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Description
audison APBX 8 AS2The Prima APBX 8 AS2 active subwoofer, with the 8 inch driver, features a dedicated high performance amplification module that enhances all the passive box technologies, such as the 2S (2 Sides 2 Sounds) design, the Plug & Play terminal block and ultra compact size. The amplification module, with power outputs of 250W RMS, is developed with he li technology (high efficiency low impedance), which thanks to the absence of the DC DC voltage booster
The Prima APBX 8 AS2 active subwoofer, with the 8-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 250W 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. 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 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 (50-200 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.
Technical Specs
| Nominal diameter | 200 mm |
| Power Handling - Peak | 500 W |
| Power Handling - Continuous | 250 W |
| Magnet Material | HIGH DENSITY FLUX FERRITE |
| Cone Material | WATER REPELLENT PRESSED PAPER |
Features
- Integrated 250 W RMS 0.4 ohm2 D-Class amplifier featuring he-li technology
(high efficiency / low impedance) without switching power supply, for a
performance next to ideal. - 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. - Butterworth low-pass filter at 12dB/Oct. with variable cutting frequency (50-300 Hz), phase control (0-180°), and adjustable bass-boost
0÷6 db 45Hz. - Defeatable filter to use the sub-dedicated output of a bit or AP bit processor.
- High-level audio input on multi-pin connector for maximum OEM
integration and low level on RCA for aftermarket sources. - ART turn-on function (Automatic Remote Turn-On) is selectable among Remote-in, Hi-level, Audio signals.
- Box with ultra-low profile (6.22 in. / 158 mm) in air suspension, designed to take full advantage of the performance of the 8-inch APS 8 DL
high-impedance driver. - The SSP (Sub Smart Plug) terminal block is provided with a Plug & Play connector to be able to disconnect the box easily and safely.
- The 2S² (2 Sides / 2 Sounds) design provides the ability to select between
Down-Firing positioning to increase the low-frequency extension and
Up-Firing installation to obtain more punch and definition. - Down-firing leveling feet with Velcro inserts included for a secure grip with the carpet, ensuring extreme ease of removal.
- Rounded corners allow easy placement in the trunk and act as a
reinforcement to reduce enclosure resonances. - Exclusive design of the cone, dust-cap, and basket geometry to achieve a wide linear excursion (9 mm in one direction), keeping the depth required for assembly to a minimum.
- HRC AP remote control included.
- Sturdy metal grille is included, for total protection of the subwoofer driver.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
They stay out! No more sock wads!
Size: Medium, Color: (100) White / White / Mod Gray
Best no show socks ever made!!!!! I've been struggling for 2 years to find ones that actually stay on your foot, even other national brands, and I just became content wearing my sneakers without socks. They ALWAYS slid down into my show & I ended up walking on a wad of sock until I could fix it...or usually just took them off after a couple of tries. Enter Under Armor!!! They a mid weight, but not very thick & still breathable. They work too by actually staying on your foot! Not once have they slid down into my show!! Very comfortable but they could be a little more affordable.
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Reviewed in the United States on August 1, 2025
★★★★★ 5
Love!
Size: Large, Color: (100) White / White / Mod Gray
Ive tried so many no show socks but I love these. This is the 3rd set I've bought. They never slip off and the material is thin and breathable. Perfect for working out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
True no-show socks that don’t slide down!
Size: Medium, Color: (100) White / White / Mod Gray, Size: Medium, Color: (100) White / White / Mod Gray
This is the first pair of no-show socks I’ve tried that actually don’t slide down into my shoes. Trust me… I have tried lots of different pairs and this is the one! They fit perfectly. They’re not too thick and they’re obviously durable because I wash them after each wear, so daily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
★★★★★ 4
Great fit but expensive
Size: Medium, Color: (252) Blush Beige / White / Castlerock
These are really great socks. I love them, but they are definitely pricey.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
Great socks!
Size: Medium, Color: (252) Blush Beige / White / Castlerock
Love these socks so much I got a second package. I like how thin and airy they are and they never slide down my heel. For thin socks they’re pretty durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 16, 2025