High-end active modules for housing subwoofers

While people used to like to have very large amplifiers and subwoofers visible and prominently installed in the trunk, today hidden components are all the more popular in modern vehicles. To do this, however, they have to be significantly more compact and efficient. A good and proven solution for more bass in the car are active subwoofers in which the integrated subwoofer is powered by an active module already installed in the housing at the factory. One problem, however, is that really good woofers need a lot of power, usually much more than conventional active modules can do. Worse still: The performance specifications of such factory-installed modules with allegedly several hundred watts are very often pure fantasy specifications; in the worst case, a small, overstrained IC amplifier is at work behind the scenes. The powerful and highly efficient digital Class-D POWER4 and POWER2 retrofit modules with real RMS wattage specifications and ingenious connection features for many high-end applications can now help.

4 OR 2 OHM UP TO 475 W/RMS
Depending on the built-in subwoofer, you can choose between a 4 or 2 ohm version, otherwise the modules are identical. With a fat 460 W/RMS for the 4 ohm model and 475 W/RMS for the 2 ohm model, even very power-hungry subs can be fired up - and with an impressively high efficiency of up to 84%. Such modules can only be achieved with advanced Class D technology, conventional Class A/B amplifiers are not recommended at all, as they consume much more power at high power and therefore overheat quickly and require much larger cable cross-sections. Ingenious - via a hidden 3-way limiter switch, even smaller subwoofers can be optimally supplied and protected from excessive power. Both modules fit into all passive housings from ESX, Musway and HiFonics with Quick Connect terminals in exchange. Installation and connection is extremely easy!

WITH EPS PRO
Especially the connection to modern car audio systems is often a big challenge. Thanks to advanced EPS PRO technology, it is possible to simulate three different input resistances, with which the high-level inputs can be perfectly adapted to the radio in the vehicle without triggering an error diagnosis in the vehicle. On top of that, the input sensitivity can easily be switched from 15 to 40 volts, which enables even better integration.

ESX POWER4 technical details:

• 1x 460 watts RMS 4 ohms

• Efficient Class D mono amplifiers

• Efficiency up to 84%

• Low pass 40-120 Hz with 12 dB edge steepness

• EPS Pro with 10R / 150R / 600R (switchable)

• Phase switch 0°/180°, bass boost 0-6 dB @ 45 Hz

• RCA low level input or high level input

• Automatic switch-on function (DC or Signal)

• Start-stop capable, 5 sec./ up to 7V

• Input sensitivity 15 or 40 volts (switchable)

• Triple limiter function, clipping LED

• Bass level wired remote control

• with no woodwork to fit enclosures with Quick Connect terminals

•  Dimensions: 113 x 130 x 125 mm • Mounting hole: 85 x 109 mm