Polk Audio SDA SRS 2 Crossover Modification Thread

VR3
VR3 Posts: 28,742
edited October 2013 in DIY, Mods & Tweaks
Tweeter Network -
Clarity Cap ESA
Mundorf Mox

Midbass Network -
Clarity Cap PX and Solen PB400V

Upgraded binding post, NL2 connections

This will also be to accommodate the RDO198 - it looks like it has been done with this model and the owner wants to make it happen! :)
- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
Post edited by VR3 on
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  • F1nut
    F1nut Posts: 50,647
    edited January 2013
    What's being done with the bottom tweeter and circuit? What's being done to compensate for the overall balance being thrown out of whack?
    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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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    This just got bumped from cool to serious...

    I won't give any details but I would stay tuned!!! :]
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Rough layout of point to point SDA crossover... :) - will most likely change it a bit, just wanted to see how it all fit!

    Will be suhweet!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • F1nut
    F1nut Posts: 50,647
    edited January 2013
    So, what is being done with the bottom tweeter and circuit? What's being done to compensate for the overall balance being thrown out of whack?
    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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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    All I will comment is the resistor needed to run 194 has been ordered and the customer is ordering 198 tweeters with the understanding if it does not sound right we can change it over pretty easy...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • F1nut
    F1nut Posts: 50,647
    edited January 2013
    How can it sound right when the MW6509 drivers are so different than the MW6503, MW6510 and MW6511 used in the models that are or can be TL'd?

    The SRS 2 blade/blade is a 4 ohm nominal speaker, all the TL speakers are at least 6 ohm.

    The MW6509 has a resistance of 8.970 ohms, the Fs is 30Hz.
    The MW6503 has a resistance of 6.540 ohms, the Fs is 29Hz.
    The MW6510 has a resistance of 6.570 ohms, the Fs is 31Hz.
    The MW6511 has a resistance of 3.130 ohms, the Fs is 29Hz.

    I'm not a speaker designer, but I know enough to know that there has to be a balance between the highs and the lows. I don't see how that is possible with the given info.
    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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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    I understand all of this...


    the only reason we are trying it is because I found a couple quotes from Matt Polk saying it should work as well as Ken. I also found a couple members who have performed the mod with success
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    I think I am going to do this like the Legacy Empire crossover -

    The left side of the crossover will be built in layers to save room and unclutter everything and the back end of the crossover will house the larger components...

    All of the wiring will be completed beneath the board for a clean look.

    I am excited to see the results!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • F1nut
    F1nut Posts: 50,647
    edited January 2013
    VR3 wrote: »
    the only reason we are trying it is because I found a couple quotes from Matt Polk saying it should work as well as Ken.

    Yes, I have read Matt's comments too. Not exactly a ringing endorsement.
    I also found a couple members who have performed the mod with success

    Yeah.....ummmm......questionable at best, IMO. You can't just change the top tweeter and circuit and do nothing with the bottom one.
    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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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Love Padauk wood!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Padauk has a natural oil to it - just polished it out - looking good!

    Plexiglass cut and ready for some general layout ideas!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • michael1947
    michael1947 Posts: 775
    edited January 2013
    Not to rain on your fine wood but did you know that Padauk will loose it's color over time and go to kind of a bleached out look. I have quit using it. At least that's my experience with it, best of luck. Oh, I still owe you some coins for my parts, will pp sap.
    Main Family Room: Sony 46 LCD, Sony Blue Ray, Sony DVD/VCR combo,Onkyo TXNR 708, Parasound 5250,
    Polk SDS-SRS with mods, CSI 5 center + Klipsch SC2, Polk RT2000P rears, Klipsch KG 1.5's sides, Polk Micro Pro 1000, Polk Micro Pro 2000, Polk SW505, Belkin PF60, Signal Cable Classics,Monster IC's, 2 15 amp circuits & 1 20 amp circuit.

    Living Room: Belkin PF60, Parasound HCA2200, MIT ProlineEXP balanced IC's,Emotiva XDA-1 DAC/Pre,Emotiva ERC2 transport,MIT AVT2, Polk LSI 9's.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    I could see that happen if it was exposed...

    This piece of wood will see the light of day for the next... 2 weeks and then it will be forever housed away inside of a loudspeaker! :-P.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Love it when a plan looks this awesome! :-P
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Rough idea on how the big parts will lay out -

    the small parts I am still up in the air about!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Exactly as imagined!

    Just have find some 3" polished stand offs for the second tier!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Midbass/SDA network wired up!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • evhudsons
    evhudsons Posts: 1,175
    edited January 2013
    Trey, are these for the blade blade as you can TL them?

    looking good!
    Polk Audio SDA CRS+ crossover 4.1TL by Trey/VR3 (Rings and custom stand by Larry)-Polk Audio SDA SRS2 crossovers by Trey/VR3Parasound HCA1500aYamaha rxa-3070 with musicast-Celestion SL6S presence,- sl9 surround backNHTsuper1's surroundMagnepan SMGParasound 1500pre- Sofia "Baby" tube amp - Monitor Audio Silver RX2 Marantz 2230/B&Kst140Technics 1200mk2 Gamertag: IslandBerserker I am but a infinitesimally small point meeting the line of infinity in the SDA universe
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    This is a blade blade SDA SRS 2

    We are attempting a controversial RDO198 modification! :-P

    But we are also including parts to convert them to 194 tweeters in case it is not 100%!

    Thanks! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    Tweeter network!

    Not 100% complete but my stopping point for now!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    General idea of the layout
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited January 2013
    One crossover completed, one to do and internal wiring! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited February 2013
    Mirror imaged crossovers, right and left! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited February 2013
    It is hard to work backwards lol
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited February 2013
    Internal wiring mock up
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,742
    edited February 2013
    Internal wiring in place
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Anthony Hinton
    Anthony Hinton Posts: 107
    edited February 2013
    Nice work!
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  • VR3
    VR3 Posts: 28,742
    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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  • Systems
    Systems Posts: 14,873
    edited February 2013
    VR3 wrote: »
    Thank you sir! :)

    "Pretty"!

    Very "Pretty"!

    You liike that word James?:redface:

    I am just ribbing you Trey (Inside Joke).:cheesygrin:
    Very nice work my friend!
    As usual, VERY, VERY NICE!
    Testing
    Testing
    Testing
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  • VR3
    VR3 Posts: 28,742
    edited February 2013
    The finishing touches...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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