The APBX 8 R loaded enclosure was developed with reflex loading, with tuning designed to concentrate SPL in the lowest frequency range. The aim was to exploit the natural boost in output found in most cars below 60 Hz known as “cabin gain”.
The APBX 8 DS loaded enclosure provides the highest performance/ size ratio. For this purpose an 8.5 lt. sealed enclosure with a 4+4 Ω dual voice-coil configuration was adopted to exploit the full power of an AP5.9 bit (paralleling voice coils for a 2-ohm load) or with two pairs of AP8.9
12'' (300mm) Subwoofer
Powerful JBL Bass Reinforcement
JBL BassPro 12 delivers 150 Watts of powered noise-free deep bass thanks to JBL's patented Slipstream port technology. The Slipstream port is mathematically engineered to keep airflow with the port turbulence-free, which avoiding the common shortcoming of traditional ported boxes.
Sealed Slim Enclosure with 12'' (300mm) Subwoofer
The Primus 1270B subwoofer enclosure pounds out resounding bass from a compact enclosure that fits in just about any vehicle. High efficiency combines with impressive power-handling for rich and satisfying performance.