Subwoofer Box | 800 W Peak Power | 250 mm | Active Subwoofer
Prima APBX 10 AS2 主動式超低音喇叭，採用 10 吋單體，配備專屬的高性能擴大機模組，進一步提升所有被動式箱體技術，例如 2S²（2 Sides / 2 Sounds）設計、Plug & Play 端子塊以及超緊湊尺寸。擴大機模組輸出功率達 400W RMS，採用 he-li 技術（高效率 / 低阻抗），由於沒有 DC-DC 電壓升壓器，其效率高達 90%，接近 D 類擴大機的理論極限。全新輸入級 DBT（Dynamic Bass Tracking）技術允許 he-li（高效率低阻抗）擴大機 100% 發揮功率，即使在極高音量下仍能呈現緊湊且具動態的低音表現。
透過開發全新的雙音圈單體（APBX 10 AS 的超低阻抗僅 0.16 歐姆），成功消除了電壓升壓器的需求，該單體承襲 Prima 低音喇叭的技術優勢，並與 he-li（高效率低阻抗）技術完美匹配，最大化擴大機、喇叭和密閉箱體的組合，呈現深沉、強勁且清晰的低頻效果。
控制面板設計完善，能夠根據車內環境進行最佳低頻調整。內建 Butterworth 低通濾波器（12dB/Oct.），可調頻率範圍為 50-200Hz，當搭配 AP bit 處理器並使用專屬超低音前級輸出時，可選擇繞過濾波器。低音增強控制（0 ÷ 6 dB）設於 45Hz，能夠強化頻譜低端的響應表現。
多極連接器上的高電平輸入端（Speaker-in）方便與 OEM 原廠音響系統整合，而 RCA 低電平輸入則專為後裝音響設備設計。超低音喇叭自動開關功能 ART（Automatic Remote Turn-On）可配置為透過音源的遙控信號、高電平輸入的電壓變化，或雙輸入的音頻信號來控制開關。設備還具備相位控制（0-180°）。此外，SSP（Sub Smart Plug）端子塊採用單一 Plug&Play 連接器，讓使用者能夠輕鬆且安全地斷開超低音喇叭的連接。
The Prima APBX 10 AS2 active subwoofer, with the 10-inch driver, features a dedicated high-performance amplification module that 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, 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. New input stage DBT (Dynamic Bass Tracking) technology allows 100% use of the he-li (High-Efficiency Low Impedance) amplifier power and to enjoy a tense and dynamic bass even at very high listening volumes. 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 (0.16 ohms for APBX 10 AS). 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. The controls section is complete and provides optimal regulation of the low-frequency emission in the car cabin. The Butterworth low pass filter at 12dB/Oct. with variable cut-off frequency (50-200 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 on the lower side of the spectrum. The high-level speaker-in input on the 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 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.