Massive Audio “NEO Series” Subwoofers. All 4 NEO dual 4 ohm subs are designed around cars and trucks that require high performance and can be installed in small tight spaces! Massive Audio NEO subs will work in tiny sealed boxes as small as 0.33! (NEO 8”). All 4 Neo subs use HOT tight Red stitching that’s sewn through a UV laminated treated paper cone and into pressed foam surround. Then it’s bonded to a heavy gauge steel basket that’s bolted to a high flux Y30 Strontium ferrite magnet with an 8mm top plate. Then everything dances on a springy poly cotton spider with high powered woven tinsel leads connect to spring loaded speaker connectors. From the tiny NEO 8”, 10”, 12” and 15” with NEO “You’re Young, Your Hot & Your Bang’N”.