Aerpro APU8SUM Hi-Low Level Signal Summing Interface active subwoofer enclosure Grow your audio system with

Grow your audio system with compatible Fusion speakers

Oversized set screws for maximum contact and secure termination

3 inch (83

Mazda CX9 (2011 - 2015 TB)

Aerpro APU8SUM Hi-Low Level Signal Summing Interface active subwoofer enclosure Grow your audio system withThese Adaptors Allow You to Install an Aftermarket Amplifier to Your Factory Head Unit Complete integration of aftermarket audio components into Vehicle OEM system. Sums and balances multiple signals from Factory Stereo, sums up to four Speaker level stereo pairs down to single stereo RCA low level output. Legendary Products & Support From Authorized Dealers When you choose Aerpro, you're choosing quality and performance. But just as important as what