resistor and polyswitch

ANWKLO
ANWKLO Posts: 173
edited June 2014 in Vintage Speakers
What are the purpose of these resistor and polyswitch for please?

attachment.php?attachmentid=40503&d=1243310086
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    What did the come out of(speaker type/model)? It does not look like anything I've come across,,but who knows? Is that original,or aftermarket,,sorry I'm not much help,but others will chime in,I;m sure. Good luck.

    The poly, is like a fuse for tweeter protection,,but your picture/application looks different,so I'm not sure of the application in this case.
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    It is inside the crossover from the original Monitor 5A with fuse, Peerless, MW6500 and 8" passive radiator:)
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    It looks like someone added that,, your's are fused IIRC,,so no poly was used,,do you have a pic of the actual x-over?.I would remove them if in fact they are aftermarket.Good luck and let us know what you do/happens.
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    Nobody add that. Here is the crossover:)

    attachment.php?attachmentid=40459&d=1243130436
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    is there a fuse on the binding post plate?
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    Certainly, a 1A fuse.:)
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  • zingo
    zingo Posts: 11,258
    edited June 2009
    Those are extra parts that someone added along the way. I would just desolder them and check to make sure all the stock parts are working correctly. Is that only added to one speakers?
    Jake
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    I am the first owner and sure that no modification of the x-over ever. I have checked one speaker only:)
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  • skrol
    skrol Posts: 3,375
    edited June 2009
    ANWKLO
    In an earlier post I thought you mentioned that one of the MW6500 was replaced with a MW6502 by a local dealer. Could they have added these components too? I am wondering if they could have been added to match impedance. Do both speakers have these?
    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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  • megasat16
    megasat16 Posts: 3,521
    edited June 2009
    That seems like a poly cap in series with the resistor for high pass X-over network for the tweeter. I don't think it's a Polyswitch which is different from Poly capacitor and functions differently.
    Trying out Different Audio Cables is a Religious Affair. You don't discuss it with anyone. :redface::biggrin:
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    skrol wrote: »
    ANWKLO
    In an earlier post I thought you mentioned that one of the MW6500 was replaced with a MW6502 by a local dealer. Could they have added these components too? I am wondering if they could have been added to match impedance. Do both speakers have these?


    I was there watching the technician to replace the MW6500 with MW6502. No parts were added. Just checked another speaker, also has resistor and polyswitch:)
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  • ben62670
    ben62670 Posts: 15,969
    edited June 2009
    That is not stock. Sorry. PDF's are posted here.
    http://www.polkaudio.com/forums/showthread.php?t=38755
    The resitor would have lowered the impeadance of the speaker.
    Ben
    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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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    Again,, it does not appear to be stock,, I did not know that polk used the screw/nuts to attach the crossover to the b/p plate,,IIRC they used "standoffs". Is the OP the "original owner of these speakers"? If not,,it sure appears that someone has been in there previously.
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    ben62670 wrote: »
    That is not stock. Sorry. PDF's are posted here.
    http://www.polkaudio.com/forums/showthread.php?t=38755
    The resitor would have lowered the impeadance of the speaker.
    Ben



    I am idiot for the schematic reading. Is the 2.7 ohms resistor used correctly:confused:
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  • ben62670
    ben62670 Posts: 15,969
    edited June 2009
    I certainly would not say your an idiot. I would do a little research on what you have there and mod it appropriately. There are plenty of folks to help you out here.
    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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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    george daniel wrote: »
    Again,, it does not appear to be stock,, I did not know that polk used the screw/nuts to attach the crossover to the b/p plate,,IIRC they used "standoffs". Is the OP the "original owner of these speakers"? If not,,it sure appears that someone has been in there previously.


    What is OP stands for:confused:
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  • ben62670
    ben62670 Posts: 15,969
    edited June 2009
    original poster;)
    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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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    ben62670 wrote: »
    I certainly would not say your an idiot. I would do a little research on what you have there and mod it appropriately. There are plenty of folks to help you out here.


    Many thanks:)
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  • ben62670
    ben62670 Posts: 15,969
    edited June 2009
    I am pretty much done for the evening, but I, and many others can help to rectify the situation in short time. Stick around:)
    Ben
    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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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    ben62670 wrote: »
    original poster;)


    Of course:)
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    I think what Ben and myself are saying,is that it appears that someone else has been inside those speakers before you,,hence the question,of are you the original owner. If not,,it might be a good idea to remove the resistor ,etc,and see how they sound. Good luck.
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    george daniel wrote: »
    I think what Ben and myself are saying,is that it appears that someone else has been inside those speakers before you,,hence the question,of are you the original owner. If not,,it might be a good idea to remove the resistor ,etc,and see how they sound. Good luck.


    I am the original owner and bought them from HiFi shop:)
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    So, they were new when you purchased them? Those are 25+ year old speakers.I'm not disputing your statement,,but I have never seen a resistor and poly on that speaker,and I own a pair as well.The mystery continues.
    JC approves....he told me so. (F-1 nut)
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  • F1nut
    F1nut Posts: 50,554
    edited June 2009
    ANWKLO, as Megasat16 stated, that is NOT a polyswitch, it's a capacitor in series with a resistor.

    I don't know a whole lot about that model, but since you bought them new, they must have come from the factory that way. Looks like the factory decided a little tweak was in order. Simple as that.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    george daniel wrote: »
    So, they were new when you purchased them? Those are 25+ year old speakers.I'm not disputing your statement,,but I have never seen a resistor and poly on that speaker,and I own a pair as well.The mystery continues.

    I just finished a search,, and it's a capacitor(film?) and not a polyswitch.
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    F1nut wrote: »
    ANWKLO, as Megasat16 stated, that is NOT a polyswitch, it's a capacitor in series with a resistor.

    I don't know a whole lot about that model, but since you bought them new, they must have come from the factory that way. Looks like the factory decided a little tweak was in order. Simple as that.


    Then, does it match with the schematic of Monitor 5:confused:
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    ANWKLO wrote: »
    Then, does it match with the schematic of Monitor 5:confused:

    not that I can tell.
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    george daniel wrote: »
    So, they were new when you purchased them?


    Correct:)
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  • george daniel
    george daniel Posts: 12,096
    edited June 2009
    Well,,then,,like Jesse said,,must have been a "tweak" that Polk used/performed,,you certainly seem to have a very unique model/version. Also,,that is a capacitor and not a polyswitch(since you have a fuse).How do they sound?
    JC approves....he told me so. (F-1 nut)
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  • ANWKLO
    ANWKLO Posts: 173
    edited June 2009
    george daniel wrote: »
    Well,,then,,like Jesse said,,must have been a "tweak" that Polk used/performed,,you certainly seem to have a very unique model/version. Also,,that is a capacitor and not a polyswitch(since you have a fuse).How do they sound?


    Am I lucky or not:confused: They sound airy , bright and tight:)
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