User manual JBL SYN-PROJECT ARRAY

[. . . ] JBL Synthesis Four speaker systems feature the following: ® controller and amplifiers, your speaker system will deliver a state-of-the-art THX home theater experience to your living room. You will hear in your home exactly what the director and sound engineer heard in the recording studio. The system will reproduce the audio flawlessly and without distortion. ® THX ULTRA2 -LICENSED HOME AUDIO SYSTEM: When used with a THX ™ ™ FLUSH-MOUNT APPEARANCE: The S4Ai, S4VC and S4HC are designed to fit flush to your wall surface. Designers and interior decorators will be pleased by their hidden appearance and stunning performance. PURE-TITANIUM, HIGH-FREQUENCY TRANSDUCER DOME: The pure-titanium diaphragms with neodymium magnet structures are ultralight to accurately reproduce lightning-fast sounds – such as cymbal crashes – yet extremely rigid to eliminate distortion and ear fatigue. Professional LSR studio monitors, this unique structure enables Synthesis Four Series speakers to evenly disperse high frequencies, creating precise imaging over a wide listening area. ™ ® ELLIPTICAL OBLATE SPHEROIDAL (EOS) WAVEGUIDE: First developed for our JBL PURE-TITANIUM, INVERTED-DOME, MIDRANGE TRANSDUCERS (S4VC, S4HC): The midrange drivers seamlessly complement the titanium-dome tweeter and offer nearly perfect pistonic motion, which eliminates the uncontrollable flexing found in conventional cones. [. . . ] The best performance can be obtained by installing four S4Ai speakers in a 7-channel system and wiring them in Single-Drive mode; that is one amplifier channel per S4Ai speaker. That is, when positive voltage is applied to the cone, the cone will move outward. 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. Attach the included L-brackets to the speakers (see Figure 14), and attach them to the mounting flanges at the appropriate recessed distance. The S4VC and S4HC require a minimum 6" wall depth. The S4Ai requires a minimum 4" wall depth (see Figures 15, 16 and 17). Figure 15. Mounting the S4VC speaker using the S4PCB kit Figure 16. Mounting the S4HC speaker using the S4PCB kit Figure 17. Mounting the S4Ai speaker using the S4PCB kit 11 S4VC/HC/Ai OM 8/19/08 3:26 PM Page 12 MOUNTING THE SPEAKERS REQUIREMENTS FOR MOUNTING OPTION 2 – RETROFIT/PREEXISTING CONSTRUCTION: Use the S4RFB bracket. Mount the S4RFB to the wall surface and secure it to studs behind the wall. Attach the speaker via mounting flanges to the appropriate recessed distance. The S4VC and S4HC require a minimum 6" wall depth. The S4Ai requires a minimum 4" wall depth (see Figures 18, 19 and 20). Figure 18. Mounting the S4VC speaker using the S4RFB kit Figure 19. Mounting the S4HC speaker using the S4RFB kit Figure 20. [. . . ] • In Dolby® Digital or DTS® mode, make sure that the receiver/processor is configured so that the speaker in question is enabled. • In Dolby Pro Logic® mode, make sure the center speaker is not in Phantom mode. • To diagnose the likely source of the problem, it is often helpful to switch the nonfunctioning speaker with one that is functioning correctly. Turn off all electronics before exchanging the speakers. [. . . ]