Polk Audio SDA SRS 1.2TL Crossover Modification Thread

VR3VR3 Posts: 21,757
edited May 2014 in DIY, Mods & Tweaks
This one should be a lot of fun!

1) The speakers will be recorded stock!
2) Parts list is as follows -

Tweeter Network -Clarity Cap MR
Clarity Cap ESA
Mundorf Mox Resistors
Jantzen Inductors

Midbass/SDA Network -Clarity Cap ESA
Jantzen Inductors

Gimpod boards too
NL2 Connections for the SDA, Supra Rondo wire, Upgraded binding post

200 Hours or so of burn in

3) Record them modified!

This will be a fun project for sure!
Post edited by VR3 on
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Comments

  • toucanettoucanet Posts: 571
    edited December 2012
    I'm all eyes on this one.

    Good luck!
  • VR3VR3 Posts: 21,757
    edited January 2013
    Off to record these bad boys stock! :)

    Still waiting on the inductors though to mod these!
  • DarqueKnightDarqueKnight Posts: 6,037
    edited January 2013
    Also make note of the changes in spatial properties between the stock and modified versions.
  • ReaganReagan Posts: 65
    edited January 2013
    ...in the results of this mod! (Especially since I own the pair to be modded)

    Reagan
  • PolkieManPolkieMan Posts: 2,444
    edited January 2013
    You are replacing all of the inductors too?

    VR3 wrote: »
    Off to record these bad boys stock! :)

    Still waiting on the inductors though to mod these!
  • VR3VR3 Posts: 21,757
    edited January 2013
    Yes, all board mounted and SDA
  • drumminmandrumminman Posts: 3,342
    edited January 2013
    Reagan wrote: »
    ...in the results of this mod! (Especially since I own the pair to be modded)

    Reagan

    Have you spent much time with the 1.2's before the mods? I'm interested in a before and after comparison given that you're using, among other components, Clarity Cap MR's.

    You're investing some serious coin!
  • ReaganReagan Posts: 65
    edited January 2013
    I've had the 1.2 TL's for about 10 years but am the original owner of SDA 1A's and 2'A's. I did the crossover upgrade on the 2A's and was quite pleased with the results. Reagan
  • drumminmandrumminman Posts: 3,342
    edited January 2013
    Reagan wrote: »
    I've had the 1.2 TL's for about 10 years but am the original owner of SDA 1A's and 2'A's. I did the crossover upgrade on the 2A's and was quite pleased with the results. Reagan

    Cool - looking forward to your impressions.
  • PolkieManPolkieMan Posts: 2,444
    edited January 2013
    Are they available for the 2.3 Tls too?
    VR3 wrote: »
    Yes, all board mounted and SDA
  • VR3VR3 Posts: 21,757
    edited January 2013
    Most definitely!
  • VR3VR3 Posts: 21,757
    edited February 2013
  • VR3VR3 Posts: 21,757
    edited February 2013
    I would have to say we captured the imaging capabilities of the SDA really well.. :)
  • VR3VR3 Posts: 21,757
    edited February 2013
    Alright,

    1.2TL recording posted - lets see if Soundcloud likes me tonight!

    http://soundcloud.com/vr3mods/polk-audio-sda-srs-1-2tl-stock
  • OldfatdogsOldfatdogs Posts: 1,885
    edited February 2013
    Sounds good to me.Who is singing?
    Dan

    Found it Thanks
  • VR3VR3 Posts: 21,757
    edited February 2013
    That is Millage Gilbert.

    How do you feel we captured the SDA staging?
  • OldfatdogsOldfatdogs Posts: 1,885
    edited February 2013
    From what I can tell with my computer speakers it sounds real good.I wish I could give some more helpful feedback than that,but on these speakers just not possible.

    Dan
  • VR3VR3 Posts: 21,757
    edited February 2013
    I have another 1.2TL coming for modifications that is what I would describe as "Balls Deep"

    Clarity Cap MR on the entire tweeter network, all 12uf and .25uf caps and the midbass/SDA is all ESA.

    I am a little pumped about this!!
  • schwarcwschwarcw Posts: 7,059
    edited February 2013
    So Trey what are you impressions?
  • VR3VR3 Posts: 21,757
    edited February 2013
    Of the recording?

    I have a lot of opinions but I want to hear everyones opinions first... :)
  • Toolfan66Toolfan66 Posts: 13,017
    edited February 2013
    I am really thinking about putting the Clarity MR12's in my crossovers. I'm sure I will have to reconfigure my setup for them.

    Maybe I just buy them and plan on doing a full point to point external crossover..
  • VR3VR3 Posts: 21,757
    edited February 2013
    I have a brilliant idea to make the MR work and not even make it look like a mountain ;)

    Stay tuned!
  • VR3VR3 Posts: 21,757
    edited February 2013
    We *might* need more room! :)
  • ZLTFULZLTFUL Posts: 3,935
    edited February 2013
    "Does this board make my caps look big?"

    "I think we need a bigger board..."

    Damn you Donkey Kong...stop throwing those barrels at me!
  • VR3VR3 Posts: 21,757
    edited February 2013
    I can't wait to do the mod using the MR 12s... it is going to be SICK! :)
  • nspindelnspindel Posts: 5,151
    edited February 2013
    Tony should build a new board. You know, his original seems to have gotten a bit cramped.
  • VR3VR3 Posts: 21,757
    edited February 2013
    1.2TL with ESA/Jantzen - half way done! :)
  • VR3VR3 Posts: 21,757
    edited February 2013
    All wired up! :)
  • treitz3treitz3 Posts: 11,902
    edited February 2013
    Who was it that said size doesn't matter?

    Tom
  • VR3VR3 Posts: 21,757
    edited February 2013
    Yeah those things are monsters! Three per crossover!! :)
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