User manual BOSE 791 SPEAKERS

[. . . ] VIRTUALLY INVISIBLE 791 SPEAKERS ® Installation Guide Installationsvejledning Installationsanleitung Guía de instalación Asennusopas Notice d'installation Telepítési útmutató Guida di installazione Gebruikershandleiding Podrcznik instalacji Installationsanvisning TAB 8 TAB 7 TAB 6 TAB 5 TAB 4 TAB 3 TAB 2 English SAFETY INFORMATION Important words of caution Please read this owner's guide completely before you start. Then carefully consider your experience using the tools and taking the precautions referred to here. If you have doubts about doing this installation, you should contact either the dealer you purchased the product from, an electrician, or a professional audio/video installer. You can describe the job and request a cost estimate before committing to installation service. [. . . ] CAUTION: Be sure not to press on the two small drivers seated on the face of the speaker. Security flange Positive (+) wire to positive (red) terminal CAUTION: Be careful not to damage or remove any of the foam gasket material along the edge of the speaker. This gasket is important to the operation of the speaker. 8 English TAB 2 TAB 3 TAB 4 TAB 5 TAB 6 TAB 7 TAB 8 INSTALLATION IMPORTANT CONSIDERATIONS: You can use a square-head or phillips-head screwdriver to tighten the screws on the speaker clamps. These clamps exert pressure inside the ceiling to hold the speaker firmly in place. If you choose to use a screw gun or power drill with a square-head or phillips-head bit: · Select the lowest torque setting to begin. · If the screw does not seat properly, use the next highest torque setting to finish securing the screw. Tighten one of the four clamp screws until you can feel the frame press firmly against the ceiling. This indicates that the clamp is extended and is gripping the ceiling. One of four clamp screws Clamp CAUTION: Tighten these screws firmly, but avoid using so much pressure that the clamps compress the ceiling material. This can cause the material to crumble, creating an uneven surface with gaps between the speaker face and the ceiling. Locate the clamp screw opposite the one that is tightened and repeat the process with this clamp. These two tightened clamps will hold the speaker in place temporarily. Repeat the process with the other two clamps to firmly secure the speaker to the ceiling. 9 TAB 8 INSTALLATION TAB 7 TAB 6 TAB 5 TAB 4 TAB 3 TAB 2 English Testing each speaker With the speakers secured to your ceiling, you can make sure the speaker functions properly before you attach the grille. CAUTION: Before you turn on your receiver/amplifier, be sure there is no unused speaker cable connected to it. An attached cable that is free at one end can cause a short and damage your receiver/amplifier. Turn on the receiver/amplifier and play a piece of music that is familiar to you. Note: To remove the speaker and check the connections, loosen two of the screws that are opposite each other first. Continue to support the speaker and carefully loosen the final screw. Attaching the grille The grille is designed to fit into the slots on the rim of the speaker and lock into place with a slight clockwise twist. Position these snaps below the six slots along the rim of the speaker. Snap 3. On the rim of the speaker, notice the six slots that the snaps fit into. Slot 4. Press the grille onto the rim of the speaker until you feel the snaps engage and twist the grille slightly to lock the snaps securely. Bose® logo Note: If you find it difficult to twist the grille, use rubber gloves or place a piece of non-slip material over the grille to improve your grip. Rotate the Bose logo, as needed, to adjust it for your room layout. 10 English TAB 2 TAB 3 TAB 4 TAB 5 TAB 6 TAB 7 TAB 8 REFERENCE Painting the exterior parts You can paint the grille and frame of your Virtually Invisible® 791 speakers before you install them. Be sure to use paint that is appropriate to the technique you choose, as described below. Painting is optional and Bose cannot be responsible for the quality of adhesion or finish of non-factory-applied paints. [. . . ] · Replace and re-run the speaker wire only after you have followed the procedure above and find no other source of the problem. · Check for gaps between the speaker frame and the ceiling surface. · Trace the cord from the speaker in question to the receiver/amplifier and switch the wires connected to the + and ­ terminals at that end. ­ If this strengthens the bass performance, the problem was caused by inconsistent polarity of the connections made at either end of the cable. [. . . ]