ProSub 800/1000
PowerField® Subwoofer with
Active Crossover & Power Amplifier
Owner’s Manual
Congratulations
Congratulations on your purchase of a Definitive Technology ProSub Subwoofer. 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
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 been dropped or the cabinet becomes damaged.
16.Service—The device should always be serviced by licensed technicians. Only replacement parts specified by the manufacturer should be used. The use of unauthorized substitutions may result in fire, shock, or other hazards.
2
Subwoofer Installation
Your new ProSub Subwoofer contains a built-in amplifier and sophisticated electronic crossover. There are several ways to install your subwoofer.
One setup is not considered “better” than another; rather, each is a function of what type of entertainment system you own and how you plan to integrate your components. Read the installation suggestions below to determine which options best suit your needs. Please take care to perform all wiring procedures with your system
completely powered down.
Unpacking
Each loudspeaker leaves our plant in perfect condition. Any visible or concealed damage most likely occurred in handling after it left our plant, and should be reported at once to your Definitive dealer or the delivery company that delivered your loudspeaker. Please unpack your system carefully. Save all cartons and packing material in case you move or need to ship your system. Record the serial number found on the back of the subwoofer in the appropriate place on your warranty card.
Inputs/Outputs
Your Definitive Technology ProSub subwoofer operates from either high level (speaker-type) or low level (RCA-type) outputs on your electronics. Use the low level jack when connecting the subwoofer to the LFE output jacks of a receiver, a preamp or a signal processor. Use the high level speaker terminal inputs to connect the subwoofer to the amplifier output (speaker) jacks of your receiver or amplifier. Use the high level output jacks to connect the subwoofer to a pair of left and right main speakers. (See wiring diagrams.)
When connecting the subwoofer to your system, it is recommended that you use high quality speaker cable and try to maintain cable runs of the same length for the left and right channels. Should you perchance experience any level of ground hum or noise, try plugging the subwoofer into the same circuit as your amplifier. Also, consult the “Troubleshooting” section of this manual. To prevent accidental damage to your subwoofer from overdriving the system, the subwoofer features an internal overload protection circuit.
3
Subwoofer Placement
Your Definitive Technology subwoofer has been designed to operate at frequencies generally below 150 Hz. Because low-frequency information in this range essentially is non-directional, your subwoofer can be located anywhere in your listening room that is most convenient. Also, the continuously variable low pass filter operates at a very fast roll-off, ensuring great performance wherever you place your subwoofer. There are, however, some general rules that you should bear in mind when locating your subwoofer:
1.For maximum output the subwoofer should be placed in a corner or against the wall.
2.Corner placement will increase the subwoofer’s efficiency, which in turn will increase your system’s maximum output and improve the dynamic capability of the subwoofer.
3.While one Definitive Technology subwoofer will always sound great, the use of two subwoofers will definitely enhance your system’s performance by providing a smoother and more consistent response pattern. Here, it is recommended that you locate the subwoofers on the same side of the room as the main speaker of the same channel (if you are feeding them discrete left and right channel signals).
4.When using the ProSub with Definitive ProMonitors, consult the ProMonitor instruction manual for other placement tips.
Wiring Diagrams
Low Level LFE Connections
Most new model receivers, preamps and decoders feature a mono (line level) output intended to be used with subwoofers. This is the simplest connection method to use. You can feed the mono or LFE subwoofer output of your receiver or decoder to the LFE low level input on the subwoofer and achieve full performance. Usually, if your receiver or decoder already has a built-in low pass crossover, you should turn the low pass control on your ProSub to 150. Also, these subwoofer outputs tend to have less gain than main line level outputs, thus the gain control on your subwoofer may need to be adjusted accordingly for proper balance. Use the LFE input on the subwoofer to hook the subwoofer up to the LFE (low frequency effects) output on Dolby Digital AC-3* decoders, receivers, etc.
4
Loading...