Memphis 15-SRX52 SRX52 5.25" 40 Watt Car Audio Stereo Coaxial Speakers Memphis 15-SRX52 5.25" 40 Watt RMS Speakers Peak: 100 Watts pair / 50 Watts each RMS: 40 Watts pair / 20 Watts each Sensitivity: 88 dB Size: 5.25" Mounting Depth: 2"