G-long Subwoofer and M-Power Subwoofer - Black

Car subwoofer 10 inch refit car audio speaker subwoofer 3800W big power car subwoofer with box and Built-in Amplifier
Built-in Amplifier - A built-in 400 Max watt amplifier powers the 10" subwoofer Passive Radiator – A driver unit that has its motor structure (magnet) removed, becomes a passive diaphragm.

As a result, there is no Chuffing that you would generally get with a ported box, thus enriching the BASS & making the system more linear Variable Low-Pass Filter - A low-pass filter is an electronic circuit that removes all the notes below the filte

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

It will be used to your factory radio or an aftermarket radio that does not have low-level (RCA) inputs Phase Control - Phase control lets you adjust the speaker phase with the amplifier if your speakers or subwoofer are hooked up “out of phase”.Low

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