Pioneer 10" 4-ohm Shallow-mount Subwoofer (TS-A2500LS4)A shallow mount sub that rocks Pioneer's TS Series shallow mount subs bring great bass to vehicles where conventional subs won't fit. Their low profile allows the use of slender enclosures that'll fit behind a truck seat or in any tight space while delivering the bass performance you need. The TS A2500LS4 10" shallow mount sub handles up to 300 watts with a mounting depth of just 3 1 4". The TS A2500LS4 features an oversized, glass fiber and mica