The Prima APBX 8 AS2 and APBX 10 AS2 active subwoofers, with 8 and 10-inch drivers respectively, feature a dedicated high performance amplification module which enhances all the passive box technologies, such as the 2S² (2 Sides / 2 Sounds) design, the Plug & Play terminal block and ultra-compact size.
The amplification module, with power outputs of 400W RMS (APBX 10 AS2) and 250W (APBX 8 AS2) is developed with he-li technology (high efficiency / low impedance), which thanks to the absence of the DC-DC voltage booster reaches the impressive 90% efficiency level, very close to the theoretical limit of the D-Class.
Eliminating the voltage booster was made possible thanks to the development of the new dual coil drivers, which inherit all the technological background of the Prima subwoofers, but differ for the ultra low impedance (0.16ohms for APBX 10 AS2).
This feature ensures a perfect synergy with the he-li (High Efficiency Low Impedance) technology, maximizing the combination of amplifier, speakers and sealed box, to obtain low, powerful and crisp frequencies.
Input stage DBT (Dynamic Bass Tracking) technology allows fully use of the he-li high efficiency amplifier power of APBX 10 AS2 / APBX 8 AS2 to enjoy a tense and dynamic bass even at very high listening volumes.
DBT monitors the input signal in real time by detecting in advance the peaks which, if not processed, will bring the amplifier /subwoofer system into uncontrolled distortion, when it is pushed to maximum power.
DBT prevents this critical condition by processing the attack and release of the peak in advance according to parameters optimized based on the perception of sound by the auditory system.
The result is amazing, the perception of pressure and acoustic quality are greatly emphasized thanks to the intervention of the (DBT), which “favors” the extremely dynamic and defined reproduction of low frequencies, even at maximum power.
The controls section is complete and provides an optimal regulation of the low frequency emission in the car cabin. The Butterworth low pass filter at 12dB/Oct. with variable cut-off
frequency (50-300 Hz) can be bypassed, when used with an AP bit processor with pre-out output dedicated to the sub. The adjustable bass-boost control (0 ÷ 6 dB) at 45 Hz allows the user to emphasize the response in the lower side of the spectrum.
The high-level speaker-in input on multi-pole connector eases the integration with OEM audio systems while the low-level input on RCA is dedicated to the connection with after market sources.
The subwoofer automatic turn on/off function ART (Automatic Remote Turn-On) can be configured to be controlled by the source’s remote signal, by the voltage variation on the high-level input or by the audio signal on both inputs. Phase control (0 – 180 °) completes the equipment.
The SSP (Sub Smart Plug) terminal block is provided with a single Plug&Play connector to be able to disconnect the box easily and safely.
The remote control HRC AP included, provides the ability to adjust
the output level directly from the driver’s seat.
DBT monitors the input signal in real time by detecting in advance the peaks which, if not processed, will bring the amplifier / subwoofer system into uncontrolled distortion, when it is pushed to maximum power.
High efficiency / Low impedance amplifier without switching power supply, for a performance next to ideal.
Provided with a Plug&Play connector to be able to disconnect the box easily and safely.
Provides the ability to select between Down-Firing positioning to increase the low frequency extension and Up-Firing install to obtain more punch and definition.