away. IIRC on some cables they would drop the ohms way down and that affected the sound. Or was it too high I remeber something about ohms it was in one of the audio mags way back when.
  • CoolJazzCoolJazz Posts: 495
    Jstas wrote: »
    First off, forgive me for using a descriptive term that may not have been 100% accurate but was used to describe something complex in simple terms so that one does not need an engineering degree to understand what I am saying. Just because it's a term you are not familiar with in relation to the topic at hand does not make it incorrect, though. EM fields, just like actual power transmission, can surge. It's how EMPs work.

    Secondly, since you don't believe me, here, read about it yourself instead of just guessing about complex topics.

    http://computer.howstuffworks.com/question352.htm
    https://www.quora.com/What-purpose-does-the-small-cylindrical-module-near-the-end-of-my-laptop-charger-cable-serve
    http://gizmodo.com/5871162/what-do-those-mysterious-lumps-on-your-cables-do
    https://superuser.com/questions/217772/what-is-that-cylinder-on-cables
    http://www.slate.com/blogs/browbeat/2012/11/01/cylinder_or_box_on_computer_cords_what_s_it_for.html

    There's plenty more links all explaining it in simple terms from people that aren't me.

    http://bfy.tw/CLNc

    It's 2017. The entirety of human knowledge is accessible from a little glowing box in your pocket, 24/7. Ignorance is not an excuse now more than ever.

    Thank you for your concern for my ignorance. Greatly appreciated.

    I looked at each of those links to lift my knowledge and they all seem to agree exactly with what I said as far as they go anyway. I see no mention of "surge".

    Again, they are simply a low pass filter. That's what they do. Sorry if that's technical.

    CJ
    A so called science type proudly says... "I do realize that I would fool myself all the time, about listening conclusions and many other observations, if I did listen before buying. That’s why I don’t, I bought all of my current gear based on technical parameters alone, such as specs and measurements."
  • mhardy6647mhardy6647 Posts: 14,400
    lightman1 wrote: »
    ybislal3ml9w.jpg
    mhardy6647 wrote: »
    superstrings?

    8273167832_0b344d37b2_b.jpg
    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

  • afterburntafterburnt Posts: 3,243
    Why are they on this Oppo HDMI cable?
    Parlor: Yamaha RX-A2030*Parasound Halo P5*Parasound Halo A-31*Parasound 2250v2*Emotiva XPA-200 Gen1*LSiM707 Fronts*LSiM706c Center*LSiM702f/x Surrounds*Monitor70 Series II Rears*Monitor40 Series II Presence*SVS PB2000 Sub X2*OPPO BDP-103D*Sony PS3*Samsung BD-H5900 3D Blu-Ray*Samsung-55" LED 1080p Smart 3D HDTV UN55H7150AFXZA*TEAC TN-300*Wireworld Solstice cables*Blue Jeans Cable LC-1's IC's*

    Dungeon: Auralic Aries Mini*Dayens Ampino Preamp*Dayens Ampino Monoblocks*Usher N-6361*Wireworld Oasis cables*Wireworld Oasis IC's*IFI nano IDSD* Cambridge CXU*

    Panamax MR5100*Panamax M8-AV-PRO*Furman PST-2+6

    Head gear: Sennheiser HD 558*Audio-Technica ATH-M40x*Sennheiser HD 598 Cs*Audio-Technica ATH-MSR7*Philips SHP9500S*

    Hello Kitty boombox

    Spares: Yamaha RX-A1040*Emotiva XPA-1L Gen2 X2*Emotiva XPA-3 Gen2*CSiA6 Center*Monitor40 Series II*SVS PB1000 Sub*Sony BDPS6500 Blu-ray player*POS 37" LCD*Douglas Connection Furez 12 AWG 2 Conductor*Blue Jeans Cable LC-1's IC's*


    Self Control is over rated.
  • DSkipDSkip Posts: 13,222
    My guess is its cheaper than twisting the wires in a geometry.
    audiothesis.com/

    Speakers: Usher: CP-6311, Be-10, T-515; Rosso Fiorentino: Elba, Fiesole, Volterra; Polk: T50, Signature S60, S55, S35, S30, S20, S15, RTA 15tl, Sonner Audio Allegro Unum, iFi LS3.5
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  • CoolJazzCoolJazz Posts: 495
    A so called science type proudly says... "I do realize that I would fool myself all the time, about listening conclusions and many other observations, if I did listen before buying. That’s why I don’t, I bought all of my current gear based on technical parameters alone, such as specs and measurements."
  • CoolJazzCoolJazz Posts: 495
    From the AudioSystemsGroup link....

    "How many times have you heard someone say, "ferrite beads don't work on this problem – I added one and nothing happened." In fact, they were simply below the threshold impedance needed in that particular circuit!"
    A so called science type proudly says... "I do realize that I would fool myself all the time, about listening conclusions and many other observations, if I did listen before buying. That’s why I don’t, I bought all of my current gear based on technical parameters alone, such as specs and measurements."
  • afterburntafterburnt Posts: 3,243
    Thanks for all of the replies, l am just gonna put em on my coat hangers.
    Parlor: Yamaha RX-A2030*Parasound Halo P5*Parasound Halo A-31*Parasound 2250v2*Emotiva XPA-200 Gen1*LSiM707 Fronts*LSiM706c Center*LSiM702f/x Surrounds*Monitor70 Series II Rears*Monitor40 Series II Presence*SVS PB2000 Sub X2*OPPO BDP-103D*Sony PS3*Samsung BD-H5900 3D Blu-Ray*Samsung-55" LED 1080p Smart 3D HDTV UN55H7150AFXZA*TEAC TN-300*Wireworld Solstice cables*Blue Jeans Cable LC-1's IC's*

    Dungeon: Auralic Aries Mini*Dayens Ampino Preamp*Dayens Ampino Monoblocks*Usher N-6361*Wireworld Oasis cables*Wireworld Oasis IC's*IFI nano IDSD* Cambridge CXU*

    Panamax MR5100*Panamax M8-AV-PRO*Furman PST-2+6

    Head gear: Sennheiser HD 558*Audio-Technica ATH-M40x*Sennheiser HD 598 Cs*Audio-Technica ATH-MSR7*Philips SHP9500S*

    Hello Kitty boombox

    Spares: Yamaha RX-A1040*Emotiva XPA-1L Gen2 X2*Emotiva XPA-3 Gen2*CSiA6 Center*Monitor40 Series II*SVS PB1000 Sub*Sony BDPS6500 Blu-ray player*POS 37" LCD*Douglas Connection Furez 12 AWG 2 Conductor*Blue Jeans Cable LC-1's IC's*


    Self Control is over rated.
  • mdaudioguymdaudioguy Posts: 3,945
    Jstas wrote: »
    OK, time to put the "opinions" aside here and listen to real science.
    ...
    And I have seen actual effects on stuff like portable generators pop a circuit breaker from the surge the chokes are meant to protect from.

    Dude, I'm between semesters right now (last one ended 17 years ago), so I'm bookmarking this until my brain refreshes... maybe around mid-September, I'll come back and study this. I've always wondered about those things... just not so much at the moment! ;)
    7.1 - polk RTi10 x 3 (LCR) : FXi3 x 2 : RTi4 x 4 : Sunfire SDS-12 : Yamaha Aventage RX-A2040 : Adcom GFA-7500 : Squeezebox Touch : DIRECTV : Roku SE : Panasonic PT-AX200U PJ @ 120"
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  • BlueBirdMusicBlueBirdMusic Registered User Posts: 240
    Here's one for this thread.

    Ferrite-bead-2-610x457.jpg


  • nbrowsernbrowser Posts: 6,578
    Here's one for this thread.

    Ferrite-bead-2-610x457.jpg


    Perfect for chucking at the rookie of the shops head! :smiley:
    Living room: Samsung UN55KU7000 4K UHD HDR 55 inch TV, Marantz CD6004, Pro-Ject Debut Carbon, Parasound zPhono, Mac Mini, Oppo BDP-93, XBox One S 2Tb, Kenwood DPX792BH car deck for radio purposes, Marantz SR5010 AVR, Parasound HCA-1200II, Front SDA 2 modded with Larrys Rings and RD0-194-1 tweeters, Rear Onkyo SKF-4800 Towers, Center CSiA6, BOOM Tannoy TS2.12 Sub, Audioquest Evergreen interconnects just about everywhere except from AVR to amp, MIT Terminator 4, MIT AVT3 speaker cables with extra terminals covered up Monitor 5 Jr+ in the wings for a center channel.
  • jdjohnjdjohn Posts: 173
    Well, no one has mentioned RFI yet, except that a power cord can turn into a radio antenna. I have a Schiit Mani phono-pre, but I don't use because it picks up an FM transmitter that is a few miles away from my house. I put a ferrite choke on the power cord (looped it through twice), which helped, but still didn't eliminate the background FM entirely. This is actually a known issue with the Mani, but Schiit won't offer any solutions for it. Apparently they cheaped-out on the power supply (inadequate shielding). IIRC, the wallwart is actually AC, and the transformer to DC is inside the Mani...or something like that. Frankly, I wish they would get their Schiit together and offer, or at least recommend, a solution.
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