User manual JBL JBL940

[. . . ] Left/right rear channels are for a 7-channel system. The center rear channel is for a 6-channel system. Left Channel Right Channel Left Front Channel Right Rear Channel Listening Position Figure 1. Experiment with speaker placement to obtain the best bass level and stereo imaging in your room. Left Surround Channel Left Rear Channel Center Rear Channel HOME THEATER For front-channel use, place one speaker on the left and another on the right, along either side of the television monitor. Since the speakers are magnetically shielded, you can place them near the TV without worrying about the field distorting the TV picture. [. . . ] This figure shows an alternate layout, which may be more suitable for some rooms. Left/right rear channels are for a 7-channel system. The center rear channel is for a 6-channel system. 2 INSTALLING FEET ES10, JBL940, ES30 The supplied self-adhesive rubber feet may be attached to the bottom corners of your speakers to protect your furniture. INSTALLING SPIKED FEET ES80, ES90, ES100 Four metal spikes are supplied for use when using the outboard feet and the speaker is to be placed on a carpeted surface, to decouple the speaker from the floor and prevent unwanted damping. To insert the spikes, gently lay the speaker on its side (not its front or back) on a soft, nonabrasive surface. Each spike screws into the threaded insert in each outer foot. Make sure all four spikes are screwed in completely for stability. NEVER drag the speaker to move it, as this will damage the spikes, the feet and/or the wood cabinet itself. ALWAYS lift the speaker and carry it to its new location. Place pads here Place pads here WALL-MOUNTING ES10 The ES10 may be wall-mounted. The customer is responsible for proper selection and use of mounting hardware (available through hardware stores), to properly and safely wall-mount the speakers. THESE PRODUCTS ARE NOT INTENDED FOR CEILING MOUNTING. CHANGING THE FEET ES80, ES90, ES100 The ES80, ES90 and ES100 feature attractive outboard feet, installed at the factory. However, if you would like to replace them with the less visible inboard feet (included), follow the instructions below. NOTE: If desired, consult your local JBL dealer about speaker wire and connection options. The speakers have coded terminals that accept a variety of wire connectors. The most common connection is shown in Figure 4. To ensure proper polarity, connect each + terminal on the back of the amplifier or receiver to the respective + (red) terminal on each speaker, as shown in Figure 5. Connect the ­ (black) terminals in a similar way. See the owner's guides that were included with your amplifier, receiver and television to confirm connection procedures. SINGLE-STEREO AMPLIFIER Figure 7. DUAL-STEREO AMPLIFIER Speaker Wire Figure 4. This figure shows how to connect bare wires to the terminals. Figure 8. IMPORTANT: Do not reverse polarities (i. e. , + to ­ or ­ to +) when making connections. Doing so will cause poor imaging and diminished bass response. FINAL ADJUSTMENTS Check the speakers for playback, first by setting the system volume control to a minimum level, and then by applying power to your audio system. Play a favorite music or video segment and increase the system volume control to a comfortable level. NOTE: You should hear balanced audio reproduction across the entire frequency spectrum. [. . . ] Listen to a variety of music selections and note the bass level. If there is too much bass, move the speakers away from nearby walls. Conversely, if you place the speakers closer to the walls, there will be more bass output. STANDARD CONNECTION Standard Connection Figure 5. Wiring diagram shows polarity connections for one channel of a stereo or home theater system. CARE OF YOUR SPEAKER SYSTEM Each JBL ES Series enclosure has a finish that does not require any routine maintenance. [. . . ]