Infinity Reference 6032si 6.5-Inch, Shallow Mount High Performance 150-Watt Two-Way Loudspeaker (Pair) 6.5-inch two-way loudspeaker with 1-15/16-inch shallow mounting depth 150 Watts maximum power handling with 2-ohm impedance Tweeter level adjustment located on the front of the speaker Patented Plus One woofer cone for increased bass output and higher efficiency 53Hz - 21kHz frequency response; 93dB sensitivity