Do these Really work!!!

jimmydep
jimmydep Posts: 1,305
edited September 2009 in DIY, Mods & Tweaks
While surfing I came across these snap on RF noise filters.

Has anyone tried these out?? What are some of the possible applications??


http://cgi.ebay.com/TDK-Snap-On-RF-EMI-Noise-Filter-Ferrite-Core-9mm-x-10_W0QQitemZ120463020295QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0c27d107&_trksid=p3911.c0.m14





Jimmy
Post edited by jimmydep on
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  • kawizx9r
    kawizx9r Posts: 5,150
    edited September 2009
    jimmydep wrote: »
    While surfing I came across these snap on RF noise filters.

    Has anyone tried these out?? What are some of the possible applications??


    http://cgi.ebay.com/TDK-Snap-On-RF-EMI-Noise-Filter-Ferrite-Core-9mm-x-10_W0QQitemZ120463020295QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0c27d107&_trksid=p3911.c0.m14





    Jimmy

    I've seen those, and alot of people swear on them. The majority of the time they're used on power cords, but have multiple applications as well. They're found everywhere, even on P.E./MP and at your local rat shack. When used on interconnect cables or power cords, it's usually near the component end where said-cable is near a bunch of other cables/etc.
    Truck setup
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    heiney9 wrote: »
    Any clue how to use the internet? Found it in about 10 sec.
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  • hearingimpared
    hearingimpared Posts: 21,136
    edited September 2009
    I use a similar product on all my power cords. Whether they work or not . . . who knows.
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  • treitz3
    treitz3 Posts: 19,945
    edited September 2009
    It depends on the situation as to whether or not they make an audible difference. I use them and in some instances they are really effective. In other instances I notice nothing.

    When they are effective, you will notice a change by moving them up and down the cable. Sometimes just a 1/4 inch will make an audible difference. Place them at the input side of the cables. The best distances I have found are anywhere from 2-4 inches away from the end of the cable, YMMV.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • treitz3
    treitz3 Posts: 19,945
    edited September 2009
    Oh, and $14.50 is a ridiculous price for those.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • treitz3
    treitz3 Posts: 19,945
    edited September 2009
    Here you go......

    http://www.parts-express.com/wizards/searchResults.cfm?searchFilter=ferrite%20core%20noise%20suppressor
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • tcrossma
    tcrossma Posts: 1,301
    edited September 2009
    That Ebay listing appears to be for Qty: 10
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH
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  • treitz3
    treitz3 Posts: 19,945
    edited September 2009
    Ah, my bad. I thought it was for one.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • zingo
    zingo Posts: 11,258
    edited September 2009
    They can make the biggest difference when shielding your cables from HF stuff like HAM radios, etc. But they can also make a difference if your place has some bleedover radiation or a strong signal from something near by.
    Jake
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  • jimmydep
    jimmydep Posts: 1,305
    edited September 2009
    I didn't think they were very expensive, especially if they improve the sound quality.

    So if I put them on my interconnects I should expect to see a Difference?
    Has anyone tried them on speaker cables?



    Jimmy
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  • ben62670
    ben62670 Posts: 15,969
    edited September 2009
    Speaker cables are not nearly as subject to RFI/EMI as IC's. Also they would go near the amp end, and not the source. I would presume that you would want to protect the most cable you could. Also I have no idea if they would degrade the audio signal. I have only seen them on power cords. They cost much less than a $1 for companies who buy in bulk, and If they worked you would most likely have seen them by now, but who knows they may not be detrimental to the signal. For a couple dollars it may be worth trying if you are having noise problems.

    EDIT: A little side note. I don't see them on any of the cables he is selling;)
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • treitz3
    treitz3 Posts: 19,945
    edited September 2009
    jimmydep wrote: »
    I didn't think they were very expensive, especially if they improve the sound quality.
    They don't improve the sound quality at all. They remove unwanted noise in applicable situations.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • hearingimpared
    hearingimpared Posts: 21,136
    edited September 2009
    treitz3 wrote: »
    They don't improve the sound quality at all. They remove unwanted noise in applicable situations.

    If they remove unwanted noise in applicable situations wouldn't it make sense that they improve the sound quality?:confused:
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  • jimmydep
    jimmydep Posts: 1,305
    edited September 2009
    ben62670 wrote: »
    EDIT: A little side note. I don't see them on any of the cables he is selling;)

    I did find a set of speaker cables that the seller uses them on .



    http://cgi.ebay.com/Western-Electric-14GA-Pure-Copper-Speaker-Cable-2M-x2_W0QQitemZ120467213537QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0c67cce1&_trksid=p4634.c0.m14.l1262


    Jimmy
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  • ben62670
    ben62670 Posts: 15,969
    edited September 2009
    If they remove noise from AC then it makes me wonder if they remove any musical material too. Sounds like a candyliquor upgrade. He now has red letters.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • skrol
    skrol Posts: 3,437
    edited September 2009
    ben62670 wrote: »
    If they remove noise from AC then it makes me wonder if they remove any musical material too. Sounds like a candyliquor upgrade. He now has red letters.

    I was thinking the same thing. I usually see these things on DC power cords (ie. laptop computers).
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • ben62670
    ben62670 Posts: 15,969
    edited September 2009
    SAL they work on power cords, but do you want something that filters unwanted frequencies from power on a low voltage wide bandwidth analog signal? I wish I had a silly scope. I would like to check the numbers and put my ears on it, but it really doesn't sound like a good idea. Again all the cable companies out there, and none use metal ferrite chocks. An air filter filters air, but I am not going to filter pond water with one and drink it even though it is a filter.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • treitz3
    treitz3 Posts: 19,945
    edited September 2009
    hearingimpared wrote: »
    If they remove unwanted noise in applicable situations wouldn't it make sense that they improve the sound quality?:confused:
    To the average consumer, this would be the case. That said, they still do not improve the sound.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • jimmydep
    jimmydep Posts: 1,305
    edited September 2009
    It seems like no one is really sure if these will improve, degrade, or have no effect on the sound....I smell a DK review coming.



    Jimmy
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