Tempe, Ariz. - Rockford has begun shipping a Helix-branded amplifier/digital signal processor (DSP), which is designed to upgrade factory sound systems by adding higher power and by tuning the sound to a car's interior.
The $549-suggested Helix PP50 Digital Signal Processor PP50 connects to a factory head's speaker-level outputs. Its amp section is rated at 8x40 watts. An optional companion enclosed subwoofer is available.
Unlike other car DSP systems, the PP50 doesn't require installers to use a microphone and pink-noise generator to tune the system when installed in multiple specific vehicle models.
To tune the sound system to a specific vehicle, installers download acoustic-correction algorithms for a specific vehicle via the web in 90 seconds, then side-load them to an SD Memory Card. The car is then plugged into the system. If an algorithm is unavailable for a specific vehicle, installers will be able to hand-tune the audio system.
Tuning algorithms for multiple top-selling vehicles, but the precise number of vehicles was unavailable.
The device features optional USB interface to adjust DSP,
three time-alignment modes, separate front/rear high-pass and subwoofer low-pass crossovers, 16 manual DSP adjustments via dipswitches, quick installation via vehicle-specific interfaces that make wire cutting unnecessary, and an input for MP3 players or portable navigation devices.
brand of high-performance amps and speakers are developed by mobile-audio supplier Audiotec Fischer of Germany, Rockford is the exclusive North American distributor.