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Pete77 Posts: 2

September 1 in Vintage Speakers

I have polk SDA, SDA1 and SDA2 are there any upgrades for them if so, what are they?

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  pitdogg2 Posts: 27,846

  September 1 edited September 1

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  https://forum.polkaudio.com/search?domain=all_content&query=SDA crossover upgrade&scope=site&source=community
  Welcome aboard.

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