User manual JBL SYN4-L7

[. . . ] S4VC/HC/Ai OM 8/19/08 3:26 PM Page 1 SYNTHESIS FOUR ® S4VC, S4HC & S4Ai FLUSH-MOUNT LOUDSPEAKERS OWNER’S AND INSTALLER’S MANUAL S4VC/HC/Ai OM 8/19/08 3:26 PM Page 2 CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INCLUDED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPEAKER PLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 LEFT AND RIGHT SPEAKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 CENTER CHANNEL SPEAKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 AMBIENT SURROUND SPEAKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5. 1-CHANNEL SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6. 1-CHANNEL SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7. 1-CHANNEL SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 S4Ai MODES OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 S4Ai WIRING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 WHICH DIFFUSE MODE IS THE RIGHT ONE FOR THE JOB?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 PREPARING THE S4Ai FOR THE CORRECT OPERATIONAL MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 S4Ai ORIENTATION – VERTICAL OR HORIZONTAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 S4Ai DUAL-DRIVE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 MOUNTING THE SPEAKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 SPEAKER-MOUNTING OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 REQUIREMENTS FOR MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 CONNECTING THE SPEAKERS TO THE REST OF YOUR SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 PREPARING THE HOOKUP WIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 S4VC/HC/Ai OM 8/19/08 3:26 PM Page 3 INTRODUCTION Thank you for purchasing JBL Synthesis Four flush-mount home theater loudspeakers. These products represent the synthesis of everything that JBL, Inc. , has learned about the emotional power of audio and video in more than sixty years of preeminence in the field. They set new benchmarks in the use of “high technology” and provide you with the experience of being in the world’s greatest movie houses and concert halls – right at home! [. . . ] Usually, when the Dipole mode is used in a 5. 1 system, the positive phase array should fire toward the front of the room. The array facing the rear of the room will have a negative orientation. That is, when positive voltage is applied to the cone, it will move inward, in the opposite direction of the other array on the speaker. As shipped from the factory, the S4Ai is set up for placement in the right-side wall in a 5. 1-channel system. The speaker that will be placed in the left-side wall should have its Phase switch pushed in so that the positive phase array will be firing toward the front of the room when installed (see Figure 10). 8 S4VC/HC/Ai OM 8/19/08 3:26 PM Page 9 SPEAKER PLACEMENT In a 7. 1-channel system, where two additional S4Ai speakers may be mounted in the rear wall, the positive phase arrays should both fire toward the center of the rear wall, as shown in Figure 11. Thus, the speaker on the left (from the perspective of somone seated in the listening position and facing the front) should be configured with its phase switch in the OUT position (as shipped), and the speaker on the right should be configured with its phase switch in the IN position. See the table on the right side. L L C R C R + SIDE LEFT SIDE RIGHT + + SIDE LEFT SIDE RIGHT + FLOOR PLAN FLOOR PLAN REAR LEFT REAR RIGHT + + Figure 10. 7. 1 System To change the operational mode between Bipole and Dipole, move the switch to the Dipole-mode position (see Figure 12). The switch can be accessed from the back of the speaker, or from the front by removing the upper half of the baffle. Phase Switch Setting in Dipole Mode 5. 1 System 7. 1 System Side Left IN IN Side Right OUT OUT Rear Left N/A OUT Rear Right N/A IN BIPOLE BIPOLE DIPOLE DIPOLE DIPOLE DIPOLE BIPOLE BIPOLE Figure 12. Switch for Dipole/Bipole mode NOTE: For Bipole mode, the phase switch must be OUT or the S4Ai will not work properly. S4Ai ORIENTATION – VERTICAL OR HORIZONTAL The S4Ai’s top baffle or “diffuse array” may be rotated 90 degrees clockwise so that the speakers can be placed in either vertical or horizontal orientation and still be able to produce the correct dispersion pattern. This may be necessary, for example, if the S4Ai is being installed in a ceiling and the joists are running from front to back in the room. In that situation, conventional in-wall side channels would be firing side to side rather than front to back. To correct this and produce the correct pattern, remove the eight retaining screws from the “diffuse array” and rotate 90 degrees so the dispersion pattern is correct in relation to the room and the other surround speakers in the system. If changing from the vertical to horizontal configuration, rotate the array clockwise. If changing from the horizontal to vertical configuration, rotate the array counterclockwise (see Figure 13). In both cases, take care not to damage the wiring, which will remain connected to either the Dipole or Bipole connector, as discussed above (see Figure 12). 9 S4VC/HC/Ai OM 8/19/08 3:26 PM Page 10 SPEAKER PLACEMENT S4Ai DUAL-DRIVE MODE As the S4Ai has the capability of producing both side and rear fields from a single location in Bipole mode while dual-driven for cinema playback (see S4Ai Wiring Guide on page 7), some care must be taken when using the Direct Radiating mode with the autoswitching trigger for music playback. ROTATE ARRAY CW Figure 13. Rotate top baffle for vertical or horizontal orientation Use Speaker Input #1 (see Figure 8) for the side field so that the direct-radiating tweeter for both speakers plays the correct information generated by the decoder. This can be accomplished by rotating the “diffuse array” 180 degrees from default so that the speakers mirror each other in the installation. See Figure 13, which shows how to rotate the array, but note that for Dual-Drive mode you will need to rotate the array an additional 90 degrees from the position shown for a final position, in which the tweeter-midrange array that started out on top ends up on the bottom (and thus with the tweeter facing to the right rather than the left). MOUNTING THE SPEAKERS SPEAKER-MOUNTING OPTIONS The S4VC, S4HC and S4Ai models all use the same mounting bracket. There are two models to choose from, based on the type of installation. In the case of new construction, choose the S4PCB preconstruction bracket. The speakers will fit into standard-construction 2" x 6" walls with 16" on-center studs. [. . . ] Now find a visual difference between the two conductors of each molded pair of speaker wires. Differentiating marks 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 part of the outer insulation. It doesn’t matter which of the two strands go to the (+) and (–) on the speakers and amplifiers, as long as all speakers are connected identically. Push down on the binding post, insert the wire into the hole, and release. 13 S4VC/HC/Ai OM 8/19/08 3:26 PM Page 14 TROUBLESHOOTING SYMPTOM No sound coming from speaker PROBABLE CAUSE • Amplifier is not turned on • Amplifier gain is low • Correct source is not selected or turned on • Defective patch cords to amplifier • Speaker wires are not connected to amplifier • Balance control is set improperly • Speaker wires are damaged or shorted • Speaker is not configured correctly SOLUTION • Turn on amplifier. [. . . ]