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This made for some interesting mechanical problems that required some creativity to solve.Remember, everything has to fit back through the same opening that it was removed from.I spent about 0 per speaker on parts for this project, taking a middle-of-the road approach, with Soni Caps and Mills resistors from Sonic Craft.These components have garnered a lot of favorable recommendations on the Polk Audio forums, and yield considerably better performance than Radio Shack quality components without the extreme price of Clarity capacitors or Duelund resistors.In order to demonstrate this point, I’ll guide you through the process of upgrading the crossovers in my beloved Polk Audio Monitor 10B’s.

The audio crossover is probably the most important part of a loud speaker that you see; it is every bit as important to the overall speaker design as is the type of tweeter or cabinet volume.

We already have a number of articles about the design and purpose of a speaker crossover in our Speaker Design section of the website.

For more information on Crossover design: The goal of this article is to demonstrate that crossovers can be rebuilt and/or upgraded with superior parts and materials to enhance your listening experience.

Figure 5 - Upgraded Crossover Here's a tip: don't trim component leads on the back side of the board until you've completed the soldering process; that leaves you the option of raising, lowering, or rotating a part if necessary.

Examining Figures 2 and 6, you'll notice I had to label the tweeter and driver leads (before desoldering) since there was no easy way to distinguish between them.

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