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Type: Posts; User: ardvark1

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  1. Replies
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    count me in if it's possible

    Hey Mike!

    If a seat comes up, count me in. Been below the radar for awhile.

    Bill
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    crossover upgrade

    Congrats on upgrading your SDA's!
    I'm glad others like yourself are trying this; the rewards are truly worth the time and effort you put into it.
    And yes, it does take some time for your new...
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    Excellent post!

    Excellent job Cary,
    I see you have the same workbench as mine.

    I also experienced a reduced SDA effect at first. The speakers should improve overall as the new caps burn in.

    I wanted to see...
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    Dennis, I ordered several other items and two...

    Dennis, I ordered several other items and two sets of vampire posts, not to mention if you buy a pound of cardas solder, that will set you back quite a bit, but its wonderful to work with.
    I don't...
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    Thanks Doro! It was a labor of love.

    Thanks Doro!
    It was a labor of love.
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    Finished product with tweeter upgrades. A note...

    Finished product with tweeter upgrades.
    A note on tweeter installation.
    Yes the new tweeters are quite abit larger than the SL1000's but don't dispair!
    Simply center them and outline them with a...
  7. Replies
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    Crossover reinstalled in cabinets. One important...

    Crossover reinstalled in cabinets.
    One important note I left out. WHEN POSITIONING THE CAPS ON THE SDA BOARD, HOLD THEM IN PLACE WITH TAPE FIRST AND MAKE SURE YOU CAN WORK THEM BACK THROUGH THE HOLE...
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    Finished product, stereo and sda crossovers ready...

    Finished product, stereo and sda crossovers ready for re-installation.
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    The binding posts were upgraded with vampires....

    The binding posts were upgraded with vampires. Now is the time to replace the binding posts when you have everything torn apart.
    The glue gun came in handy once again to seal the connections to the...
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    Top view, upgraded SDA board.

    Top view, upgraded SDA board.
  11. Replies
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    Here is the Sda board layout.

    Here is the Sda board layout.
  12. Replies
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    The circuit boards are thankfully quite simple in...

    The circuit boards are thankfully quite simple in their configuration. Here is a shot of the back side.
  13. Replies
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    Stereo board, top view.

    Stereo board, top view.
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    I tackled the stereo crossover first since it...

    I tackled the stereo crossover first since it involved the most work.
    Notice the two small caps end to end. The reason for this is I wanted to use all solen caps and they did not have a 0.5uf cap,...
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    New components, solen caps, mills resistors,...

    New components, solen caps, mills resistors, vampire binding posts, etc.
  16. Replies
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    8,100

    Top view of original crossover components.

    Top view of original crossover components.
  17. Replies
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    The top(stereo) crossover mounts on to of a coil...

    The top(stereo) crossover mounts on to of a coil which bolts to the speaker enclosure.
    The bottom (SDA) crossover mounts to the back of the binding post, and (in my case) fuse holder plate.

    The...
  18. Replies
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    before and after shots

    Crossovers in the original form.
  19. Replies
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    1st generation SDA 2 crossover upgrade guide

    The first part of this upgrade was made several months ago by replacing the original SL1000's with the new replacement tweeters. To anyone who is still not convinced, after about 50 hours or so,...
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    Working on it, will post tonight. Been busy as...

    Working on it, will post tonight. Been busy as hell, how have you been?

    Bill
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    worth the wait

    I installed the replacement tweeters (replaced SL1000's) and they sounded smoother, with a more natural sound, but they did indeed sound flat by comparison. I had to keep smacking my hand when it...
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    Fuses

    I don't own a pair of SRS' but I have a pair of SDA-2's which use a fuse system, two per speaker, one for each tweeter.

    Polk calls for a 1 amp 3AG fast blow fuse for each tweeter.
    I have driven...
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    Thanks for the input guys, the fuses will stay! ...

    Thanks for the input guys, the fuses will stay!

    I have another question, when I have them torn apart for awhile
    I will be going to headphones to hold me over.
    Doe's anyone have any personal...
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    polyswitch question

    Since the polyswitch topic has come up, I have a question.
    Why did polk move from fuses to polyswitches in the first place?
    I would think they would be more likely to degrade the signal than a fuse...
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    SDA-2 1st generation spec's

    Wow, sorry about that, forgot to resize the image.
    Here are the spec's from the manual.
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