Had this behind the back seat of my 11, swapped it out for something different. Works just fine.
Specs are:
Power Handling
1500W Max
400W RMS
General Specifications
Frequency Response: 20 ~ 230Hz
Sensitivity: : 93db
Recommended Enclosure: 0.5 ~ 1.0 Cubic Feet
Dimensions: 13" x 3-7/8"
Mounting...