I gotta stir the pot and ask a question on this one.
You mention you have your tweeter and woofer wired in parallel. What is the resistance of each of those speakers (both 4 ohm?). If so, and you are using the 3.9 ohm resistor in series from your amp with the woofer and tweeter in parallel you've created a 6 ohm load for your amp. Your diagram mentions 8 ohms.
Every capacitor will always have a + and - terminal. The current flowing through a capacitor is equal to the capacitance value times the rate of change of the input voltage. This property makes them ideally suited for high frequency filtering. At low rates of change, the current is small - this is the effect of a high pass filter. If memory serves the 4.7uF is very common with tweeters because its 3dB cutoff freq is at ~15.9kHz. BUT the capacitor needs to be wired in series to your tweeter not parallel to be effective.
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2011 Brilliant Silver 6spd w/sport pkg
2008 Silver CBR600RR
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