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This revolutionary subwoofer utilizes state-of-the-art components, a non-resonant monocoque cabinet and low diffraction construction in order to achieve the most lifelike sound possible in your listening room for many years to come. The ProSub is a compact, high quality powered speaker system intended primarily for use as a subwoofer in superior quality music or home theater systems. This ProSub powered subwoofer incorporates a high current power amplifier, electronic crossover and precise equalization in order to achieve the highest possible level of low frequency performance. The amplifier and electronic crossover are completely self-contained modules which are housed in the subwoofer. The ProSubs incorporate Definitive’s proprietary PowerField® technology, by which the amplifier is specifically engineered in conjunction with the driver for optimum load matching and power transfer characteristics. The integrated electronic crossover incorporates high level inputs and outputs as well as a low level input, precise equalization, continuously variable low pass filter (between 40 and 150 Hz), fixed speaker level high pass filter (to match the ProMonitors) and a precision volume control. The tremendous built-in flexibility allows easy, seamless integration with all main speaker systems and optimum performance in any room. The crossover incorporates circuitry which allows for exceptional performance as either a single subwoofer or when two subwoofers are used. Our engineers have spent many years in developing this product. To ensure that you only experience the finest performance possible from your subwoofer, we encourage you to take a moment with this owner’s manual and familiarize yourself with the proper installation and setup procedures for your subwoofer. Safety Precautions Safety Precautions CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION! To reduce the risk of electric shock and fire, do not remove the cover or back plate of this device. There are no user serviceable parts inside. Please refer all servicing to licensed service technicians. Avis: Risque de choc electricque, ne pas ouvrir. CAUTION! The international symbol of a lightning bolt inside a triangle is intended to alert the user to uninsulated “dangerous voltage” within the device’s enclosure. The international symbol of an exclamation point inside a triangle is intended to alert the user to the presence of important operating, maintenance and servicing information in the manual accompanying the device. CAUTION! To prevent electrical shock, match wide blade of plug to wide slot, fully insert. Attention: Pour eviter les chocs electriques, introduire la lame la plus large de la fiche dans la borne correspondante de la prise et pousser jusqu'au fond. CAUTION! To reduce the risk of electrical shock, do not expose this equipment to rain or moisture. 1. Read Instructions—All safety and operating instructions should be read before operating the device. 2. Retain Instructions—The safety and operating instructions should be retained for future reference. 3. Heed Warnings—All warnings on the device and in the operating instructions should be adhered to. 4. Follow Instructions—All operating and safety instructions should be followed. 5. Water & Moisture—The device should never be used in, on or near water for risk of fatal shock. 6. Carts & Stands—The device should only be used on carts or stands recommended by the manufacturer. 7. Wall & Ceiling Mounting—The device should be mounted on a wall or ceiling only as recommended by the manufacturer. 8. Ventilation—The device should always be located in such a way that it maintains proper ventilation. It should never be placed in a built-in installation or anywhere that may impede the flow of air through its heat sink. 9. Heat—Never locate the device near heat sources such as radiators, floor registers, stoves or other heat-generating devices. 10. Power Supply—The device should only be connected to a power supply of the type described in the operating instructions or as marked on the device. 11. Power Cord Protection—Power cables should be routed so they are not likely to be stepped on or crushed by items placed on them or against them. Special attention should be paid to areas where the plug enters a socket or fused strip and where the cord exits the device. 12. Cleaning—The device should be cleaned in accordance with manufacturer’s instructions. 13. Periods Of Non-Use—The device should be unplugged when not being used for extended periods. 14. Dangerous Entry—Care should be taken that no foreign objects or liquids fall or are spilled inside the device. 15. Damage Requiring Service—The device should be serviced by licensed technicians when: • The plug or power supply cord has been damaged. • Objects have fallen or liquid has spilled inside the device. • The device has been exposed to moisture. • The device does not appear to be operating properly or exhibits a marked change in performance. • The device has be...