ESX QXB8A - 20cm active subwoofer

Good subwoofer systems always require powerful additional amplifiers. If installing an external amplifier is too complicated or there is not enough space, active variants with factory-installed amplifiers are available. But be careful: for cost reasons, weak or outdated analog power amplifiers are often installed, which are difficult for laypeople
to recognize at first glance. Sometimes, even the simplest 12-volt bridge chips are used, which are no more powerful than simple car radios.
ESX takes a different approach here and integrates state-of-the-art Class D amplifier modules that can mobilize up to 400 watts/RMS output power.
Equipped in this way, the very compact   QUANTUM QXB active subwoofer systems deliver extremely high power and bass levels.
ESX uses high-quality, award-winning   POWER4 active modules, which are also particularly efficient with up to 84% efficiency.
Thanks to state-of-the-art Class D circuitry and EPS PRO, these modules are even prepared for connection to the latest vehicles. The bass can be adjusted from the driver's seat using the included cable remote control. ESX
has also included 4 mounting feet with each of the active versions of the   QUANTUM QXB subwoofer systems, which can be screwed onto
the front if required. This allows both models to be converted into "downfire subs" with minimal effort. These boxes, with the woofer facing downwards, are particularly well suited for installation in double trunk floors, for example.

Technical data

• 20 cm (8") active subwoofer system (bass reflex)
• Integrated Class D amplifier (Power4 active module)
• 1 x 400/800 watts RMS/max.
• Low-pass filter 40-120 Hz with 12 dB slope
• Phase switch 0°/180°
• Bass boost 0-6 dB @ 45 Hz
• RCA low-level input
• High-level input
• Automatic power-on function (DC or signal)
• Start-stop capable, 5 sec./up to 7 volts
• EPS PRO with 10R / 150R / 600R (switchable)
• Input sensitivity 15 or 40 volts (switchable)
• 3-way limiter function, clipping LED
• Bass level cable remote control
• Robust compact housing with logo stickers
• Protective grille
• Optional feet for downfire operation
• Dimensions 46 x 33 x 18 cm