JL Audio is introducing StealthMod, a complete, JL Audio-engineered car audio upgrade package that builds on a Stealthbox installation with well thought-out amplification and/or speaker system ...

Got bass? We’re not talking about the factory subwoofer “upgrade” that you splurged on when you signed on the dotted line; rather we’re talking about earth-shaking, eardrum-shattering bass that makes ...