Alpine - PWD-X5 4.1 Channel Digital Sound Processor (DSP) with Powered Subwoofer
MiniMe DSP P63B - Earthquake Sound Shop
PRORECK SP-12X Active Powered PA DJ Subwoofer Cabinet 12 inch 1000W P.M.P.O with Class-D Amplifier, 3 DSP Presets-Monitor, Bass Reinforcement, Black, for Wedding, Party, Concert, Church (One Sub) - Walmart.com
MiniMe DSP P-10 Subwoofer - Earthquake Sound Corp.
the box pro DSP 18 Sub – Thomann United States
Subwoofer equalization and integration with the miniDSP 2×4
Dayton Audio - DSP-LF Low Frequency DSP Controller