⭐JL AUDIO FOCAL SPEAKER AMPLIFIER MODULE CONTROL SUBWOOFER SET ASSEMBLY LOT2269 | eBay
12" JL 12W0 subwoofer in custom JL Audio box plus JX250/1D amplifier | eBay
Amazon.com: DS18 SB12A 12 Inches Shallow Subwoofer Enclosure with Built in Amplifier – Car Audio All in One Amplifier and Subwoofer Bass Package 700 Watts Power – Great Stealth Car Subwoofer in
JL Audio JD500/1 500 WATT Class D Monoblock Subwoofer Amplifier - EAI - Pascagoula
JL Audio PPJLA5 10" Loaded Subwoofer Enclosure and Amp Package – Car Toys
Jl audio sub/amp combo , my kids literally turned all the knobs and left me with crappy sound , any help would be appreciated , just baseline for those features would be