JBL PSW1000 (01) PDF Document

CAUTION: To prevent electric shock, do not remove the grounding plug on the power cord, or use any plug or extension cord that does not have a grounding plug provided. Make certain that the AC outlet is properly grounded. Do not use an adapter plug with this product.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

USE THE CORRECT AC VOLTAGE: Connecting the unit to an outlet supplying a higher voltage may create a fire hazard.

HANDLE THE POWER CORD: Do not disconnect the plug from the AC outlet by pulling the cord; always pull the plug itself. Pulling the cord may damage it. If you do not intend to use your unit for any considerable length of time, disconnect the plug from the AC outlet. Do not place furniture or other heavy objects on the cord, and try to avoid dropping heavy objects upon it. Also, do not make a knot in the power cord as it can cause a short circuit with a consequent fire hazard.

MOVING THE UNIT: Before moving the unit, be sure to pull out the power cord from the AC outlet and disconnect the interconnection cords with other units.

DO NOT OPEN THE CABINET: To prevent shock hazard, do not tamper with internal components for inspection or maintenance. JBL does not guarantee against performance degradation resulting from any modification. If water, a hairpin, or wire, accidentally enters the unit, immediately extract the plug from the AC outlet to prevent shock and consult an authorized JBL service station. If you use the unit under this condition, it may cause a fire or shock hazard.

Place the unit on a firm and level surface. Avoid installing your unit under the following conditions:

• Moist or humid places.

• Places exposed to direct sunlight or close to heating equipment.

• Extremely cold locations.

• Places subject to excessive vibration or dust.

• Poorly ventilated places.

Do not obstruct the ventilation slots on the amplifier by placing objects over them, otherwise, the temperature inside the unit may rise, possibly affecting its long-term reliability.

Since the low frequencies produced by your JBL PSW1000 are non-directional, the placement of your subwoofer is not critical. You may place it under an end table, next to the wall, next to a T.V., anywhere you would like. However, the closer the subwoofer is to walls, the more bass will be realized. Corner placement will result in maximum bass output.

CAUTION: Do not place your JBL PSW1000 next to heaters, furnaces, or any other heat sources. Be sure not to pinch or compress the power cord.

If the unit gets dirty, wipe it with a soft, dry cloth. If necessary, wipe it with a soft cloth dampened with mild soapy water and then with a dry cloth. Never use benzene, thinner, alcohol or other volatile agents, and avoid spraying an insecticide near the unit.

CAUTION: Before making any connections to your subwoofer, make sure the power to your entire system is OFF.

AC POWER: First make sure the Volume Control on the rear panel of your JBL PSW1000 is in the minimum position. Make all connections, then plug the AC cord into a wall socket.

Your JBL PSW1000 has both line-level and speaker-level input connections. Review your receiver/T.V./source amplifier instruction manual to see which outputs your equipment provides, then follow the appropriate instructions.

Use the RCA (phono) input jacks labeled “Line Input” when connecting from a line-level device, such as a pre-amp, crossover, signal processor, or when using any of the line-level outputs on the rear of your receiver/T.V./source amplifier.

If your receiver has a single RCA output for sending the signal to the subwoofer, connect it to both R & L input jacks by using a “Y” adapter (not included).

Many stereo/large screen T.V.s have stereo (R & L) RCA jacks for sending the signal to external audio equipment. Your subwoofer connects to these using both the R & L input jacks.

Use these inputs when connecting to the speaker out (speaker mains) of your receiver/T.V./source amplifier. Run speaker wires from the speaker output terminals (usually coded red and black) on the rear of your receiver/T.V./source amplifier to the red and black input terminals labeled “Speaker Level Input (from amplifier)” on the JBL PSW1000.

To ensure correct phasing, connect the red terminal on the receiver/T.V./source amplifier to the red or (+) loudspeaker connection terminal on the JBL PSW1000, and the black to the black or (-). Connecting the PSW subwoofer this way ensures that both channels will be in phase; that is, working together, not in opposition.

CAUTION: Never attach inputs to both line level and speaker level inputs of the same channel at the same time.

We recommend #16 AWG two-conductor insulated wire as a minimum size. If your JBL PSW1000 is more than 30 feet (10 m) from your source amplifier, use larger diameter wire.

1. First measure the distance from your receiver/T.V./source amplifier to your JBL PSW1000.

2. Next make two hookup wires this length.

3. Strip off 3/8″ of insulation from both ends of each conductor wire.

4. Twist each set of thin wires into a tightly-bunched spiral.

5. Now find a visual difference between the two conductors of each molded pair of speaker wire. These differences can be a different color wire (copper or “silver”); a strand of yarn in one conductor; thin, raised ribs on one part of the outer insulation; or a printed “+” marking on one of the insulators.

Your JBL PSW1000 has a speaker output terminal block to enable the signal to be sent to your main speakers or satellites. To use the “Speaker Level Output (to external speakers)”, hook up the external speakers using two-conductor insulated wire following the same procedure described under Speaker Level Input. Connect the red (+) terminal of the JBL PSW1000 to the red (+) terminal of the external speaker, and the black (-) to black. Connecting the external speakers this way ensures that they will be in phase. Connecting the speakers out of phase won’t damage them, but will result in less bass and poor imaging.

NOTE: Connecting your satellite speakers through your JBL PSW1000 won’t change their impedance.

NOTE: When first setting up your JBL PSW1000, set the Volume control counter-clockwise to “Min” (minimum) before plugging in the power cord.

Use the “Volume” knob to add the appropriate amount of bass to your main speaker output. Increase the subwoofer level by turning the volume knob clockwise until you find a setting that is pleasing to you.

Use the crossover frequency knob to adjust the upper end of the subwoofer’s frequency response. The crossover control determines the highest frequency your subwoofer will reproduce. It allows a seamless transition from subwoofer to satellite speakers. When using small satellite speakers (without much low end), you want the crossover frequency more toward the upper end (150 Hz) to fill in the sound your satellites can’t reproduce. When using larger main speakers, a setting more towards the 90 Hz end gives a smoother transition from your JBL PSW1000 to your main speakers. Experiment until you find a setting that meets your satisfaction.

Use the POLARITY switch to maintain proper acoustic summation with the main speakers. Listen to your JBL PSW1000 and main speakers with the switch on “0°”, then listen to the same material with the switch on “180°”. Decide which way sounds better and leave the switch in this position. You should repeat this procedure if you move your JBL PSW1000 to another part of the room.

Your JBL PSW series amplifier has a built-in Automatic Level Control circuitry that comes on automatically when subjected to high input signal levels. It helps to protect the subwoofer driver from being damaged by accidental misuse, assuring you of many years of excellent performance.

Before seeking service for your JBL PSW1000, please recheck all connections as outlined in this manual. Verify that your AC wall power source is working properly by checking with another appliance.

Your JBL PSW subwoofers should only be serviced by an authorized JBL repair station. Woofers are replaceable by the repair station only. Do not remove the amplifier from the cabinet. There are no user-serviceable parts inside.

* ALC circuit defeated.
** Determined by crossover setting.