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Rockford Fosgate designed the PP4-X crossover to work with a Punch Pro Series midrange speaker and tweeter. The PP4-X provides low-pass filtering for a 4-ohm Punch Pro woofer (3,000 Hz at a 6dB per octave slope), while Punch Pro Series tweeters include their own built-in high-pass ...Rockford Fosgate designed the PP4-X crossover to work with a Punch Pro Series midrange speaker and tweeter. The PP4-X provides low-pass filtering for a 4-ohm Punch Pro woofer (3,000 Hz at a 6dB per octave slope), while Punch Pro Series tweeters include their own built-in high-pass crossover (4.5K Hz, 6 dB/octave).
Don't worry about that "gap" in the frequency coverage, as the gentle 6db/octave slope ensures that the final response is perfectly blended and smooth.
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Discover the top 10 must-see TVs of 2025, showcasing exceptional features and stunning designs that elevate your viewing...