RangerDangerV2
5,000+ posts
CarAudio.com Veteran
apx with a 4" coil will have the 856 motor, an apxx with a 4" coil will have the 1087 motor, such as mine... I havent put power to mine yet but it is one of the beefiest subs that I have ever seen, not to mention that the 1087 motor is one of the most powerful non neo motors out there... just go apxx 18 with 4 spiders and you will be very happy...
