This 6 X 9 will amaze you. From the deep bass to sparkling highs - these will blow you away! These speakers are +/- 3dB from 40 Hz to 19 Hz. The 93 dB efficiency will allow you to drive this with most decent head units to a decent volume. If you want to crank, add an high power amp - these will handle 80 watts continuous and 300 watt peaks.