These are Two-Way Passive crossovers manufactured by DS18. TWO WAY PASSIVE CROSSOVERS. TW-: Tweeter (Negative) 0dB: Tweeter (Positive) -3dB: Tweeter Attenuation -3dB (Positive) -6dB: Tweeter Attenuation -6dB (Positive) W+: Woofer (Positive) Connect to Speaker W-: Woofer (Negative) Connect to Speaker IN+: Input (Positive) Connect to Amp IN-: Input (Negative) Connect to Amp.
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