Presonus AIR18s Active 18" Subwoofer with DSP Mounts System Requirements (PC): Windows XP

System Requirements (PC): Windows XP or Vista

Players who are looking for the Ibanez quality at a price that won't break the bank

Mounting Ring Width: 1

or separate the two halves and use both for extra width

SR30 & SR30/HC

Presonus AIR18s Active 18" Subwoofer with DSP Mounts System Requirements (PC): Windows XPPresonus AIR 18s Active 18 Subwoofer with DSP Equally at home in mobile and installed systems, PreSonus AIR18s active subwoofers feature a 18 inch LF driver, driven by 1,200W of Class D power for a powerful, clear, and accurate low end punch down to 35 Hz. DSP presets enable extended low end performance and let you create ground stacked or endfire subwoofer arrays. A variable alignment delay properly aligns your three way system. Use the lowpass