JL Audio STACK_KIT-3 Car Audio Accessories 87 dB SPL Effective Piston

87 dB SPL Effective Piston Area (Sd) 53

It also helps the tweeter dome to hold its shape and operate as a true piston at higher frequencies

while also powering a subwoofer with up to 300W @ 2 ohms

and punishing sunlight

JL Audio STACK_KIT-3 Car Audio Accessories 87 dB SPL Effective PistonAmplifier Stacking Hardware Kit for three (3) Slash v2 Amplifiers This hardware kit allows you to stack three like sized Slash v2 Amplifiers. It includes four long bolts, eight aluminum spacer tubes and four replacement rubber caps to cover the bolt heads. This kit is not designed to work with the original Slash amplifiers. Support: Download STACK_KIT 3 Product Manual