SX212 2x12" Direct Radiating Compact Dual Subwoofer 800W Black | Martin Audio | Leisuretec
DIY Martin Audio ws18x PA sub test @ 140hz Small Dream Sound System - YouTube
Rea Sound-Audio - Martin Audio Torus T1230 with SXC118 Cardioid Sub 18 forward 14” rear System powered with 1 Ikon IK42-Dante 20K DSP Amplifier superb for 15 to 30m throw for pricing
Martin Audio X118B BLX Sub, 1x Long-excursion 18” Driver In A Reflex Enclosure | Full Compass Systems