DC Audio Pro Audio Tweeter 18 inch Subwoofer 25 equips it with both

25 equips it with both a woofer and a tweeter

and this amplifier BRINGS THE POWER

The T400-4 amplifier is perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s)

000 Xmax 23mm 23mm 23mm 23mm Ref SPL @1 watt 78

DC Audio Pro Audio Tweeter 18 inch Subwoofer 25 equips it with bothDC Audio Pro Audio 4" Tweeter Power Rating : 50 watts via the 1. 5" Voice Coil Diaphragm Material : Titanium 4 or 8 ohms impedance options Frequency Response: 3khz 30khz (comes with passive crossover) Sensitivity 100db Cutout 3. 5" Mounting Depth 2. 15" Sold in Individuals