problem with polk audio dra 12

Hey. I bought a pair of speakers POLK AUDIO DRA 12. there was a problem with crossovers. Someone did not do a professional job with a soldering iron and now do not work tweeters. I ask you to send a diagram or photos of the correct crossover board.

Best Answers

  • fireserzhfireserzh Posts: 11
    Accepted Answer
    excellent. now everything is visible. Thank you
    :D
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Answers

  • F1nutF1nut Posts: 38,042
    edited September 17
    There is no such model. How about you post some photos of what you have.
    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."


  • on the crossover board it is written POLK AUDIO DRA 12 . what exactly is the model I do not know. I send photoszsqk6y3x9n7v.jpg
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  • F1nutF1nut Posts: 38,042
    edited September 17
    It clearly says RTA 12 on the crossover board, so your model is the RTA 12.

    In your 3rd and 4th photos it appears one lead on the fuse is broken. The cause is the previous owner over drove their amp resulting in enough heat to melt the solder joint.

    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."


  • I also ask you to send either a diagram or photos where it is seen how correctly it should be that I am corrected on my crossovers. here is another photonq5pdyl95plg.jpg
    jcbwddx3po4l.jpg
  • F1nutF1nut Posts: 38,042
    edited September 17
    You need to solder the leads back onto the fuse block.
    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."


  • delkaldelkal Posts: 42
    edited September 17
    I have blown a fuse or two in the day........but cranking it up till the solder melts sounds awesome! :D

    Wish I was there to hear it (his speakers, not mine)
  • thanks for answers . I need photos of the bottom of the crossover board with the correct location of the contacts so I can fix it on my own
  • pitdogg2pitdogg2 Posts: 7,532
    fireserzh wrote: »
    thanks for answers . I need photos of the bottom of the crossover board with the correct location of the contacts so I can fix it on my own

    Then you need someone else to do the work. You have two speakers correct? Do both have the same problem? If not then your picture is before your eyes. Each side of the fuse block should have a wire coming to it find the wire and resolder it back to the side without a wire. I'm pretty sure I'm looking at the disconnected wire in your pictures pull it up wrap to the block the flow solder to the joint.
    If this is something you can't do its ok to admit that but all the pictures in the world will not fix it.
    This is a very simple fix
  • Viking64Viking64 Posts: 285
    edited September 18
    See the wire on the right that comes up through the hole in the board and is soldered to the fuse block? You need to make the broken wire on the left that is just poking through the board look like the right side.

    dfhaf1r0tzcl.jpg
    Polk SDA SRS 2.3TL
    Silk Audio MS38SE Tube Amp
    Yamaha DSP A-1 AV Amp
    Panasonic TC-P65S2 Plasma TV
  • thanks for the photo. from the plug out three wires, black must be pierced through the hole in the board and soldered to the fuse contact? I understand correctly?
  • pitdogg2pitdogg2 Posts: 7,532
    It's your photo....
    LOL

    Look at the other speaker for conformation it really is THAT easy
  • Viking64Viking64 Posts: 285
    I have 1000 memes for this, but sadly none of them are in Cyrillic. :p
    Polk SDA SRS 2.3TL
    Silk Audio MS38SE Tube Amp
    Yamaha DSP A-1 AV Amp
    Panasonic TC-P65S2 Plasma TV
  • pitdogg2pitdogg2 Posts: 7,532
    Viking64 wrote: »
    I have 1000 memes for this, but sadly none of them are in Cyrillic. :p
    You noticed that to? License plate gave it away ;)
  • Viking64Viking64 Posts: 285
    pitdogg2 wrote: »
    You noticed that to? License plate gave it away ;)
    Exactly. :D

    Polk SDA SRS 2.3TL
    Silk Audio MS38SE Tube Amp
    Yamaha DSP A-1 AV Amp
    Panasonic TC-P65S2 Plasma TV
  • It looks like you have 3 holes in the passive on the right speaker that needs some attention also.
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  • Viking64Viking64 Posts: 285
    dkfreebird wrote: »
    It looks like you have 3 holes in the passive on the right speaker that needs some attention also.

    He is going to need photos of the passive on the right speaker that needs some attention with the correct location of the holes so he can fix it on his own. Thank you in advance. :p
    Polk SDA SRS 2.3TL
    Silk Audio MS38SE Tube Amp
    Yamaha DSP A-1 AV Amp
    Panasonic TC-P65S2 Plasma TV
  • F1nutF1nut Posts: 38,042
    dkfreebird wrote: »
    It looks like you have 3 holes in the passive on the right speaker that needs some attention also.

    If those puncture marks are limited to the outer layer the PR will not leak air.
    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."


  • about the passive membrane, I thought but for now I want to end with crossovers. not a professional soldering on both columns, so I can not compare how it should be properly done. spread more photos. From the bottom of the board under the fuse you can see that the piece of wire was soldered and closed straight. I'll clean it up. but I do not know which wire to solder to the second fuse contact. black wire from a three-core connector?c8udayj7vgng.jpg
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  • I apologize for my language, I write through a translator :) ;)
  • Viking64Viking64 Posts: 285
    It looks like someone bypassed the fuse on both crossovers. With a short blue wire on one and with a short white wire on the other. If this was done previous to when you made this thread, I would guess that the fuse block not being properly attached was not your issue. If this is something you did AFTER getting our advice....

    gnoxfnamejz7.jpg
    Polk SDA SRS 2.3TL
    Silk Audio MS38SE Tube Amp
    Yamaha DSP A-1 AV Amp
    Panasonic TC-P65S2 Plasma TV
  • I bought the speakers in this condition. they were packed. now I want to remove all traces of non-professional repair and do as it should be.
  • pitdogg2pitdogg2 Posts: 7,532
    fireserzh wrote: »
    I bought the speakers in this condition. they were packed. now I want to remove all traces of non-professional repair and do as it should be.

    And this is where we should of started.
  • pitdogg2pitdogg2 Posts: 7,532
    edited September 19
    Yes unless you have good quality high current amplification i would keep the fuse in the circuit. Most stereo/home theater receivers just do not have the amount of current needed for the RTA 12 speakers.

    Just my opinion
  • which amplifiers do you recommend? what do you think, 80 watts per channel will suffice? Now I have AKAI AM 2800 and the kit HITACHI HMA 7500+ HCA 7500.

  • F1nutF1nut Posts: 38,042
    Here are the schematics for the RTA 12 series.

    http://forum.polkaudio.com/discussion/comment/434476/#Comment_434476
    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."


  • FestYboyFestYboy Posts: 592
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  • send please the photo from the bottom of the fuse so you can see what and where soldered

  • txcoastal1txcoastal1 Posts: 8,155
    fireserzh wrote: »
    send please the photo from the bottom of the fuse so you can see what and where soldered

    The first 2 pics show the bottom solder points
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures, Simaudio 780D DAC
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    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers
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