Polk Audio SDA SRS 2 Crossover Modification Thread

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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    Getting there...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    Douglas Connection SDA cable!! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    ALL DONE! :)

    I am pretty proud of these bad boys!

    To give you an example of how awesome this all was, it had to go inside of THREE boxes ;)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Conradicles
    Conradicles Posts: 6,322
    edited February 2013
    Fantastic work VR3!!!
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    Thank you sir!! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • drumminman
    drumminman Posts: 3,396
    edited February 2013
    Very nice work Trey. Clean and neat - love the p to p wiring. Looks like a cost no object Xover rebuild - $400 in resistors alone! :eek:
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    Thanks man!!

    The resistors were not to bad, only $2.50 a piece
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    He is getting them installed! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • zarrdoss
    zarrdoss Posts: 2,562
    edited February 2013
    That is some damn nice work! some of the nicest I have seen, These do use a 130uf cap on the low end right?
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    Thank you sir! :)

    It is actually closer to 190uf I believe, they are beside the big inductor!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • zarrdoss
    zarrdoss Posts: 2,562
    edited February 2013
    Well a 130, 65 and two 34's right? A 130uf must be the size of a coke can!
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    I just used two 100uf since the 130 and 65 are in Parallel since they are the same values
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • zarrdoss
    zarrdoss Posts: 2,562
    edited February 2013
    I just looked at the schematic I wonder why Polk used a 65 and 130 wired in parallel? cost effectiveness probably?
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    On the stock one, the 130 is poly cap I believe with 20% tolerance... definitely strange
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • PolkieMan
    PolkieMan Posts: 2,446
    edited February 2013
    Clean and neat truly professional looking!:smile:
    POLK SDA 2.3 TLS BOUGHT NEW IN 1990, Gimpod/Sonic Caps/Mills RDO-198
    POLK CSI-A6 POLK MONITOR 70'S ONKYO TX NR-808 SONY CDP-333ES
    PIONEER PL-510A SONY BDP S5100
    POLK SDA 1C BOUGHT USED 2011,Gimpod/Sonic Caps/Mills RDO-194
    ONKYO HT RC-360 SONY BDP S590 TECHNICS SL BD-1
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  • Mr. Bubbles
    Mr. Bubbles Posts: 736
    edited February 2013
    Very very nice work. looks awesome.

    One thing i couldn't see in my mind. How thick was the plexi and the threaded rod? The reason i ask is i am trying to see in my mind how solid this is and/ or how prone to vibration it may be from the sound.

    Again; looks great, congrats to the owner.
    If con is the opposite of pro, is Congress the opposite of Progress?!


    Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium.
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  • VR3
    VR3 Posts: 29,382
    edited February 2013
    Thanks man!

    The "plexiglass" is not exactly "plexiglass" it is a material designed for circuit boards and that is very very dense. It is basically the thickness of a super nice circuit board. After all of the components were loaded there are nothing more than a thud! :)

    The itself definitely does not rattle... :)

    Thanks!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • MAD
    MAD Posts: 105
    edited September 2013
    Looks beautiful, top notch professional job. I would definitely be tempted to leave the crossovers outside the box to show them off... but that's a lot of wire to deal with.

    any updates on how the 198 tweeters sound or did you go back to the 194.
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  • VR3
    VR3 Posts: 29,382
    edited September 2013
    Thank you sir!

    As a professional policy as well as personal I have decided to not do any non-Polk approved modifications anymore...
    With that said, I believe the owner is happy with the overall sound of these! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • zingo
    zingo Posts: 11,258
    edited September 2013
    Looks great!
    Jake
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  • VR3
    VR3 Posts: 29,382
    edited October 2013
    Thanks Jake! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 29,382
    12 years later!

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    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • BlueBirdMusic
    BlueBirdMusic Posts: 2,735
    You are a true "ARTIST"!
    "Sometimes you have to look to the past to understand where you are going in the future"
    Harry / Marietta GA
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