BOSS Audio Systems BAB8 8 Inch Powered Under Seat Car Audio Subwoofer - 800 Watts Max, Low Profile, Remote Subwoofer Control, For Truck, Boxes and Enclosures

A built-in 800 Max watt amplifier powers the subwoofer PULSE WIDTH MODULATED: This design controls the output voltage and current precisely by not only removing the output current sensing loss, but also eliminating all secondary feedback circuitry.

It increases efficiency, is lighter, smaller reliable VARIABLE LOW-PASS FILTER: A low-pass filter is an electronic circuit that removes all the notes below the filter's frequency setting.

You will use the Low-pass filter to primarily keep high notes out of your subwoofer(s) HIGH LEVEL INPUTS: Speaker level inputs are commonly referred to as high-level inputs.

It will be used to connect the BAB8 to your factory radio or an aftermarket radio that does not have low-level (RCA) inputs LOW LEVEL INPUTS: Line level inputs, also known as RCA inputs or low-level inputs, use RCA interconnect cables to link the BAB8 with the source unit.

Most aftermarket radios have multiple pairs of RCA outputs that can connect to multiple amplifiers VARIABLE BASS BOOST: Variable Bass Boost allows you to adjust the low bass within the boost range to just the way you like it DIMENSIONS: 12 inches in Depth, 9.3 inches in Width and 2.9 inches in Height.