Help with 2.3tl inside left sp not working

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jbail2011
jbail2011 Posts: 102
in Vintage Speakers
Hi all. I could use some help fixing my speakers. I bought this pair of SDA SRS 2.3tl speakers and am really excited about them. I noticed the right side dominates the sound stage. It seems the 4 speakers on the inside side of the left speaker are not working. I pulled each driver to be sure they were connected and they were. The SDA drivers are working.

I removed the passive radiator and found the caps on the crossover are loose and hanging. I pulled the crossover to look for any obvious issue and, other than the hanging caps, all I can see is green powder shown in the picture below.

Anyone have any idea why these aren’t working? 7bew0i9gh0jz.jpeg
gmxydwagy1aj.jpeg
9odzubqfug8j.jpeg
6amidriyp8o7.jpeg
6aoo6dn81c7o.jpeg
Polk Audio SDA SRS 2.3 TL
Polk Audio SDA 2B TL mod
Carver M 1.0 MK2 Opt 2 x2
Carver CT Seven Preamp
Bluesound Node 2i
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  • F1nut
    F1nut Posts: 49,802
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    What a disaster!

    The green parts are resistors. I suspect the powder means that resistor either got really hot or is fully cooked, but they are in the high frequency circuit.

    Since you stated some or all of the caps are hanging off you likely have a broken solder joint or even a broken cap lead.

    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."

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  • VR3
    VR3 Posts: 28,040
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    That poor circuit board! That's alot of weight just hanging around! Plus never install caps on resistors or smoother resistors.

    Those resistors actually come that way, looks like mundorf mox, the little white powder substance that is.

    If you plan to run that build, that way, you need to make a separate board to secure the caps to and then run the wires to the circuit board.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • monepolk
    monepolk Posts: 1,141
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    Since you pulled the crossovers out did you try switching them to see if the issue follows?
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  • jbail2011
    jbail2011 Posts: 102
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    monepolk wrote: »
    Since you pulled the crossovers out did you try switching them to see if the issue follows?

    That’s a great suggestion! Thank you

    F1nut wrote: »
    What a disaster!

    The green parts are resistors. I suspect the powder means that resistor either got really hot or is fully cooked, but they are in the high frequency circuit.

    Since you stated some or all of the caps are hanging off you likely have a broken solder joint or even a broken cap lead.

    I always appreciate your feedback f1. I will go over the board the best I can. I’m on uncharted territory. I’ll need to learn how to do this.
    VR3 wrote: »
    That poor circuit board! That's alot of weight just hanging around! Plus never install caps on resistors or smoother resistors.

    Those resistors actually come that way, looks like mundorf mox, the little white powder substance that is.

    If you plan to run that build, that way, you need to make a separate board to secure the caps to and then run the wires to the circuit board.

    Thank you vr3. Can I extend the wires for the caps to bundle them together off the board?
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • pitdogg2
    pitdogg2 Posts: 24,578
    edited June 2021
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    jbail2011 wrote: »

    Thank you vr3. Can I extend the wires for the caps to bundle them together off the board?

    yes you can. Twist together and solder
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  • VR3
    VR3 Posts: 28,040
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    Yes, you can add leads to the caps, keep it as short as possible but still with some slack built in.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,040
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    Also I would highly recommend changing the resistors to Duelund, Path Audio or the newer Mundorf series with the heat sinks, those CMR caps will drastically out perform a MOX resistor.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • jbail2011
    jbail2011 Posts: 102
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    VR3 wrote: »
    Also I would highly recommend changing the resistors to Duelund, Path Audio or the newer Mundorf series with the heat sinks, those CMR caps will drastically out perform a MOX resistor.

    Noted thank you!

    pitdogg2 wrote: »
    jbail2011 wrote: »

    Thank you vr3. Can I extend the wires for the caps to bundle them together off the board?

    yes you can. Twist together and solder

    Noted thank you!
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • jbail2011
    jbail2011 Posts: 102
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    The right crossover is in much better shape. 2uqwk6mvkzem.jpeg

    They have different resistors and the caps are stacked in a different order… 🤔
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • F1nut
    F1nut Posts: 49,802
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    Those caps are way too big for the board. Should have never been done.

    You need to use the same resistors in both crossovers and that inductor should not be hanging off the edge. Somebody needs to turn in their soldering iron.
    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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  • jbail2011
    jbail2011 Posts: 102
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    F1nut wrote: »
    Those caps are way too big for the board. Should have never been done.

    You need to use the same resistors in both crossovers and that inductor should not be hanging off the edge. Somebody needs to turn in their soldering iron.

    I’m at a loss as to what to do. How do I accommodate these caps? Is there a better board I can use to rebuild?
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • nooshinjohn
    nooshinjohn Posts: 25,100
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    I would dump anything electrical that is made in Britain, but that's just me.
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
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  • VR3
    VR3 Posts: 28,040
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    The cmr caps are amazing, but they need a good point to point network versus Stacked like a mountain on a circuit board
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • jbail2011
    jbail2011 Posts: 102
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    I think I found the problem. I found this when I was touching up the solder. pkd8myed6myi.jpeg
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • jbail2011
    jbail2011 Posts: 102
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    nooshinjohn wrote: »
    I would dump anything electrical that is made in Britain, but that's just me.

    I have a triumph spitfire. I am aware 😂
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • F1nut
    F1nut Posts: 49,802
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    jbail2011 wrote: »
    I think I found the problem. I found this when I was touching up the solder. pkd8myed6myi.jpeg

    That is definitely a problem. Whomever did those crossovers should hang their head in shame.
    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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  • F1nut
    F1nut Posts: 49,802
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    nooshinjohn wrote: »
    I would dump anything electrical that is made in Britain, but that's just me.

    Clarity makes excellent products.
    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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  • jbail2011
    jbail2011 Posts: 102
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    This fixed the problem and the speakers sound great! Now I need to match the resistors but more importantly fix the capacitor situation. Can someone please tell me specifically what I need to do? Is there a certain board I need to buy? Is there a way to bundle with zip ties and extensions? What’s the best practice here?
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • audioluvr
    audioluvr Posts: 5,437
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    I would just match what was done with the right crossover only secure them big caps with zip ties. You can drill holes in the board as long as you don't damage any traces. Also most here like to install the resistors on the back side of the board if possible to keep their heat away from the caps.
    Gustard X26 Pro DAC
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    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

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  • cincycat13
    cincycat13 Posts: 882
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    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.
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  • txcoastal1
    txcoastal1 Posts: 13,132
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    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    I agree...someone may have stashed a pair
    Open a:
    WTB-Gimpod Boards

    Good luck
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC

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  • jbail2011
    jbail2011 Posts: 102
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    txcoastal1 wrote: »
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    I agree...someone may have stashed a pair
    Open a:
    WTB-Gimpod Boards

    Good luck
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    These are gimpod boards.
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • pitdogg2
    pitdogg2 Posts: 24,578
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    jbail2011 wrote: »
    txcoastal1 wrote: »
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    I agree...someone may have stashed a pair
    Open a:
    WTB-Gimpod Boards

    Good luck
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    These are gimpod boards.

    Agree they are, the MASSIVE 400V caps make it look tiny....

    Do they make the CMR's in 200v ? I personally have not seen any but I must admit I have not put effort into finding them.
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  • joebass3
    joebass3 Posts: 252
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    pitdogg2 wrote: »
    jbail2011 wrote: »
    txcoastal1 wrote: »
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    I agree...someone may have stashed a pair
    Open a:
    WTB-Gimpod Boards

    Good luck
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    These are gimpod boards.

    Agree they are, the MASSIVE 400V caps make it look tiny....

    Do they make the CMR's in 200v ? I personally have not seen any but I must admit I have not put effort into finding them.

    ClarityCap makes the CSA line which are 250V. Good capacitors that are sized more appropriately.
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  • pitdogg2
    pitdogg2 Posts: 24,578
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    joebass3 wrote: »
    pitdogg2 wrote: »
    jbail2011 wrote: »
    txcoastal1 wrote: »
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    I agree...someone may have stashed a pair
    Open a:
    WTB-Gimpod Boards

    Good luck
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    These are gimpod boards.

    Agree they are, the MASSIVE 400V caps make it look tiny....

    Do they make the CMR's in 200v ? I personally have not seen any but I must admit I have not put effort into finding them.

    ClarityCap makes the CSA line which are 250V. Good capacitors that are sized more appropriately.

    Yes I'm familiar with the lower line caps.
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  • jbail2011
    jbail2011 Posts: 102
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    pitdogg2 wrote: »
    jbail2011 wrote: »
    txcoastal1 wrote: »
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    I agree...someone may have stashed a pair
    Open a:
    WTB-Gimpod Boards

    Good luck
    cincycat13 wrote: »
    https://forum.polkaudio.com/discussion/118701/gimpod-sda-boards-for-2-3

    i do not think gimpod boards are still available. you may search and see if you can find a pair.

    These are gimpod boards.

    Agree they are, the MASSIVE 400V caps make it look tiny....

    Do they make the CMR's in 200v ? I personally have not seen any but I must admit I have not put effort into finding them.

    What am I supposed to do with these caps to straighten this out?
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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  • pitdogg2
    pitdogg2 Posts: 24,578
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    You have some of the best caps on the market, I'd find a way to extend the leads, zip tie to a board if that's what it takes. Where do you live?
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  • F1nut
    F1nut Posts: 49,802
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    jbail2011 wrote: »
    What am I supposed to do with these caps to straighten this out?

    You can do as Ivan suggests or build point to point crossovers. Here's a few pics to give you an idea.
    sq5umj2o6krb.jpg
    elb2495smygx.jpg

    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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  • txcoastal1
    txcoastal1 Posts: 13,132
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    Or you can create a stack board on top of Gimpod's board like Trey has done for some of his projects
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC

    erat interfectorem cesar et **** dictatorem dicere a
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  • jbail2011
    jbail2011 Posts: 102
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    pitdogg2 wrote: »
    You have some of the best caps on the market, I'd find a way to extend the leads, zip tie to a board if that's what it takes. Where do you live?

    I’m in Charlotte, NC



    F1nut wrote: »
    jbail2011 wrote: »
    What am I supposed to do with these caps to straighten this out?

    You can do as Ivan suggests or build point to point crossovers. Here's a few pics to give you an idea.

    Thank you very much for the pics. Great idea!
    Polk Audio SDA SRS 2.3 TL
    Polk Audio SDA 2B TL mod
    Carver M 1.0 MK2 Opt 2 x2
    Carver CT Seven Preamp
    Bluesound Node 2i
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