Definitive Technology 60 owner manual Operating Controls, Powering Up Your Subwoofer, Gain Control

Operating Controls

Your Definitive Technology ProSub 60 subwoofer is equipped with a full complement of operating controls to ensure complete flexibility and maximum performance in any installation. Most of them basically are the “set and for- get” type, although occasionally certain controls will require minor adjust- ments.

Gain Control

On the back panel of your subwoofer is a gain (volume) control. This control is used to raise or lower the output level of your subwoofer in relation to the other speakers in your system.

Low Pass Filter

Your subwoofer’s back panel features a continuously variable low pass filter. This filter is continuously variable between 40 and 150 Hz. This low pass fil- ter control is used to obtain the optimum transition between the subwoofer and your main speakers. This control should be set by ear for best perfor- mance in your room. Set it to where it sounds best to you. If you are running

your main speakers full range, we would generally recommend setting the low pass filter fairly low (40-70 Hz). When using the ProSub 60 with

Definitive ProMonitors, please consult the instruction manual section “Using the ProSub 60 with Definitive ProMonitors.”

Powering Up Your Subwoofer

Your subwoofer contains a built-in, active powered subwoofer section as well as an electronic crossover and so each subwoofer must be plugged into an electrical socket of the appropriate voltage (as indicated on the back of your unit) using the plug on the end of the black cord attached to the electronics module on the back of the loudspeaker. The subwoofer has a special circuit which automatically turns the powered subwoofer section on when a signal is fed to the loudspeaker and does not require an on-off switch. The red LED on the back panel will light up when a signal is sensed and the amplifier turns on. It will automatically turn off a little while after the signal is discontinued.

The ProSub 60 has a special circuit which automatically turns the powered subwoofer section on when a signal is fed to the loudspeaker and does not require an on/off switch. We suggest plugging the ProSub 60 into a circuit which is on all the time and not into a switched outlet. When the ProSub 60 is plugged into a circuit and receives AC current, initially you will hear a rela- tively loud pop which is completely normal as the system first activates itself to stand-by mode. Then, when a program signal is fed to the speaker it will fully activate itself with a lower level pop which is normal. If you unplug the speaker or turn off the AC current going to it, it will reactivate itself with a pop when AC current is restored, which is normal.

Please note that after the cessation of a signal, it may take up to an hour for the amplifier to actually turn off from active to standby mode. In some instances, because of RF presence in your area, the red LEDs may not turn off. However, this is nothing to be concerned about as the amplifiers draw almost no power when they are idling.

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