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When replacing a capacitor in an existing printed circuit crossover board, order the same capacitance value (in uF - microfarads) as the original. Our Audiophiler capacitors are rated at a maximum of 400 volts, which offers significant margin over typical voltages found in audio speaker circuits. |
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If you wish to create a basic first order crossover for a horn or tweeter using a single capacitor, use the following table to determine your crossover frequency, based on the impedance of the horn/tweeter, and the capacitance of the crossover capacitor. (Crossover frequencies have been rounded off). |
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Capacitor Value |
2 ohms |
4 ohms |
8 ohms |
16 ohms |
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1.0uF |
80,000Hz* |
40,000Hz* |
20,000Hz* |
10,000Hz |
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2.2uF |
36,000Hz* |
18,000Hz* |
9,000Hz |
4,500Hz |
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3.3uF |
24,000Hz* |
12,000Hz |
6,000Hz |
3,000Hz |
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4.7uF |
16,800Hz* |
8,400Hz |
4,200Hz |
2,100Hz |
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6.8uF |
11,600Hz |
5,800Hz |
2,900Hz |
1,450Hz |
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10uF |
8,000Hz |
4,000Hz |
2,000Hz |
1,000Hz |
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Frequencies marked with a (*) are effectively beyond the range of normal human hearing |
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